MC34932 Dual 5A H-bridge power integrated circuit0 pages

Analog Solutions—Robust Reliable Performance

MC34932
Dual 5A H-bridge power integrated circuit
Overview
The MC34932 is a monolithic dual H-bridge power IC in a robust thermally enhanced package,
one that provides ultra-low thermal resistance. Automatic thermal back-off ensures high
availability operation in demanding high-current, high-temperature industrial applications. The
MC34932 has two independent H-bridge power ICs in the same package. They are designed
primarily for low-voltage DC brushed and stepper motor control applications.
Each H-bridge in the MC34932 is able to control inductive loads with currents up to 5.0 A

Target Applications
•t Dual DC brushed motor drive
•t DC brushed and stepper motor
driver
•t 3D printers

peak. RMS current capability is subject to the degree of heat sinking provided to the device

•t Factory automation

package. Internal peak-current limiting (regulation) is activated at load currents above 6.5 A ±

•t POS, ATM, vending kiosks

1.5 A. The MCU can pulse width modulate the load through the MC34932 at frequencies up to
20 kHz. A load current feedback feature provides a proportional (0.24 percent of the load

•tRobotics

current) current output suitable for monitoring by a microcontroller’s A/D input. A status flag

•t Medical pump and valves

output reports under-voltage, over-current and over-temperature fault conditions.

•t Ticketing, toll systems

Independent inputs provide polarity control of each half-bridge totem-pole output. The disable
inputs are provided to force the H-bridge outputs to tri-state (high-impedance off-state).

Simplified Applications Drawing