A3985 Overview
The A3985 is a flexible dual full-bridge gate driver suitable for driving a wide range of higher power industrial bipolar 2-phase stepper motors or 2-phase brushless dc motors. It can also be used to drive two individual torque motors or solenoid actuators. Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50.
A3985 Key Features
- Serial interface for full digital control
- Dual full-bridge gate drive for N-channel MOSFETs
- Dual 6-bit DAC current reference
- Operation over 12 to 50 V supply voltage range
- Synchronous rectification
- Cross-conduction protection
- Adjustable mixed decay
- Fixed off-time PWM current control
- Low-current idle mode