The DRV8704 is a dual-brushed motor controller for industrial equipment applications. The device controls external N-channel MOSFETs configured as two H-bridges.
●Motor current can be accurately controlled using adaptive blanking time and various current decay modes, including an automatic mixed decay mode.
●A simple PWM interface allows easy interfacing to controller circuits. A SPI serial interface is used to program the device operation. Output current (torque), gate drive settings, and decay mode are all programmable through a SPI serial interface.
●Internal shutdown functions are provided for overcurrent protection, short-circuit protection, gate driver faults, undervoltage lockout (UVLO), and overtemperature. Fault conditions are indicated by a FAULTn pin, and each fault condition is reported by a dedicated bit through SPI.
●The DRV8704 is packaged in a PowerPAD 38-pin HTSSOP package with thermal pad (Eco-friendly: RoHS & no Sb/Br).
● Pulse Width Modulation (PWM) Motor Driver
● Drives External N-Channel MOSFETs
● PWM Control Interface for Dual DC Motors
● Supports 100% PWM Duty Cycle
● 8-V to 52-V Operating Supply Voltage Range
● Adjustable Gate Drive (4 Levels)
● 50-mA to 200-mA Source Current
● 100-mA to 400-mA Sink Current
● Integrated PWM Current Regulation
● Flexible Decay Modes
● Automatic Mixed Decay Mode
● Slow Decay
● Fast Decay
● Mixed Decay (Adjustable Percent Fast)
● Highly Configurable SPI
● Torque DAC to Digitally Scale Current
● Low-Current Sleep Mode (65 µA)
● 5-V, 10-mA LDO Regulator
● Thermally-Enhanced Surface-Mount Package
● 38-Pin HTSSOP (PowerPAD)
● Protection Features
● VM Undervoltage Lockout (UVLO)
● Gate Driver Fault (PDF)
● Overcurrent Protection (OCP)
● Thermal Shutdown (TSD)
● Fault Condition Indication Pin (nFAULT)
● Fault Diagnostics through SPI
