MC34932 Datasheet, PDF (1/24 Pages) Freescale Semiconductor, Inc – Dual 5.0 A H-Bridge

Freescale Semiconductor
Advance Information
Document Number: MC34932
Rev. 2.0, 10/2013
Dual 5.0 A H-Bridge
The 34932 is a monolithic H-Bridge Power IC in a robust thermally
enhanced package. The 34932 has two independent monolithic
H-Bridge Power ICs in the same package. They are 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.
Each H-Bridge in the 34932 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. Two independent disable inputs are provided to
force the H-Bridge outputs to tri-state (high-impedance off state).
Features
• 5.0 to 28 V continuous operation (transient operation from 5.0 to
40 V)
• 235 mΩ maximum R_DS(ON) at 150 °C (each H-Bridge MOSFET)
• 3.0 and 5.0 V TTL / CMOS logic compatible inputs
• Output short-circuit protection (short to VPWR or GND)
• Overcurrent limiting (regulation) via internal constant-off-time
PWM
• Temperature dependant current limit threshold reduction to allow
for continuous operation without shutdown
• All inputs have an internal source/sink to define the default
(floating input) states
• Sleep mode with current draw < 12 µA (each half with inputs
floating or set to match default logic states)
V_DD
34932
Industrial
H-BRIDGE
EK SUFFIX (PB-FREE)
98ASA99334D
54-PIN SOICW-EP
ORDERING INFORMATION
Device
(Add R2 Suffix for
Tape and Reel)
Temperature
Range (T_A)
Package
MC34932EK
-40 to 85 °C
54 SOICW-EP
V_PWR
MCU
V_DD
34932
SFA
VPWRA
FBA
CCPA
OUT1
IN1
IN2
D1
EN/D2
IN3
IN4
D3
EN/D4
FBB
OUT2
PGNDA
AGNDA
VPWRB
CCPB
OUT3
SFB
PGNDB
AGNDB
OUT4
MOTOR
V_PWR
MOTOR
Figure 1. MC34932 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.