MC33887APVW H-Bridge Motor Driver IC – 5A Continuous Output with Load Current Feedback for Electronic Throttle Control
The MC33887APVW is a monolithic H-Bridge power IC specifically designed for closed-loop DC motor control in automotive and industrial applications. This device integrates internal control logic, a charge pump, gate drive circuitry, and low RDS(ON) MOSFET outputs into a single 20-pin HSOP package, delivering a complete motor drive solution for engine and chassis control modules.
This driver operates over a wide supply voltage range of 5.0V to 28V, with limited performance capability up to 40V for transient conditions. It is capable of driving continuous DC load currents up to 5.0A, with active peak current limiting between 5.2A and 7.8A, protecting the device and the load from overcurrent events. The output loads can be pulse-width modulated at frequencies up to 10kHz, providing precise speed and torque control.
A key feature of this device is the load current feedback function, which outputs a proportional constant current (1/375th of the load current) suitable for direct monitoring by a microcontroller‘s A/D input. This enables sophisticated closed-loop torque and speed control strategies, as well as open-load detection, making it ideal for precision actuator applications.
The MC33887APVW includes comprehensive diagnostic and protection features. A Fault Status output pin reports undervoltage, short-circuit, and overtemperature conditions, allowing the system ECU to respond to fault events in real-time. TTL/CMOS-compatible inputs provide flexible control, while two disable inputs can force the H-Bridge outputs into a high-impedance tri-state. A low-power sleep mode reduces current draw to less than 50μA, optimizing power consumption in standby scenarios.
Qualified to AEC-Q100 automotive standards and specified for operation from -40°C to +125°C, this driver is the ideal choice for electronic throttle control (ETC), exhaust gas recirculation (EGR) valves, turbo flap actuators, and other safety-critical motor control applications in modern vehicles.