MC33486 Datasheet, PDF (1/9 Pages) Motorola, Inc – Dual High Side Switch for H-Bridge Automotive Applications

MOTOROLA^{Freescale Semiconductor, Inc.}
Order Number: MC33486/D
Rev. 3.3, 06/2001
Semiconductor Technical Data
Advance Information
Dual High Side Switch for H-Bridge
Automotive Applications
This device is a dual high side switch for automotive applications which
incorporates a dual low side switch control feature. This device is designed to
monitor two low side switches for typical DC-motor control in an H-Bridge
configuration. It can be directly interfaced with a microcontroller for control and
diagnostic functions, is PWM capable and has a self-adjusted switching speed for
minimizing electromagnetic emission.
The High Side block incorporates two 15mΩ Rdson N-Channel power Mosfets
with senses and a control circuitry. Each output of this high side block is protected
against short to gnd and load shorts, and has over temperature detection with
hysteresis. It includes a current recopy feature for monitoring the load current. The
control circuitry also has an overvoltage detector which turns off the bridge and
protects the load in case of Vbat exceeding 28V.
The low side control block is able to drive 2 low sides switches in a H-bridge
configuration and protects them in case of short circuit. This, in combination with
the High side protection, fully protects the H-bridge from shorted loads, shorts to
Vbat and shorts to GND.
This device offers a very low quiescent current in standby mode.
•10 Amps Nominal DC Current
•35 Amps Maximum Peak Current
•DC Voltage from -0.3V to 40V
•Operating Voltage from 8 to 28V
•Overvoltage Detection : Switch Off when Vbat Exceed 28V
•High Side and Low Side Overcurrent protection
•Operating Junction Temperature - 40°C to 150°C
•Rdson 15mΩ max at 25C° per Mosfet
•DC to 30kHz PWM Capability
•Standby Mode with Low Standby Current
•Junction to Case Thermal Resistance : 2°C/W
•ESD protection 2kV
•Current Recopy to Monitor the High-Side Current
•Common diagnostic output
MC33486
DUAL HIGH SIDE SWITCH
FOR H-BRIDGE AUTOMO-
TIVE APPLICATIONS
SEMICONDUCTOR
TECHNICAL DATA
DH SUFFIX
HSOP20 Package
CASE 979-04
D²PAK
D²PAK
PIN ASSIGNMENT
Gnd 1
Cur R 2
IN1 3
GLS1 4
OUT1 5
OUT1 6
OUT1 7
OUT1 8
NC 9
NC 10
Vbat
21
21
Vbat
20 Wake
19 St
18 IN2
17 GLS2
16 OUT2
15 OUT2
14 OUT2
13 OUT2
12 NC
11 NC
5V
5V
MCU
I/O
Simplified Block Diagram and Typical Application
High Side Block
St
IN1
IN2
WAKE
Cur R
Control
GND
GLS1 OUT1
VBAT
GLS2 OUT2
GND
M
GND
Low Side Block
This document contains information on a new product. Specifications and
information herein are subject to change without_Fno_otic_re._{More Information On This Product,}
TM
© Motorola, Inc., 2001. All rights reserved.
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