The DRV870x-Q1 family of devices is a single H-bridge gate driver that uses four external N-channel MOSFETs targeted to drive a bidirectional brushed-DC motor.
●A PH/EN, independent H-Bridge, or PWM interface allows simple interfacing to controller circuits. An internal sense amplifier provides adjustable current control. The gate driver includes circuitry to regulate the winding current using fixed off-time PWM current chopping.
●The DRV870x-Q1 family of devices drives both high-side and low-side FETs with a 10.5-V VGS gate drive. The gate-drive current for all external FETs is configurable with a single external resistor or through the serial peripheral interface (SPI).
●A low-power sleep mode is provided which shuts down internal circuitry to achieve a very-low
●quiescent-current draw.
●For all available packages, see the orderable addendum at the end of the data sheet.
● AEC-Q100 Qualified for Automotive Applications
● Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
● Single H-Bridge Gate Driver
● Drives Four External N-Channel MOSFETs
● Supports 100% PWM Duty Cycle
● 5.5- to 45-V Operating Supply-Voltage Range
● Three Control-Interface Options
● PH/EN, Independent H-Bridge, and PWM
● Serial Interface for Configuration (DRV8703-Q1)
● Adjustable Gate Drive For Slew-Rate Control
● Independent Control of Each H-Bridge
● Supports 1.8-V, 3.3-V, and 5-V logic inputs
● Current-Shunt Amplifier
● Integrated PWM Current Regulation
● Low-Power Sleep Mode
● Small Package and Footprint
● 32-Pin VQFN
● 5 mm × 5 mm
● Wettable Flanks Package
● Protection Features
● Supply Undervoltage Lockout (UVLO)
● Charge-Pump Undervoltage (CPUV) Lockout
● Overcurrent Protection (OCP)
● Gate-Driver Fault (GDF)
● Thermal Shutdown (TSD)
● Watchdog Timer (DRV8703-Q1)
● Fault-Condition Output (nFAULT)
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