MC34931 Datasheet, PDF (1/25 Pages) Freescale Semiconductor, Inc – 34931 Industrial

Freescale Semiconductor
Advance Information
Document Number: MC34931
Rev. 2.0, 10/2013
5.0 A H-bridge
The 34931 is a monolithic H-Bridge Power IC in a robust thermally
enhanced package. It is designed for any low voltage DC servo motor
control application within the current and voltage limits stated in this
specification. This device is powered by SMARTMOS technology.
The 34931 H-Bridge is able to control inductive loads with currents
up to 5.0 A 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 6.5 A ±1.5 A.
Output loads can be pulse-width modulated (PWM-ed) at frequencies
up to 11 kHz. A load current feedback feature provides a proportional
(0.24% of the load current) current output suitable for monitoring by a
microcontroller’s A/D input. A Status flag output reports undervoltage,
overcurrent, and overtemperature fault conditions.
Two independent inputs provide polarity control of two half-bridge
totem-pole outputs. The disable inputs are provided to force the H-
bridge outputs to tri-state (high-impedance off-state).
34931
Industrial
H-BRIDGE
EK SUFFIX (PB-FREE)
98ARL10543D
32-PIN SOICW-EP
Features
• 5.0 to 28 V continuous operation (transient operation from 5.0 to
40 V)
• 235 mΩ maximum R_DS(ON) @ T_J=150 °C (each H-bridge
MOSFET)
• 3.0 V and 5.0 V TTL / CMOS logic compatible inputs
• Overcurrent 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 < 12 µA
ORDERING INFORMATION
Device
(Add R2 Suffix for
Tape and Reel)
Temperature
Range (T_A)
Package
MC34931EK
-40 to 85 °C
32 SOICW-EP
V_DD
V_PWR
MCU
34931
SF
VPWR
FB
CCP
OUT1
IN1
IN2
D1
EN/D2
OUT2
PGND
AGND
MOTOR
Figure 1. MC34931 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2013. All rights reserved.