DRV8701, the brushed DC motor fate driver with PH/EN and PWN

Texas Instruments’ DRV8701 single H-bridge gate driver uses four external N-channel MOSFETS to drive the 12 V to 24 V bidirectional motors used in the construction of home automation, industrial pumps and valves, power tools, handheld vacuum cleaners, industrial brushed-DC motors, and in robotics applications. The device features two control interface options — PH/EN (DRV8701E) or PWM (DRV8701P) — for connecting the controller to the circuits. 

DVR8701 permits adjustable current control thanks to a built-in sense amplifier, which, pairs with a gate driver to regulate the winding current using fixed off-time PWN current chopping. The device also pushes both high-and low-side field-effect transistors using a 9.5 V VGS gate drive, which exhibits a configurable current as a result of the aid received from a single external resistor on the IDRIVE pin. 

A low-power sleep mode, which can be activated by taking the nSLEEP pin low, may be used to achieve very-low quiescent current draw by shutting down internal circuitry. Protection features in the form of undervoltage lockout, charge pump faults, overcurrent shutdown, short-circuit protection, predriver faults lend themselves well in averting the potential damage that can be caused by unsuspecting fault conditions. 

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