Description
●The A3986 is a dual full-bridge gate driver with integrated microstepping translator suitable for driving a wide range of higher power industrial bipolar 2-phase stepper motors (typically 30 to 500 W). Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V.
●This device contains two sinusoidal DACs that generate the reference voltage for two separate fixed-off-time PWM current controllers. These provide current regulation for external power MOSFET full-bridges.
●Features and Benefits
●▪ 2-wire step and direction interface
●▪ Dual full-bridge gate drive for N-channel MOSFETs
●▪ Operation over 12 to 50 V supply voltage range
●▪ Synchronous rectification
●▪ Cross-conduction protection
●▪ Adjustable mixed decay
●▪ Integrated sinusoidal DAC current reference
●▪ Fixed off-time PWM current control
