MC33931 | H-Bridge Motor Driver

Overview

The NXP^® MC33931 is a monolithic H-Bridge power IC in a robust thermally enhanced package, designed primarily for automotive electronic throttle control, but is applicable to any low-voltage DC servo motor control application within the current and voltage limits stated in this specification.

The MC33931 H-bridge is able to control inductive loads with currents up to 5.0A peak
RMS current capability is subject to the degree of heatsinking provided to the device package. Internal peak-current limiting (regulation) is activated at load currents above 6.5A ±1.5A
Output loads can be pulse-width modulated at frequencies up to 11 kHz
Processor Expert^® component for medium voltage H-Bridge products enables rapid embedded application development.

Features

8.0V to 28V continuous operation (transient operation from 5.0V to 40V)
235mΩ maximum RDS(ON) @ Tj=150°C (each H-Bridge MOSFET)
3.0V and 5.0V TTL / CMOS logic compatible inputs
Over-current limiting (regulation) via internal constant-off-time PWM
Output short-circuit protection (short to VPWR or GND)
Temperature-dependant current-limit threshold reduction
All inputs have an internal source/sink to define the default (floating input) states
Sleep mode with current draw < 50μA (each half with inputs floating or set to match default logic states)

Features

8.0V to 28V continuous operation (transient operation from 5.0V to 40V)
235mΩ maximum RDS(ON) @ Tj=150°C (each H-Bridge MOSFET)
3.0V and 5.0V TTL / CMOS logic compatible inputs
Over-current limiting (regulation) via internal constant-off-time PWM
Output short-circuit protection (short to VPWR or GND)
Temperature-dependant current-limit threshold reduction
All inputs have an internal source/sink to define the default (floating input) states
Sleep mode with current draw < 50μA (each half with inputs floating or set to match default logic states)