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Low Voltage Drive Board

Features

  • Connects to the Controller board and has a power stage that can drive drive motors up to 48V and 20A.
  • Drives 2 motors simultaneously
  • High frequency drive stage implemented with ADI isolated gate drivers
  • Supported motor types
    • BLDC
    • PMSM
    • Brushed DC
    • Stepper (bipolar / unipolar)
  • Integrated over current protection
  • Reverse voltage protection
  • Current and Voltage measurement using isolated ADCs
    • Current measurement on 2 phases for 2 motors
    • DC Link Voltage measurement
  • BEMF zero cross detection for sensorless control of PMSM or BLDC motors
  • Separate voltage supplies for the 2 motors so that the motors don’t influence each other

Block Diagram

Picture and Main Components

AD-DRVLV2-EBZ Top AD-DRVLV2-EBZ Bottom

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

Switches

AD-FMC-MOTCON1-EBZ Buttons

Emergency Stop Switch
  • S2 is a latching emergency stop switch.
  • If triggered the supply for the power stage is turned off.
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.

Downloads

AD-DRVLV2-EBZ

Navigation - AD-FMCMOTCON2-EBZ

resources/eval/user-guides/ad-fmcmotcon2-ebz/hardware/lv_board.1427367158.txt.gz · Last modified: 26 Mar 2015 11:52 by Andrei Cozma