This version is outdated by a newer approved version.
This version (14 Feb 2014 09:53) was approved by Andrei Cozma.The Previously approved version (10 Feb 2014 13:55) is available.
This version (14 Feb 2014 09:53) was approved by Andrei Cozma.The Previously approved version (10 Feb 2014 13:55) is available.This is an old revision of the document!
Table of Contents
Low Voltage Drive Board
Features and Block Diagram
- Drives BLDC / PMSM / Brushed DC / Stepper motors
- Drives motors up to 48V at 18A
- Integrated over current protection
- Current measurement using isolated ADCs
- Bus voltage, phase currents and total current analog feedback signals
- PGAs to maximize the current measurement input rage
- BEMF zero cross detection for sensorless control of PMSM or BLDC motors
| Simplified Block Diagram | Detailed Block Diagram |
|---|
Picture and Main Components
Key Parts
| Measurement | |
|---|---|
| AD7401A | 5 kV rms, isolated 2nd order Sigma-Delta modulator |
| AD8207 | Zero drift, high voltage, bidirectional difference amplifier |
| AD8251 | 24 MHz rail-to-rail dual op amp |
| AD8630 | Zero drift, single-supply, rail-to-rail quad op amp |
| Power | |
| ADuM5000 | isoPower® integrated isolated dc-to-dc converter |
| ADP1621 | Constant-frequency, current-mode step-up dc/dc controller |
| ADP2301 | 1.2 A, 20 V, 1.4 MHz non-synchronous step-down switching regulator |
| ADP7102 | 20 V, 300 mA, low noise, CMOS LDO |
| MOSFET Drivers | |
| ADuM5230 | Isolated half-bridge driver with integrated high-side supply |
| IRS2336DSTRPBF | High voltage 3 phase gate driver IC |
Connectors
Power connector
- The connector P4 is used to supply 12…48 VDC to the drive board
- The polarity is indicated in the picture above
BLDC / Stepper motor connector
- For BLDC motors use connector P1 (Phase 1, 2 and 3)
- For Stepper motors use connector P1 and pin 3 of P5 (Phase 1, 2, 3 and 4)
Switches
Emergency Stop Switch
- S2 is a latching emergency stop switch.
- If triggered the supply for the power stage is turned off.
- Led DS3 indicates the state of the power stage.
Reset switch
- S1 is a reset switch for the emergency stop latch.
- By pressing S1 when S2 is off the power stage is turned on.
LEDs
| LED | Description |
|---|---|
| DS1 | Vadj Power Good |
| DS2 | 12V Power Good |
| DS3 | Over Current |
| DS4 | Motor Fault |
| DS5 | PWM Enable |
| DS6 | Motor Power Good |
| < 100% 100% > |
Power Map
Motor Driver Interface
The IRS2336D Three Phase Gate Driver IC has the following interface signals features:
- 3 pairs of complementary PWM signals with inverted logic
- PWM frequency up to 150 kHz
- Hardware integrated dead-time protection
- Enable signal to start / stop the driver
- Fault signal from the driver
Downloads
resources/eval/user-guides/ad-fmcmotcon1-ebz/hardware/lv_board.1392135340.txt.gz · Last modified: 11 Feb 2014 17:15 by Mihai Bancisor