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====== Using the ADP1051 Eighth Brick Power Module Reference Design ======
===== Features =====
**Standard eighth (1/8) brick size\\
High power density\\
Full digital control\\
Compatible with DOSA second 1/8 brick digital connector\\
PMBus communication\\
Graphical user interface (GUI) software supported\\
Delayed hiccup overcurrent protection (OCP), overtemperature protection (OTP), overvoltage protection (OVP), and undervoltage lockout (UVLO)\\
Input voltage range: 36 V to 75 V\\    
Output voltage: 12 V\\ 
Maximum output current: 20 A \\ 
Efficiency: typical 94.5% at full load**  \\
 
===== Applications=====
**48 V telecom dc to dc power supply\\
Servers\\
Telecommunications systems\\
**
===== General Description=====
The eighth (1/8) brick power module is designed based on the standardized 1/8 brick format defined by the Distributed-power Open Systems Alliance (DOSA). This reference design implements the ADP1051, a digital controller for isolated power supply with PMBus Interface, to control the energy conversion from input to output. Because of the excellent performance of the ADP1051, this 1/8 brick power module achieves high reliability, efficiency, and integration.

This 1/8 brick power module offers a series of housekeeping functions, such as IOUT_OC, VOUT_OV, OT, VOUT_UV defined by PMBus, input UVLO, reverse current protection, short-circuit protection, and so forth.
 

{{ :resources:a1_ug656.png?nolink&500 |Figure 1.}}\\
<WRAP centeralign>//Figure 1. Eighth Brick Power Module//</WRAP>

===== Power Module Specifications=====

**Table 1.**\\ 
^Parameter ^Symbol ^Min ^Typ ^Max ^Unit ^Test Conditions^
|Input Voltage|V<sub>IN</sub>|36|48|75|V dc|  |
|Turn On Input Voltage|V<sub>ION</sub>| |34| |V dc| |
|Turn Off Input Voltage|V<sub>IOFF</sub>| |32| | V dc|
|Output Voltage Initial Setting|V<sub>OI</sub>| |12| |V dc| V<sub>IN</sub> = 48 V and I<sub>O</sub> = 20 A|
|OVP| | |14| |V dc| |
|Output Voltage Ripple| | |120| |mV| |
|Load Current| I<sub>O</sub>| | |20|A| |
|Load Current Limit Threshold| | |22| |A| |
|Operation Temperature| | |25|85|ºC|Airflow = 200 LFM or higher|
|OT| | |114| |ºC| |
|Efficiency|η| |94.5| |%|V<sub>IN</sub> = 48 V and I<sub>O</sub> = 20 A|
|Switching Frequency|f<sub>SW</sub>| |223| |kHz| |
|External Capacitance| |330| |10,000|μF| |
\\


===== List of Terminals=====
{{ :resources:af2andaf3sidebyside.png?nolink&500 |}}
\\

**Table 2.** 

^Terminal^ Name^ Description^
|JP1|V<sub>IN</sub>+|Input terminal for input power.|
|JP3|V<sub>IN</sub>−|Ground for input power.|
|JP4|V<sub>OUT</sub>+|Positive terminal of output power.|
|JP8|V<sub>OUT</sub>−|Negative terminal of output power.|
|JP7|ON/OFF|Control pin of the 1/8 brick. Negative logic.|
|JP10.5|V<sub>OUT</sub>−|Negative sensing point. Connect to V<sub>OUT</sub>−.|
|JP10.6|NC|Not connected.|
|JP10.7|V<sub>SENS</sub>+| Positive sensing point.|
|JP10.9|NC|Not connected.|
|JP10.10|AGND|Ground for control circuit.|
|JP10.11|SDA|Data bus of the PMBus interface.|
|JP10.12|PG|Power-good signal pin. This pin (low level voltage) indicates that the unit is functioning abnormally. Open-drain ouput.|
|JP10.13|SCL|Clock bus of the PMBus interface.|
|JP10.14|10V_SEC|10 V auxiliary power on the output side.|
|JP10.15|ADD|Address selection pin. Follow the specification listed in the ADP1051 data sheet.|

===== Test Setup=====

==== Test Equipment====

The following equipment is required to complete the test procedure:
  * DC voltage source: an adjustable dc source that is capable of outputting 36 V dc to 75 V dc, with a minimum power rating of 300 W or greater.
  * DC multimeter: a four digits multimeter that is capable of handling an input voltage of 0 V dc to 80 V dc or higher.
  * Output load: a dc load that is capable of receiving 0 V dc to 16 V dc, 0 mA to 25 A, and 0 W to 300 W or greater.
  * Oscilloscope: 500 MHz full bandwidth is recommended.
  * Fan: 200 LFM forced air cooling.

==== Recommended Test Setup====
{{ :resources:a4_ug656_brickmodulesetup.png?nolink&850 |Figure 4.|}}\\
<WRAP centeralign>//Figure 4. Eighth Brick Power Module Recommended Setup//</WRAP>
\\
\\



{{ :resources:a5_ug656_top.jpg?nolink&500 |Figure 5. |}}\\
<WRAP centeralign>//Figure 5. Outlook of the Eighth Brick Power Module (Top View, Not to Size)//</WRAP>
\\
\\


{{ :resources:a6_ug656_bottom.jpg?nolink&500 |Figure 6. |}}\\
<WRAP centeralign>//Figure 6. Outlook of the Eighth Brick Power Module (Bottom View, Not to Size)//</WRAP>\\

==== Test Procedure====

Use the following steps to conduct the test procedure:
  - Power up the brick.
    - Connect the input terminals (JP1, JP3) to the input source and connect the output terminals (JP4, JP8) to the load.
    - Place the resistor between the ADD pin (JP10.15) and AGND (JP10.10). Select the resistance based on the specification of the ADP1051 (see the ADP5051 data sheet).
    - (Optional) Add a pull-up resistor (2.2 kΩ typical) between the PG pin (JP10.12) and an external dc source. The dc voltage of this dc source must not exceed 3.6 V.
    - (Optional) Connect the SDA pin (JP10.11), SCL pin (JP10.13), and the AGND pin (JP10.10) to the PMBus interface if communication from the PMBus interface to other PMBus devices is necessary.
    - Place an external aluminum capacitor of 330 μF (or greater) between the output terminals (JP4, JP8).
    - Connect the ON/OFF pin (JP7) to ground for input power (JP3).
    - Apply a dc voltage source (36 V dc ~ 75 V dc) between the input terminals (JP1, JP3).
  - Shut down the brick.
    - Shut down the input dc voltage source.
    - Shut down the load.
\\
===== Schematic, Bill of Materials, and PCB Layout=====

{{ :resources:a7_ug656_adp1051_eighthbrick_reva_sch.png?nolink&950|}}
<WRAP centeralign>//Figure 7. Schematic//</WRAP>

====Bill of Materials====

**Table 3. Bill of Materials**

^Quantity^Part Reference^Part No.^Value^Description^Manufacturer^Package^
|5 |C1, C2, C3, C4, C36 |12061Z475KAT2A|4.7 µF|4.7 µF/100 V X7S MLCC |AVX |C1206|
|1 |C5 |C0402C101J1GACTU|100 pF|100 pF/100 V COG MLCC |Kemet |C0402|
|1 |C6|GRM188R72A104KA35|100 nF|100 nF/100 V X7R MLCC|Murata|C0603|	
|6 |C7, C8, C9, C11, C46, C51|C1005X7R1C104KT|100 nF|100 nF/16 V X7R MLCC|TDK |C0402 |	
|6 |C10, C14, C15, C18, C29, C49|C1608X7R1C105KT|1 µF|1 µF/16 V X7R MLCC|TDK |C0603 |	
|1 |C12	|C1005C0G1H101JT|100 pF|100 pF/50 V COG MLCC|TDK|C0402|
|3 |C16, C20, C30 |C3216X7R1C106KT|10 µF|10 µF/16 V X7R MLCC|TDK|C1206|
|3 |C17, C19, C25|C3225X7R1C226K250AC|22 µF|22 µF/16V X7R MLCC|TDK|C1210|	
|2 |C21, C22|GRM15XR71C472KA86|4.7 nF|4.7 nF/16 V X7R MLCC|Murata|C0402|
|2 |C23, C24|C0603C333K1RACTU|33 nF|33 nF/100 V X7R MLCC|Kemet|C0603|
|1 |C26|C1005X7S0J225K050BC|2.2 µF|2.2 µF/6.3 V X7S MLCC|TDK|C0402	|
|1 |C27|C1005X7S0J474K050BB|470 nF|470 nF/6.3 V X7S MLCC|TDK|C0402	|
|1 |C28|NC|NC|MLCC|TDK|C0402|	
|1 |C32|GRM155R72A102KA01|1 nF|1 nF/100 V X7R MLCC|Murata|C0402|
|2 |C34, C35|GRM155R71H103KA88|10 nF|10 nF/50 V X7R MLCC|Murata|C0402|
|2|C43, C48|C1608X6S1C475K080AC|4.7 µF|4.7 µF/16V X6S MLCC|TDK|C0603|
|1|C47|GRM155R71A683KA01|68 nF|68 nF/10 V X7R MLCC|Murata|C0402|
|1|C50|GRM155R71H821KA01|820 pF|820 pF/50 V X7R MLCC|Murata|C0402|
|1|C52|202R18W102KV4E|1000 pF|1000 pF/2000 V X7R MLCC|Johanson Dielectrics, Inc.|C1206|
|1|C53|C1005X7R1H221KT|220 pF|220 pF/50 V X7R MLCC|TDK|C0402|	
|1|C54|GRM155R71H472KA01|2.2 nF|2.2 nF/50 V X7R MLCC|Murata|C0402|
|2|C59, C60|C1005X7R1H102KT|1 nF|1 nF/50 V X7R MLCC|TDK|C0402|	
|1|C117|GRM155R70J105KA12|1 µF|1 µF/6.3 V X7R MLCC|Murata|C0402|	
|4|D1, D2, D27, D28|BAS516|BAS516|100 V/0.25 A high speed diode|NXP|SOD523|	 
|1|D3|PMEG2010AEB|PMEG2010AEB|20 V/1 A ultralow VF MEGA Schottky diode|NXP|SOD523	|
|1|D18|BZX585-B5V1|BZX585-B5V1|5.1 V Zener diode, 2%	|NXP|SOD523|
|2|D21, D23|MUH1PB|MUH1PB|100 V/1 A ultrafast diode|Vishay|MicroSMP|	
|2|D25, D26|XBS053V15R	|XBS053V15R|30 V/0.5 A Schottky diode|TOREX|SOD523|	
|1|JP1	| |V<sub>IN</sub>+|Pin | | |
|1|JP3	| |V<sub>IN</sub>-|Pin | | |		
|1|JP4	| |V<sub>OUT</sub>+|Pin | | |			
|1|JP7	| |ON/OFF|Pin| | |			
|1|JP8	| |V<sub>OUT</sub>-|Pin| | |			
|1|JP9	| |SHORTPIN|Pin| | |			
|1|JP10	| |Pin Connector| | |	|			
|1|L1|SPM5030-R20M|0.20 µH|0.20 µH/21 A inductor|TDK|5.2 mm × 5.0 mm × 3 mm|
|2|L3, T6|PC95RM6|PC95RM6|Embeded inductor, total 10 mm height, 0.34 mm airgap|TDK| |		
|2|M1, M5|FDMS86350|FDMS86350|80 V/2.4 mR/80 A power MOSFET|Fairchild|Power 56|
|4|Q1, Q2, Q3, Q4|FDMS86150|FDMS86150|100 V/4.85 mR/60 A power MOSFET|Fairchild|Power 56	|
|1|Q5|PEMZ1|PEMZ1|50 V/0.1 A NPN/PNP general-purpose transistors|NXP|SOT666|
|2|Q7, Q8|Si2337DS|Si2337DS|80 V/0.27 R/2.2 A P-channel power MOSFET|Vishay|SOT-23|
|4|R2, R4, R6, R8|RC0402JR-0710KL|10 kΩ|10 kΩ 0402 SMD 5% generic resistor|Yageo|R0402|
|5|R15, R16, R52, R56, R64|RC0402JR-075K1L|5.1 kΩ|5.1 kΩ 0402 SMD 5% generic resistor|Yageo|R0402|
|2|R19, R20|RC0603JR-070RL|0 Ω|0 Ω 0603 SMD 5% generic resistor|Yageo|R0603|
|1|R21|CSNL1206FT1L00|0.001 Ω|1 mΩ 1206 SMD 1% current sensing resistor|Stackpole Electronics, Inc.|R1206|
|1|R23|RC0402JR-070R0L|0 Ω|0 Ω 0402 SMD generic resistor|Yageo|R0402|
|1|R24|RC0402FR-0711KL|11 kΩ|11 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R26|RC0402FR-0723K2L|23.2 kΩ|23.2 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|4|R27, R36, R39, R40|RC0402JR-0712K2L|2.2 kΩ|2.2 kΩ 0402 SMD 5% generic resistor|Yageo|R0402|
|2|R28, R31|PCF0402R4K99BT1|4.99 kΩ|4.99 kΩ 0402 SMD 0.1% ultraprecision resistor|Welwyn|R0402|
|1|R29|RC0402FR-0723K7L|23.7 kΩ|23.7 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R30|RC0402FR-071R3L	|1.3 Ω|1.3 Ω 0402 SMD 1% generic resistor|Yageo|R0402|
|2|R32, R33|RC0402FR-071KL|1 kΩ|1 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|2|R34, R80|RC0402JR-07680RL|680 Ω|680 Ω 0402 SMD 5% generic resistor|Yageo|R0402|
|1|R35|RE0402DRE0711KL|11 kΩ|11 kΩ 0402 SMD 0.5% generic resistor|Yageo|R0402|
|1|R37|RE0402DRE071KL|1 kΩ|1 kΩ 0402 SMD 0.5% generic resistor|Yageo|R0402|
|3|R38, R47, R55|RC0402JR-071KL|1 kΩ|1 kΩ 0402 SMD 5% generic resistor|Yageo|R0402|
|1|R42|PCF0402R10K0BT1	|10 kΩ| 10 kΩ 0402 SMD 0.1% ultraprecision resistor|Welwyn|R0402|
|1|R43|RC0402FR-0716K5L|16.5 kΩ|16.5 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R46|RC0402FR-078220KL|220 kΩ|220 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R49|RC0402FR-0710KL	|10 kΩ|10 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|3|R50, R54, R84,|RC0402FR-07149K9L|49.9 kΩ|49.9 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R51|RC0402FR-078K2L	|8.2 kΩ|8.2 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R53|RC0402FR-075K1L	|5.1 kΩ|5.1 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|2|R78, R81|RC0402FR-07374KL|374 kΩ|374 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R79|RC0402FR-0715KL|15 kΩ|15 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R82|RC0402FR-074K64L|4.64 kΩ|4.64 kΩ0402 SMD 1% generic resistor|Yageo|R0402|
|1|R83|RC0402FR-072K49L|2.49 kΩ|2.49 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R85|RC0402FR-0751RL	|51 Ω|51 Ω 0402 SMD 1% generic resistor|Yageo|R0402|
|1|R86|RC0402FR-071K5L|1.5 kΩ|1.5 kΩ 0402 SMD 1% generic resistor|Yageo|R0402|
|1|RT1|NCP15WF104F03RC	|100 kΩ|100 kΩ 0402 SMD NTC resistor|Murata|R0402|
|1|T1|MA5401-AE|MA5401-AE|Flyback/buck transformer, 1:1|Coilcraft|SMT |	
|1|T4|CU8965-AL|CU8965-AL|1:100 20 A CT, 1500VDC insulation voltage|Coilcraft|SMT	|
|2|U1, U4|UCC27211DRM|UCC27211|120 V/4 A high-side and low-side gate driver|Texas Instruments|SON-8|
|1|U2|ADuM3210TRZ|ADuM3210|Dual-channel digital isolator, 2 inputs|Analog Devices, Inc.|SOIC_N|
|2|U3, U5|ADP3654ARHZRL|ADP3654|Dual 4 A MOSFET driver|Analog Devices|MINI_SO_EP|	
|1|U6|UCC25230DRMT|UCC25230|12 V to 100 V input, 0.2 A output switching converter|Texas Instruments|SON-8|
|1|U7|PS2911-1|PS2911-1|4-pin, ultrasmall package, flat lead optocoupler|NEC|4.6 mm × 2.5 mm × 2.1 mm|
|1|U8|MIC5213-3.3YC5|MIC5213-3.3YC5|0.08 A/3.3 V LDO|Micrel|SC70-5|
|1|U9|TL431AQDCKT|TL431AQDCKT|V<sub>REF</sub> = 2.5 V; 1%|Texas Instruments|SC70|
|1|U11|ADP1051ACPZ|ADP1051|Digital controller|Analog Devices, Inc.|LFCSP|
\\
\\
====Printed Circuit Board (PCB) Layout====


{{ :resources:af91toplayer.png?nolink&500 |}}
<WRAP centeralign>//Figure 8. Top Layer//</WRAP>
\\

{{ :resources:af92layer11.png?nolink&500 |}}
<WRAP centeralign>//Figure 9. Layer 2//</WRAP>
\\

{{ :resources:af93layer3.png?nolink&500  |}}
<WRAP centeralign>//Figure 10. Layer 3//</WRAP>
\\

{{ :resources:af94layer4.png?nolink&500  |}}
<WRAP centeralign>//Figure 11. Layer 4//</WRAP>
\\


{{ :resources:af95layer5.png?nolink&500  |}}
<WRAP centeralign>//Figure 12. Layer 5//</WRAP>
\\


{{ :resources:af96layer6.png?nolink&500  |}}
<WRAP centeralign>//Figure 13. Layer 6//</WRAP>
\\

{{ :resources:af97layer7.png?nolink&500  |}}
<WRAP centeralign>//Figure 14. Layer 7//</WRAP>
\\


{{ :resources:af98layer8.png?nolink&500  |}}
<WRAP centeralign>//Figure 15. Layer 8//</WRAP>
\\


{{ :resources:af99layer9.png?nolink&500  |}}
<WRAP centeralign>//Figure 16. Layer 9//</WRAP>
\\


{{ :resources:af100layer10.png?nolink&500  |}}
<WRAP centeralign>//Figure 17. Layer 10//</WRAP>
\\


{{ :resources:af101layer11.png?nolink&500  |}}
<WRAP centeralign>//Figure 18. Layer 11//</WRAP>
\\


{{ :resources:af102layer12.png?nolink&500  |}}
<WRAP centeralign>//Figure 19. Layer 12//</WRAP>
\\


{{ :resources:af103layer13.png?nolink&500  |}}
<WRAP centeralign>//Figure 20. Layer 13//</WRAP>
\\


{{ :resources:af104layer14.png?nolink&500  |}}
<WRAP centeralign>//Figure 21. Layer 14//</WRAP>
\\

{{ :resources:af105layer15.png?nolink&500  |}}
<WRAP centeralign>//Figure 22. Layer 15//</WRAP>
\\


{{ :resources:af106bottomlayer.png?nolink&500  |}}
<WRAP centeralign>//Figure 23. Bottom Layer//</WRAP>




	 






===== Standard DC-to-DC Test Report=====

==== Test Items Summary Tables====
The specification in the test form is defined under 25°C and pass/fail is according to the specification. The characterizations derived using the following equipment: 
  * Programmable power supply: Chroma 62012P-100-50
  * DC electronic load: Chroma 6314A and Chroma 63016A
  * Digital phosphor oscilloscope: Tektronix DPO4054
  * Current probe: Tektronix TCP0030
  * Multimeter: Agilent 34410A and FLUKE 117C

\\


**Table 4. Input Characteristics**

^Test Item ^Specification ^Result^
|Efficiency |>94.5% when V<sub>IN</sub> = 48 V and I<sub>O</sub> = 20 A|Pass|
| |>94.5% when V<sub>IN</sub> = 48 V and I<sub>O</sub> = 10 A|Pass|
| |>91.5% V<sub>IN</sub> = 48 V and I<sub>O</sub> = 6 A|Pass|
|Maximum Input Current| <10 A when V<sub>IN</sub> = 36 V and I<sub>O</sub> = 20 A|Pass|
|Input Idling Power| <4 W when V<sub>IN</sub> = 48 V and I<sub>O</sub> = 0 A|  |

\\

**Table 5. Output Characterization**
^Test Item ^Specification ^Result^
|Output Voltage Setpoint |11.88 V to 12.12 V| Pass|
|Output Voltage Range |11.64 V to 12.36 V with V<sub>IN</sub> = 40 V to 75 V and I<sub>O</sub> = 0 A to 20 A| Pass|
|Line Regulation |<±2% with V<sub>IN</sub> = 40 V to 75 V and I<sub>O</sub> = 20 A| Pass|
|Load Regulation |<±3% with V<sub>IN</sub> = 48 V and I<sub>O</sub> = 0 A to 20 A| Pass|
|Output Ripple and Noise| <250 mV with 20 MHz bandwidth, V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A | |
| |<500 mV with 1 GHz bandwidth, V<sub>IN</sub> = 48 V and I<sub>O</sub> = 20 A | |
|Dynamic Load Response |ΔV<sub>O</sub> < 600 mV and T<sub>SET</sub> < 200 µs with I<sub>O</sub> changes at a step of 10 A, 15 A, 10 A and a speed of 0.1 A/µs|Pass|
| |ΔV<sub>O</sub> < 600 mV and T<sub>SET</sub> < 300 µs with I<sub>O</sub> changes at a step of 10 A, 15 A, 10 A and a speed of 1 A/µs|Pass|
| |ΔV<sub>O</sub> < 600 mV and T<sub>SET</sub> < 200 µs with I<sub>O</sub> changes at a step of 2 A, 20 A, 2 A and a speed of 0.1 A/µs|Pass|
|Turn-On Transient |T<sub>DSTART</sub> < 100 ms,T<sub>START</sub> < 100 ms, and ΔV<sub>OSHOOT</sub> < 5% V<sub>O</sub> with V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A |Pass|
|Turn-Off Transient |Not specified |Pass|

\\

**Table 6. Protection**
^Test Item ^Specification ^Result^
|Input Undervoltage Protection |Turns on the unit with V<sub>IN</sub> = 31 V to 35.5 V| Pass|
| |Turns off the unit with V<sub>IN</sub> = 30 V to 35 V| Pass|
| |Hysteresis between turn on and turn off should be higher than 1 V|Pass|
|Output Overvoltage Protection (OVP)| Enable hiccup mode when V<sub>O</sub> triggers the OVP setting point within 14 V to 16 V with V<sub>IN</sub> = 48 V|Pass|
|Output Overcurrent Protection (OVC) |Enable hiccup  mode when I<sub>O</sub> triggers the OCP setting point within 22 A to 28 A with V<sub>IN</sub> = 36 V to 75 V|Pass|
|Output Short-Circuit Protection |Ensure I<sub>O</sub> < 5 A and the output can be shorting continuously with enable hiccup mode |Pass|
|Overtemperature Protection (OTP) | |Pass|

\\


**Table 7. Monitoring**
^Test Item ^Specification ^Result^
|Input Voltage Detected Precision |< ±1 V with V<sub>IN</sub> = 36 V to 75 V, I<sub>O</sub> = 0 A to 20 A| Pass|
|Input Current Detected Precision |< ±0.5 A with V<sub>IN</sub> = 36 V to 75 V, I<sub>O</sub> = 0 A to 20 A| |
|Input Power Detected Precision |< ±12 W with V<sub>IN</sub> = 36 V to 75 V, I<sub>O</sub>  = 5 A to 20 A |	 |
|Output Voltage Detected Precision |< ±0.2 V with V<sub>IN</sub> = 36 V to 75 V, I<sub>O</sub> = 0 A to 20 A |	Pass|
|Output Current Detected Precision |< ±1 A with V<sub>IN</sub> = 36 V to 75 V, I<sub>O</sub> = 0 A to 20 A |	Pass|
|Output Power Detected Precision |< ±1 W with V<sub>IN</sub> = 36 V to 75 V, I<sub>O</sub> = 0 A to 20 A |	Pass|
|Board Thermal | | |	

	
===== Input Characterization=====
Input characterization data is available in Table 4.

==== Efficiency====

=== Test Conditions ===

The unit operates under full input voltage and load range. Efficiency was measured or computed after warming up for a minimum of 10 minutes.

=== Pass/Fail Criteria===

With V<sub>IN</sub> = 48 V and V<sub>O</sub> = 12 V, η > 94% when I<sub>O</sub> = 20 A.

Test result: Pass

**Table 8. Efficiency**

^ 	^	^	^<WRAP centeralign>Specification (%)</WRAP>	 ^^^<WRAP centeralign>Test Results (%)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C^+25°C^+85°C ^-40°C^+25°C^+85°C^
|Efficiency |48	 |20 |  >94  ||| |94.468 | |  

{{ :resources:a10_-ug656_brick_efficiency.png?nolink&500 |}}
<WRAP centeralign>//Figure 24. Eighth Brick Efficiency, ADP5051//</WRAP>\\


**Table 9.**

^V<sub>IN</sub> (V) ^I<sub>IN</sub> (A) ^V<sub>O</sub> (V) ^I<sub>O</sub> (A) ^η (%)  ^V<sub>IN</sub> (V) ^I<sub>IN</sub> (A) ^V<sub>O</sub> (V) ^I<sub>O</sub> (A) ^η (%)^
|36.009 |0.110 |12.010 |0.000 |0.000 |48.018 |0.105 |12.012 |0.000 |0.000|
|35.988 |0.433 |12.009 |0.968 |74.527 |48.001 |0.346 |12.012 |0.967 |69.849|
|35.966 |0.768 |12.009 |1.959 |85.228 |47.983 |0.597 |12.012 |1.958 |82.138|
|35.943 |1.117 |12.009 |2.983 |89.269 |47.967 |0.858 |12.012 |2.983 |87.077|
|35.920 |1.457 |12.008 |3.973 |91.147 |47.950 |1.111 |12.010 |3.973 |89.588|
|35.896	|1.801	|12.008	|4.967	|92.268	|47.932	|1.367 |12.010	|4.967	|91.008|
|35.870	|2.159	|12.008	|5.994	|92.942	|47.913	|1.635	|12.009	|5.994	|91.882|
|35.847	|2.508	|12.007	|6.987	|93.326	|47.898	|1.897	|12.009	|6.983	|92.290|
|35.822	|2.849	|12.006	|7.976	|93.849	|47.880	|2.159	|12.008	|7.976	|92.653|
|35.799	|3.205	|12.007	|9.002	|94.206	|47.859	|2.427	|12.008	|9.002	|93.045|
|35.776	|3.549	|12.006	|9.994	|94.502	|47.844	|2.686	|12.008	|9.994	|93.389|
|35.752	|3.883	|12.005	|10.953	|94.707	|47.826	|2.934	|12.006	|10.953	|93.708|
|35.725	|4.246	|12.005	|11.981	|94.832	|47.805	|3.203	|12.007	|11.981	|93.962|
|35.700	|4.592	|12.004	|12.967	|94.952	|47.790	|3.462	|12.005	|12.967	|94.102|
|35.673	|4.944	|12.004	|13.963	|95.041	|47.772	|3.721	|12.002	|13.963	|94.278|
|35.645	|5.309	|12.004	|14.988	|95.077	|47.753	|3.991	|12.001	|14.990	|94.390|
|35.618	|5.664	|12.003	|15.982	|95.089	|47.732	|4.253	|12.000	|15.982	|94.466|
|35.589	|6.020	|12.002	|16.976	|95.099	|47.715	|4.517	|11.999	|16.974	|94.490|
|35.568	|6.393	|12.000	|18.000	|94.993	|47.696	|4.791	|11.999	|17.998	|94.510|
|35.532	|6.752	|11.999	|18.990	|94.977	|47.675	|5.057	|11.996	|18.991	|94.503|
|35.505	|7.115	|11.997	|19.983	|94.901	|47.656	|5.324	|11.993	|19.985	|94.468|
| | | | | | | | | | |
|60.030	|0.104	|12.010	|0.000	|0.000	|75.040	|0.095	|12.006	|0.000	|0.000|
|60.010	|0.292	|12.009	|0.964	|66.068	|75.030	|0.245	|12.006	|0.964	|62.968|
|60.000	|0.490	|12.008	|1.956	|79.906	|75.020	|0.405	|12.006	|1.958	|77.447|
|59.980	|0.698	|12.008	|2.981	|85.543	|75.000	|0.571	|12.005	|2.981	|83.571|
|59.980	|0.901	|12.007	|3.971	|88.242	|74.990	|0.734	|12.005	|3.973	|86.702|
|59.960	|1.107	|12.009	|4.963	|89.811	|74.980	|0.898	|12.005	|4.965	|88.484|
|59.940	|1.321	|12.008	|5.988	|90.775	|74.970	|1.071	|12.005	|5.993	|89.630|
|59.930	|1.531	|12.007	|6.979	|91.325	|74.960	|1.238	|12.003	|6.971	|90.130|
|59.910	|1.742	|12.005	|7.971	|91.687	|74.950	|1.408	|12.002	|7.973	|90.672|
|59.900	|1.961	|12.004	|8.996	|91.935	|74.930	|1.585	|12.001	|9.000	|90.938|
|59.880	|2.169	|12.003	|9.991	|92.312	|74.920	|1.756	|11.999	|9.994	|91.159|
|59.870	|2.369	|12.002	|10.950	|92.680	|74.910	|1.917	|11.998	|10.953	|91.532|
|59.860	|2.582	|12.001	|11.973	|92.981	|74.900	|2.087	|11.996	|11.977	|91.900|
|59.850	|2.788	|12.000	|12.963	|93.218	|74.890	|2.253	|11.994	|12.967	|92.193|
|59.830	|2.996	|12.000	|13.959	|93.452	|74.880	|2.419	|11.994	|13.961	|92.429|
|59.810	|3.210	|11.997	|14.985	|93.626	|74.870	|2.591	|11.991	|14.988	|92.653|
|59.800	|3.420	|11.997	|15.978	|93.736	|74.860	|2.758	|11.990	|15.980	|92.791|
|59.780	|3.630	|11.994	|16.972	|93.815	|74.850	|2.926	|11.988	|16.972	|92.906|
|59.770	|3.847	|11.992	|17.996	|93.849	|74.830	|3.100	|11.987	|17.996	|92.996|
|59.750	|4.059	|11.992	|18.988	|93.887	|74.820	|3.270	|11.985	|18.990	|93.030|
|59.730	|4.272	|11.990	|19.981	|93.900	|74.810	|3.440	|11.981	|19.983	|93.038|
\\

==== Maximum Input Current====

=== Test Conditions ===

The unit was set at maximum load and the input voltage was set to the minimum value.

=== Pass/Fail Criteria===

With I<sub>IN</sub> = 10 A when V<sub>IN</sub> = 36 V and I<sub>O</sub> = 20 A.

Test result: Pass

**Table 10. Maximum Input Current**

^ 	^	^	^ <WRAP centeralign>Specification (A)</WRAP>	 ^^^<WRAP centeralign>Test Results (A)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C^+25°C^+85°C ^-40°C^+25°C^+85°C^
|I<sub>IN</sub> |<36	 |20 |<10 |<10 |<10   | |7.115| |  

==== Input Idling Power====

=== Test Conditions ===

The unit was set at no load with rated input voltage.

=== Pass/Fail Criteria===

Pin <4 W when V<sub>IN</sub> = 48 V and I<sub>O</sub> = 0 A.

Test result: 

**Table 11. Input Idling Power**

^ 	^	^	^ <WRAP centeralign>Specification (W)</WRAP>	 ^^^<WRAP centeralign>Test Results (W)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C^+25°C^+85°C ^-40°C^+25°C^+85°C^
|P<sub>O</sub> |<36	 |0 |  Not specified  ||| |3.957 |  |
|P<sub>O</sub> |48 |0 |  <4  ||| |5.018| |
|P<sub>O</sub> |60 |0 |  Not specified   ||| |6.243 | |
|P<sub>O</sub> |75 |0 |  Not specified  ||| |7.091 | |

\\

===== Output Characterization =====

The test items summary for Output Characterization specifications is available in Table 4.

==== Output Voltage Setpoint====

=== Test Condition===

The unit was set at full load with rated input voltage.

=== Pass/Fail Criteria ===

11.88 V < V<sub>O</sub> < 12.12 V when V<sub>IN</sub> = 48 V and I<sub>O</sub> = 20 A.

Test result: Pass

**Table 12. Output Voltage Setpoint**


^ 	^	^	^ <WRAP centeralign>Specification (V)</WRAP>	 ^^^<WRAP centeralign>Test Results (V)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C^+25°C^+85°C ^-40°C^+25°C^+85°C^
|V<sub>O</sub> |48	 |20 |  11.88 to 12.12  ||| |11.993| |  


====Output Voltage Range====

===Test Condition===

The unit was operating under full input voltage and load range.

===Pass/Fail Criteria===

11.64 V < V<sub>O</sub> < 12.36 V when V<sub>IN</sub> = 36 V to75 V and I<sub>O</sub> = 0 A to 20 A.

Test result: Pass

**Table 13. Output Voltage Range**

^ 	^	^	^ <WRAP centeralign>Specification (V)</WRAP>	 ^^^<WRAP centeralign>Test Results (V)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C^+25°C^+85°C ^-40°C^+25°C^+85°C^
|V<sub>O</sub>	|36	|0	|  11.64 to 12.36  ||| |12.010 | |
|V<sub>O</sub>	|36	|20	|  11.64 to 12.36  ||| |11.997 | |	
|V<sub>O</sub>	|48	|0	|  11.64 to 12.36  ||| |12.012 | |	
|V<sub>O</sub>	|48	|20	|  11.64 to 12.36  ||| |11.993 | |	
|V<sub>O</sub>	|60	|0	|  11.64 to 12.36  ||| |12.010 | |	
|V<sub>O</sub>	|60	|20	|  11.64 to 12.36  ||| |11.990 | |	
|V<sub>O</sub>	|75	|0	|  11.64 to 12.36  ||| |12.006 | |	
|V<sub>O</sub>	|75	|20	|  11.64 to 12.36  ||| |11.981 | |	


====Line Regulation====

===Test Condition===

The unit was operating under full input voltage range and maximum load.

===Pass/Fail Criteria===

11.76 V < V<sub>O</sub> < 12.24 V when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 20 A.

Test result: Pass

**Table 14. Line Regulation**

^ 	^	^	^ <WRAP centeralign>Specification (V)</WRAP>	 ^^^<WRAP centeralign>Test Results (V)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C^+25°C^+85°C ^-40°C^+25°C^+85°C^
|V<sub>O</sub>	|36	|20	|  11.64 to 12.36  ||| |11.997 | |	
|V<sub>O</sub>	|48	|20	|  11.64 to 12.36  ||| |11.993 | |		
|V<sub>O</sub>	|60	|20	|  11.64 to 12.36  ||| |11.990 | |	
|V<sub>O</sub>	|75	|20	|  11.64 to 12.36  ||| |11.981 | |	

{{ :resources:af9_linereg.png?nolink&450 |}}
<WRAP centeralign>//Figure 25. Eighth Brick Line Regulation//</WRAP>
====Load Regulation====

===Test Condition===

The unit was operating under rated input voltage range and full load range.

===Pass/Fail Criteria===

11.64 V < V<sub>O</sub> < 12.36 V when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A.

Test result: Pass

**Table 15. Load Regulation**


^ 	^	^	^ <WRAP centeralign>Specification (V)</WRAP>	 ^^^<WRAP centeralign>Test Results (V)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C^+25°C^+85°C ^-40°C^+25°C^+85°C^
|V<sub>O</sub>	|36 |0 |  11.64 to 12.36  ||| |12.01	 | |
|V<sub>O</sub>	|36 |2 |  11.64 to 12.36	  ||| |12.009 | |	
|V<sub>O</sub>	|36 |4 |  11.64 to 12.36	  ||| |12.008 | |	
|V<sub>O</sub>	|36 |6 |  11.64 to 12.36	  ||| |12.008 | |	
|V<sub>O</sub>	|36 |8 |  11.64 to 12.36	  ||| |12.006 | |	
|V<sub>O</sub>	|36 |10 |  11.64 to 12.36  ||| |12.006 | |	
|V<sub>O</sub>	|36 |12 |  11.64 to 12.36  ||| |12.005 | |	
|V<sub>O</sub>	|36 |14 |  11.64 to 12.36  ||| |12.004 | |	
|V<sub>O</sub>	|36 |16 |  11.64 to 12.36  ||| |12.003 | |	
|V<sub>O</sub>	|36 |18 |  11.64 to 12.36  ||| |12.000 | |	
|V<sub>O</sub>	|36 |20 |  11.64 to 12.36  ||| |11.997 | |	
|V<sub>O</sub>	|48 |0 |  11.64 to 12.36  ||| |12.012 | |	
|V<sub>O</sub>	|48 |2	|  11.64 to 12.36  ||| |12.012 | |	
|V<sub>O</sub>	|48 |4	|  11.64 to 12.36  ||| |12.010 | |	
|V<sub>O</sub>	|48 |6	|  11.64 to 12.36  ||| |12.009 | |	
|V<sub>O</sub>	|48 |8	|  11.64 to 12.36  ||| |12.008 | |	
|V<sub>O</sub>	|48 |10	|  11.64 to 12.36  ||| |12.008 | |	
|V<sub>O</sub>	|48 |12	|  11.64 to 12.36  ||| |12.007 | |	
|V<sub>O</sub>	|48 |14	|  11.64 to 12.36  ||| |12.002 | |	
|V<sub>O</sub>	|48 |16	|  11.64 to 12.36  ||| |12.001 | |	
|V<sub>O</sub>	|48 |18	|  11.64 to 12.36  ||| |11.999 | |	
|V<sub>O</sub>	|48 |20	|  11.64 to 12.36  ||| |11.993 | |	
|V<sub>O</sub>	|60 |0 |  11.64 to 12.36  ||| |12.010 | |	
|V<sub>O</sub>	|60 |2|  11.64 to 12.36  ||| |12.008 | |	
|V<sub>O</sub>	|60 |4|  11.64 to 12.36  ||| |12.007 | |	
|V<sub>O</sub>	|60 |6|  11.64 to 12.36  ||| |12.008 | |	
|V<sub>O</sub>	|60 |8|  11.64 to 12.36  ||| |12.005 | |	
|V<sub>O</sub>	|60 |10|  11.64 to 12.36  ||| |12.003 | |	
|V<sub>O</sub>	|60 |12|  11.64 to 12.36  ||| |12.002 | |	
|V<sub>O</sub>	|60 |14|  11.64 to 12.36  ||| |12.000 | |	
|V<sub>O</sub>	|60 |16|  11.64 to 12.36  ||| |11.997 | |	
|V<sub>O</sub>	|60 |18|  11.64 to 12.36  ||| |11.994 | |	
|V<sub>O</sub>	|60 |20|  11.64 to 12.36  ||| |11.992 | |	
|V<sub>O</sub>	|75 |0 |  11.64 to 12.36  ||| |12.006 | |	
|V<sub>O</sub>	|75 |2|  11.64 to 12.36  ||| |12.006 | |	
|V<sub>O</sub>	|75 |4|  11.64 to 12.36  ||| |12.005 | |	
|V<sub>O</sub>	|75 |6|  11.64 to 12.36  ||| |12.005 | |	
|V<sub>O</sub>	|75 |8|  11.64 to 12.36  ||| |12.002 | |	
|V<sub>O</sub>	|75 |10|  11.64 to 12.36  ||| |11.999 | |	
|V<sub>O</sub>	|75 |12|  11.64 to 12.36  ||| |11.996 | |	
|V<sub>O</sub>	|75 |14|  11.64 to 12.36  ||| |11.994 | |	
|V<sub>O</sub>	|75 |16|  11.64 to 12.36  ||| |11.990 | |	
|V<sub>O</sub>	|75 |18|  11.64 to 12.36  ||| |11.987 | |	
|V<sub>O</sub>	|75 |20|  11.64 to 12.36  ||| |11.981 | |


{{ :resources:af10_loadreg.png?nolink&450 |}}
<WRAP centeralign>//Figure 26. Eighth Brick Load Regulation//</WRAP>
====Constant Current====

===Test Condition===

Apply a CR load at the output terminals and decrease the loaded resistor.

===Pass/Fail Criteria===

Load current should limit under the IOUT_OC_LIMIT.

{{ :resources:af11_constcurr.png?nolink&500 |}}
<WRAP centeralign>//Figure 27. Eighth Brick Constant Current Mode//</WRAP>


====Output Ripple and Noise====

===Test Condition===

Ripple voltage and noise were measured at the pins of the mating connector of which each output was decoupled by a ceramic (X7R) capacitor and an aluminum capacitor, as shown in following figure.

{{ :resources:af12_rip_noise.png?nolink&500 |}}
<WRAP centeralign>//Figure 28. Decoupled Eighth Brick Power Module//</WRAP>


===Pass/Fail Criteria===

V<sub>O</sub> p-p < 250 mV with 20 MHz signal bandwidth when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A; V<sub>O</sub> p-p  < 500 mV with 1 GHz signal bandwidth when V<sub>IN</sub> = 48 V and I<sub>O</sub> = 20 A.

Test result: Pass

**Table 16. Output Ripple and Noise**

^ 	^	^	^ <WRAP centeralign>Specification (V)</WRAP>	 ^^^<WRAP centeralign>Test Results (V)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C ^+25°C ^+85°C ^-40°C ^+25°C ^+85°C^
|V<sub>O</sub> p-p with 20 MHz Bandwidth |36 |0 |<250 |<250 |<250 | |58 | |	
|V<sub>O</sub> p-p with 20 MHz Bandwidth |48 |0 |<250 |<250 |<250 | |92 | |
|V<sub>O</sub> p-p with 20 MHz Bandwidth |60 |0 |<250 |<250 |<250 | |120 | |
|V<sub>O</sub> p-p with 20 MHz Bandwidth |75 |0 |<250 |<250 |<250 | |126 | |
|V<sub>O</sub> p-p with 20 MHz Bandwidth |36 |20 |<250 |<250 |<250 | |58 | |
|V<sub>O</sub> p-p with 20 MHz Bandwidth |48 |20 |<250 |<250 |<250 | |86 | |
|V<sub>O</sub> p-p with 20 MHz Bandwidth |60 |20 |<250 |<250 |<250 | |104 | |	
|V<sub>O</sub> p-p with 20 MHz Bandwidth |75 |20 |<250 |<250 |<250 | |122 | |	
| | | | | | | | | | 
|V<sub>O</sub> p-p with 500 MHz Bandwidth |48	|20| |<500 | | |110 | |


**Channel 1: V<sub>O</sub> AC-Coupled**

{{ :resources:af29toaf36new.png?nolink&700 |}}

\\
**500 MHz Signal Bandwidth when V<sub>IN</sub> = 48 V**

{{ :resources:af37to38new.png?nolink&600 |}}
====Dynamic Load Response====

===Test Condition===

The dynamic load response was evaluated by measuring the overshoot/undershoot (ΔV<sub>O</sub>) and the settling time (T<sub>SET</sub>) with load changes at the specified step and speed in full input voltage range.

===Pass/Fail Criteria===

ΔV<sub>O</sub> < 600 mV and T<sub>SET</sub> < 200 µs when Io changes at a step of 10 A, 15 A,10 A and a speed of 0.1 A/µs;
ΔV<sub>O</sub> < 600 mV and T<sub>SET</sub> < 300 µs when Io changes at a step of 10 A, 15 A, 10 A and a speed of 1 A/µs;     
ΔV<sub>O</sub> < 600 mV when I<sub>O</sub> changes at a step of 2 A, 20 A, 2 A and a speed of 0.1 A/µs.

Test result: Pass

**Table 17. Dynamic Load Response, Load Current Slew Rate is 0.1 A/µs**

^ 	^	^	^ <WRAP centeralign>Specification (mV/µs)</WRAP>	 ^^^<WRAP centeralign>Test Results (mV/µs)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (%) ^-40°C ^+25°C ^+85°C ^-40°C ^+25°C ^+85°C^
|ΔV<sub>O</sub>/T<sub>SET</sub> |36 |50% to >75% |  600/200  ||| |222/74 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |36 |75% to >50% |  600/200  ||| |234/77 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |48 |50% to >75% |  600/200  ||| |222/125 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |48 |75% to >50% |  600/200  ||| |222/115 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |60 |50% to >75% |  600/200  ||| |226/126 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |60 |75% to >50% |  600/200  ||| |214/133 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |75 |50% to >75% |  600/200  ||| |222/115 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |75 |75% to >50% |  600/200  ||| |210/132 | |
	
\\
\\

**Table 18. Dynamic Load Response, Load Current Slew Rate is 1 A/µs**

^ 	^	^	^ <WRAP centeralign>Specification (mV/µs)</WRAP>	 ^^^<WRAP centeralign>Test Results (mV/µs)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (%) ^-40°C ^+25°C ^+85°C ^-40°C ^+25°C ^+85°C^
|ΔV<sub>O</sub>/T<sub>SET</sub> |36 |50% to >75% |  600/300  ||| |278/60 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |36 |75% to >50% |  600/300  ||| |286/57 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |48 |50% to >75% |  600/300  ||| |302/109 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |48 |75% to >50% |  600/300  ||| |290/100 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |60 |50% to >75% |  600/300  ||| |302/107 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |60 |75% to >50% |  600/300  ||| |298/106 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |75 |50% to >75% |  600/300  ||| |318/105 | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |75 |75% to >50% |  600/300  ||| |298/137 | |
\\
\\
**Table 19. Dynamic Load Response, Load Current Slew Rate is 0.1 A/µs**
^ 	^	^	^ <WRAP centeralign>Specification (mV/µs)</WRAP>	 ^^^<WRAP centeralign>Test Results (mV/µs)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (%) ^-40°C ^+25°C ^+85°C ^-40°C ^+25°C ^+85°C^
|ΔV<sub>O</sub>/T<sub>SET</sub> |36 |10% to >100% |  600/not specified  ||| |404/not specified | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |36 |100% to >10% |  600/not specified  ||| |340/not specified | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |48 |10% to >100% |  600/not specified  ||| |388/not specified| |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |48 |100% to >10% |  600/not specified  ||| |324/not specified | |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |60 |10% to >100% |  600/not specified  ||| |372/not specified| |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |60 |100% to >10% |  600/not specified  ||| |324/not specified| |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |75 |10% to >100% |  600/not specified  ||| |356/not specified| |	
|ΔV<sub>O</sub>/T<sub>SET</sub> |75 |100% to >10% |  600/not specified  ||| |316/not specified| |

\\

**Channel 1 (Blue): V<sub>O</sub> (AC-Coupled); Channel 4 (Green): I<sub>O</sub> Load Step = 10 A, 15 A, 10 A with a slew rate of 0.1 A/µs**

{{ :resources:af39toaf46new.png?nolink&600 |}}\\
**Load Step: 10 A, 15 A, 10 A with a Slew Rate of 1 A/µs**

{{ :resources:af47toaf54_tdstart.png?nolink&600 |}}
\\
==Load Step: 2 A, 20 A, 2 A with a Slew Rate of 1 A/µs==

{{ :resources:af55toaf62.png?nolink&600 |}}
====Turn-On Transient====

===Test Condition===

The unit was tested when the input voltage is applied.

===Pass/Fail Criteria===

T<sub>DSTART</sub> (start delay time from when the V<sub>IN</sub> is applied to when the output voltage starts to ramp up) < 100 ms when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A;
T<sub>START</sub> (start-up time when the output voltage increases from 0 V to 12 V) < 100 ms when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A.

Test result: Pass

**Table 20. Turn-On Transient, T<sub>DSTART</sub>**
^ 	^	^	^ <WRAP centeralign>Specification (ms)</WRAP>	 ^^^<WRAP centeralign>Test Results (ms)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C ^+25°C ^+85°C ^-40°C ^+25°C ^+85°C^
|T<sub>DSTART</sub> |36 |0 |  <100  ||| |13.4| |	
|T<sub>DSTART</sub>|36 |20 |  <100  ||| |13.4| |	
|T<sub>DSTART</sub> |48 |0 |  <100  ||| |12.5| |	
|T<sub>DSTART</sub>|48 |20 |  <100  ||| |12.9| |	
|T<sub>DSTART</sub> |60 |0 |  <100  ||| |13.1| |	
|T<sub>DSTART</sub> |60 |20 |  <100  ||| |12.8 | |	
|T<sub>DSTART</sub>|75 |0 |  <100  ||| |12.8| |	
|T<sub>DSTART</sub> |75 |20 |  <100  ||| |12.5| |

\\
**T<sub>DSTART</sub>; Channel 1 (Blue): V<sub>O</sub>, Channel 2 (Cyan): V<sub>IN</sub>, Channel 4 (Green): I<sub>O</sub>**

{{ :resources:af63toaf70_tdstartnew.png?nolink&600 |}}
\\
**Table 21. Turn-On Transient, T<sub>START</sub>**
^ 	^	^	^ <WRAP centeralign>Specification (ms)</WRAP>	 ^^^<WRAP centeralign>Test Results (ms)</WRAP>^^^
^ Item ^V<sub>IN</sub> (V) ^Load (A) ^-40°C ^+25°C ^+85°C ^-40°C ^+25°C ^+85°C^
|T<sub>START</sub> |36 |0 |  <100  ||| |13.1| |	
|T<sub>START</sub>|36 |20 |  <100  ||| |13.1| |	
|T<sub>START</sub> |48 |0 |  <100  ||| |12.5| |	
|T<sub>START</sub>|48 |20 |  <100  ||| |12.2| |	
|T<sub>START</sub> |60 |0 |  <100  ||| |11.5| |	
|T<sub>START</sub> |60 |20 |  <100  ||| |11.5 | |	
|T<sub>START</sub>|75 |0 |  <100  ||| |11.1| |	
|T<sub>START</sub> |75 |20 |  <100  ||| |11| |

\\	
**T<sub>START</sub> Channel 1 (Blue): V<sub>O</sub>, Channel 2 (Cyan): V<sub>IN</sub>, Channel 4 (Green): I<sub>O</sub>**
{{ :resources:af71tof78_tstartnew2.png?nolink&600 |}}

====Prebias Start====

===Test Condition===

The unit is shut down for a while by the on/off pin and restarts.

===Pass/Fail Criteria===

No output voltage drop under such start condition.

Test result: Pass

**Channel 1 (Blue): V<sub>O</sub>, Channel 3 (Purple): On/Off**

{{ :resources:af79tof82new.png?nolink&600 |}}
====Turn-Off Transient====

===Test Condition===

The unit was tested when the input voltage is removed.

===Pass/Fail Criteria===

Output voltage drops with monotonic slew rate and no negative current when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A.

Test result: Pass

**Table 22. V<sub>O</sub> and I<sub>O</sub> at 36 V, 48 V, 60 V, and 75 V** 

^Load (A) ^Specification at -40°C, +25°C, and +85°C  	^Pass or Fail at 25°C^
|0 |Monotonic drop and no negative current |Pass|	
|20 |Monotonic drop and no negative current |Pass|			

\\
**Channel 1 (Blue): V<sub>O</sub>, Channel 2 (Cyan): V<sub>IN</sub>, Channel 4 (Green): I<sub>O</sub>**

{{ :resources:af83tof90new.png?nolink&600 |}}
=====Protection=====
See Table 5 for Protection specifications.

====Input Undervoltage Lockout (UVLO)====

===Test Condition===

Adjust the input voltage and turn on and turn off the unit.

===Pass/Fail Criteria===

Turns on the unit when V<sub>IN</sub> = 31 V to 35.5 V and I<sub>O</sub> = 0 A to 20 A.
Turns off the unit when V<sub>IN</sub> = 30 V to 35 V and I<sub>O</sub> = 0 A to 20 A.
Hysteresis between turn on and turn off should be higher than 1 V.

Test result: Pass

**Table 23. Input UVLO**

^  ^  ^Specification (V) ^^^Test Results (V)^^^
^Item ^Load (A) ^−40°C ^+25°C ^+85°C ^−40°C ^+25°C ^+85°C^
|Turn-On Input Voltage |0 and 20 |  31 to 35.5  ||| |34 | |
|Turn-Off Input Voltage |0 |  30 to 35  ||| |31.9| |
|Turn-Off Input Voltage |20 |  30 to 35  ||| |32 | |
|Hysteresis |0 |  >1  ||| |2.1 | |
|Hysteresis |20 |  >1  ||| |2 | |

Note that for auxiliary power turn-on input voltage, auxiliary power turn-off input voltage, and hysteresis, all specifications are not specified and test results are to be determined.

====Output Overvoltage Protection (Output OVP)====

===Test Condition===

Set the VOUT_COMMAND to a value which exceeds the VOUT_OV_LIMIT.

===Pass/Fail Criteria===

The actual output voltage cannot exceed 15 V.

Test result: Pass

**Table 24. OVP Setting Point with Enable Hiccup Mode (Y)**

^  ^ ^  ^Specification (V) ^^^Test Results (V)^^^
^Item ^V<sub>IN</sub> (V) ^Load (A) ^−40°C ^+25°C ^+85°C ^−40°C ^+25°C ^+85°C^
|OVP with EHM (Y) |48 |0 |  15  ||| |14.5 | |	
|OVP with EHM (Y) |48 |20 |  15  ||| |14.3 | |



**Channel 1 (Blue): V<sub>O</sub>, Channel 4 (Green): I<sub>O</sub>**

{{ :resources:af91andf92ovpnew.png?nolink&600 |}}
====Output Overcurrent Protection (Output OCP)====

===Test Condition===
Apply a 23 A CC load at the output terminals.

===Pass/Fail Criteria===

The unit should be able to shut down the power conversion and restart after a certain time.

Test result: Pass

**Channel 1 (Blue): V<sub>O</sub>, Channel 4 (Green): I<sub>O</sub>**

{{ :resources:af93toaf96ocpnew.png?nolink&600 |}}

====Output Short-Circuit Protection (Output SCP)====

===Test Condition===

A shorted load whose load current is up to 50 A is applied at the output terminals.

===Pass/Fail Criteria===

No device is damaged in this test. Testing at 36 V, 48 V, 60 V, and 75 V determined that I<sub>O</sub> and output can be shorting continuously (Y) with enable hiccup mode (Y) with no device damage specified at −40°C, +25°C, or +85°C; test results = pass for these voltage levels at 25°C.

Test result: Pass

**Channel 1 (Blue): V<sub>O</sub>, Channel 4 (Green): I<sub>O</sub>**

{{ :resources:af97tof100_scpnew.png?nolink&600 |}}
=====Monitoring=====

For full specifications listing, see Table 5.

====Input Voltage Detected Precision====

===Test Condition===

Measure V<sub>IN</sub> within full input voltage and load range.

===Pass/Fail Criteria===

EV<sub>IN</sub> (error of V<sub>IN</sub>) < ±2 V when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A.

Test result: Pass

{{ :resources:f85_evin.png?nolink&500 |}}
<WRAP centeralign>//Figure 101. Input Voltage Reading Error//</WRAP>
====Input Current Detected Precision====

===Test Condition===

Measure I<sub>IN</sub> within full input voltage and load range.

===Pass/Fail Criteria===

EI<sub>IN</sub> (error of I<sub>IN</sub>) < ±0.5 A when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 5 A to 20 A.

Test result: Pass

{{ :resources:f86eiin.png?nolink&500 |}}
<WRAP centeralign>//Figure 102. Input Current Reading Error//</WRAP>
====Input Power Detected Precision====

===Test Condition===

Measure P<sub>IN</sub> within full input voltage and load range.

===Pass/Fail Criteria===

EP<sub>IN</sub> (error of P<sub>IN</sub>) < ±12 W when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 5 A to 20 A.

Test result: 


{{ :resources:af87epin.png?nolink&500 |}}
<WRAP centeralign>//Figure 103. Input Power Reading Error//</WRAP>
====Output Voltage Detected Precision====

===Test Condition===

Measure V<sub>O</sub> within full input voltage and load range.

===Pass/Fail Criteria===

EV<sub>O</sub> (error of V<sub>O</sub>) < ±0.2 V when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A.

Test result: Pass

{{ :resources:af88evo.png?nolink&500 |}}
<WRAP centeralign>//Figure 104. Output Voltage Reading Error//</WRAP>

====Output Current Detected Precision====

===Test Condition===

Measure I<sub>O</sub> within full input voltage and load range.

===Pass/Fail Criteria===

EI<sub>O</sub> (error of I<sub>O</sub>) < ±1 A when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A.

Test result: Pass

{{ :resources:af89eio.png?nolink&500 |}}
<WRAP centeralign>//Figure 105. Output Current Reading Error//</WRAP>
====Output Power Detected Precision====

===Test Condition===

Measure P<sub>O</sub> within full input voltage and load range.

===Pass/Fail Criteria===

EP<sub>O</sub> (error of P<sub>O</sub>) < ±6 W when V<sub>IN</sub> = 36 V to 75 V and I<sub>O</sub> = 0 A to 20 A.

Test result: Pass

{{ :resources:af90epo.png?nolink&500 |}}
<WRAP centeralign>//Figure 106. Output Power Reading Error//</WRAP>
====Board Thermal====

{{ :resources:f91thermal.jpg?nolink&200 |}}
<WRAP centeralign>//Figure 107. Board Thermal, Ambient Temperature = 25°C//</WRAP>
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