Low Voltage Drive Board

Warning

The AD-FMCMOTCON1-EBZ is a legacy product and is no longer actively supported. This documentation is provided for reference only.

Features and Block Diagram

• Drives BLDC, PMSM, Brushed DC, and Stepper motors

• Drives motors up to 48 V at 18 A

• 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 range

• BEMF zero-crossing detection for sensorless control of PMSM or BLDC motors

Figure 1 Simplified block diagram

Figure 2 Detailed block diagram

Picture and Main Components

Figure 3 AD-DRVLV1-EBZ top view

Figure 4 AD-DRVLV1-EBZ bottom view

Key Parts

Part	Description
Measurement
AD7401A	5 kV rms, isolated 2nd order Sigma-Delta modulator
AD8207	Zero drift, high voltage, bidirectional difference amplifier
AD8251	10 MHz, 2 nV/√Hz, programmable gain instrumentation amplifier
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

Figure 5 AD-DRVLV1-EBZ connector locations

Power connector

• Connector P4 supplies 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

Figure 6 AD-DRVLV1-EBZ button and switch locations

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.

• Pressing S1 when S2 is off turns the power stage 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

Power Map

Figure 7 AD-DRVLV1-EBZ power map

Motor Driver Interface

The IRS2336D three-phase gate driver IC provides the following interface signals:

• 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