CN0190 is a reference solution for multivoltage power systems. The design can easily be adapted to customer requirements and provides the most popular system voltages. The circuit uses an optimum combination of switching and linear regulators to provide an overall efficiency of approximately 78% when the outputs are fully loaded. Output power delivered under full load is approximately 25 W.
The circuit supplies most of the typical power rails required for digital and analog circuits and also demonstrates an easy way to realize overvoltage, undervoltage, and overcurrent detection and protection. In addition, this module shows how to implement sequencing and power margining control.
The circuit is flexible and can accept a wide input voltage range from 6 V to 14 V. This is possible because the highly efficient switching controllers and regulators used in the first stage of each power rail have correspondingly wide input ranges. The ADM1178 block provides overvoltage and overcurrent detection and protection for the input supply, as well as hotswap control for the whole system. The ADM1066 offers a single-chip solution for power supply monitoring and sequencing control for all of the 12 power rails and also margining control for the 3.3V(2A) rail.
Equipment Needed (Equivalents Can be Substituted)
Test Setup Functional Block Diagram
Power Rails Efficiency Measurements
Efficiency = POUT/PIN = (VOUT × IOUT) ÷ (VIN × IIN)
- POUT can be calculated by multiplying VOUT by IOUT
- VIN and IIN can be read directly
from the display window of the Agilent E3631A dc power
- Electronic load should be set to constant current mode
Ripple and Transient Response Measurements
- Channel A of the oscilloscope monitors the
output voltage of the module
- Channel B monitors the voltage
across the 0.1 Ω current sense resistor, which is proportional to
the load current
- Electronic load should be set to “switch” mode
with preset amplitude and frequency
Connectors and Jumper Configurations
Connector 1, and should be between +6V and +14V
Output Power Options
| Image Indicator || Voltage Output || Current Output || Power Topology
| Connector 2 || +3.3V || 2A || Synchronous Buck
| Connector 3 || +1.8V || 1A || Synchronous Buck
| Connector 4 || +1.5V || 1A || Synchronous Buck
| Connector 5 || +1.0V || 2A || LDO
| Connector 6 || +1.2V || 0.5A || Synchronous Buck
| Connector 7 || +3.0V || 0.1A || LDO
| Connector 8 || -5.0V || 0.2A || Inverted Buck/Boost
| Connector 9 || +5.0V || 1A || Synchronous Buck
| Connector 10 || +2.5V || 1A || Synchronous Buck
| Connector 11 || +3.3V || 0.1A || LDO
| Connector 12 || VDD (+2.5V, +5V, +12V, +15V) || 0.1A || Sepic-Cuk
| Connector 13 || VEE (-2.5V, -5V, -12V, -15V) || 0.1A || Sepic-Cuk
I2C Programming Interface
I2C serial interface is on Connector 15 (1- SCLK, 2 - SDA, 3 - GND)
Software and Driver Installation
You can design your own control strategy and download it into the ADM1066 through this I2C bus connector(JP1) to make the power monitoring and sequencing control for your own custom application using the ADM1066 Super Sequencer Evaluation Board Software and follow instructions below.
To create a customer sequencing solution, and programming the ADM1066 you need to do the following:
Download the USB
Install the Super Sequencer Software
Install the prog106x Setup Application Software
Connect the USB
-SDP-CABLEZ to the PC, and the other end to the EVAL-CN0190-EB1Z
Download the custom .hex file to the EVAL-CN0190-EB1Z, using the Windows command prompt
Step by step details are provided below.
The ADM1066 comes pre-programmed out of the box where ALL the power outputs are active at the same time. So you do NOT need to program the board if you do not want to. The only time you need to program this board is if you want to create your own customer power sequencing/monitoring solution.
Install the USB
Open the file setup.exe located at the path \ADMxxxx Run-Time Installer\Installer\Volume\setup.exe
It is recommended that you install the software to the default directory.
Follow the on-screen prompts to install the software
Plug in the USB
-SDP-CABLEZ into your PC or labtop using the USB
Windows will automatically find the new hardware(USB
-SDP-CABLEZ) plugged the into the PC.
Sequencer Software Installation
Open the file setup.exe located at the path \SuperSequencer Apps SW Installer\Volume\setup.exe
It is recommended that you install the SuperSequencer Evaluation Software to the default directory path C:\Program Files\
Using Super Sequencer Software
Super Sequencer Evaluation Software enables the user to create new control strategy and generates new intel hex file for ADM1066. For detailed information about Super Sequencer features, visit Super Sequencer User Guide
Generating new hex file using Super Sequencer Software
Open SuperSequencerSoftwareEval.exe installed in PC
Assuming all the new configurations and controls were already done on the software, on the main window go to File and click Save Settings to File
Select Create Intel Hex File and click Save
Once completed saving, you now have a new hex file to download to ADM1066
Downloading Firmware for ADM1066
Copy the eeprom file i.e.
ADM1066_SuperSequencing_REVB.hex in the root directory on Disk C: (i.e.
converter dongle into the USB
port on your PC. Plug the other side of the cable into the JP1 on the right side of the EVAL-CN0190-EB1Z.
Make sure the marks for the signals of JP1 on the PCB match the marks on the USB
Turn on the power to the supply of EVAL-CN0190-EB1Z
Open the Command Prompt (C:\Windows\System32\cmd.exe)
In the cmd.exe, key the command
prog106x download 6A c:\ADM1066_SuperSequencing_REVB.hex
and Press Enter
ADM1066_SuperSequencing_REVB.hex file name might be different, depends on the user
The on-chip EEPROM of ADM1066 is successfully programmed if the picture below is shown on the screen after several seconds.
Remove power or turn off the power supply on (), then re-apply the power supply in order to make ADM1066 update the program from embedded EEPROM.
Schematic, PCB Layout, Bill of Materials