MC33486 Motorola, MC33486 Datasheet

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MC33486

Manufacturer Part Number
MC33486
Description
Dual High Side Switch
Manufacturer
Motorola
Datasheet

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Dual High Side Switch for H-Bridge
Automotive Applications
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.
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.
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.
Advance Information
MOTOROLA
Semiconductor Technical Data
This document contains information on a new product. Specifications and
information herein are subject to change without notice.
© Motorola, Inc., 2001. All rights reserved.
This device is a dual high side switch for automotive applications which
The High Side block incorporates two 15mΩ Rdson N-Channel power Mosfets
The low side control block is able to drive 2 low sides switches in a H-bridge
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
MCU
5V
I/O
5V
High Side Block
St
IN1
IN2
WAKE
Cur R
Freescale Semiconductor, Inc.
GND
For More Information On This Product,
Simplified Block Diagram and Typical Application
Control
Go to: www.freescale.com
Low Side Block
GLS1
GND
OUT1
GLS2
GND
OUT2
DUAL HIGH SIDE SWITCH
FOR H-BRIDGE AUTOMO-
D
2
PAK
TIVE APPLICATIONS
Cur R
GLS1
VBAT
OUT1
OUT1
OUT1
OUT1
M
Gnd
IN1
NC
NC
MC33486
PIN ASSIGNMENT
Order Number: MC33486/D
SEMICONDUCTOR
TECHNICAL DATA
1
2
3
4
5
6
7
8
9
10
D
2
PAK
Vbat
Vbat
21
21
HSOP20 Package
Rev. 3.3, 06/2001
CASE 979-04
DH SUFFIX
20
19
18
17
16
15
14
13
12
11
Wake
St
IN2
GLS2
OUT2
OUT2
OUT2
OUT2
NC
NC
TM

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MC33486 Summary of contents

Page 1

... Simplified Block Diagram and Typical Application Control GND GLS1 OUT1 GND Low Side Block For More Information On This Product, Go to: www.freescale.com Order Number: MC33486/D Rev. 3.3, 06/2001 MC33486 DUAL HIGH SIDE SWITCH FOR H-BRIDGE AUTOMO- TIVE APPLICATIONS SEMICONDUCTOR TECHNICAL DATA DH SUFFIX HSOP20 Package ...

Page 2

... MC33486 Description The backside TAB is connected to the power supply of the MC33486DH. In addition to its supply function, the tab contributes to the thermal behaviour of the device by conducting the heat from the switching MOSFET to the printed circuit board. Pins 5, 6,7,8 are the source of the output1 15mOhm High-side MOSFET1 ...

Page 3

... High Side Drain to Source On Resistance High Side Drain to Source On Resistance High Side Body Diode Voltage (Out to Vbat) Low Side Gate output Voltage For More Information On This Product, Dual High Side Switch for H-Bridge Automotive Applications MC33486 Symbol Value Vbat - 0 Vout - 0 ...

Page 4

... Gate Low Side Rise Time Gate Low Side Fall Time HIGH SPEED MODE SWITCHING CHARACTERISTICS (pulse<280µs) For More Information On This Product, Dual High Side Switch for H-Bridge Automotive Applications MC33486 Characteristics Symbol Min. Typ. Max. Vil 1 ...

Page 5

... When a short to Vbat of one of the Low sides occurs, both outputs are opened to prevent the motor from running. Once the Low side overcurrent is removed, the input INx of the half bridge wich experienced the fault has to be reset in order to recover the normal operation mode. For More Information On This Product, Dual High Side Switch for H-Bridge Automotive Applications MC33486 Characteristics Symbol Min. ...

Page 6

... See the Functional Truth Table for all faults that are reported on this signal pin. This pin is an open drain structure and needs an external pull up resistor. Go to: www.freescale.com Sense Power 1 5000 I copy I load + Cur R MC33486 R gnd Logic gnd 6 ...

Page 7

... VPR 215-219° Convection 220°C +5/-0°C For More Information On This Product, Dual High Side Switch for H-Bridge Automotive Applications MC33486 DEVICE DESCRIPTION The maximum peak temperature during the soldering process should not exceed 220°C (+5°C/-0°C). The time at maximum temperature should range from 10 to 40s max ...

Page 8

... For More Information On This Product, Dual High Side Switch for H-Bridge Automotive Applications MC33486 2 PAK or DPAK package. Thermal resistance junction to case is approx. 2°C/W. The Go to: www ...

Page 9

... Motorola, Inc. Motorola, Inc. is JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, 3-20-1, Minami-Azabu, Minato-ku, Tokyo 106-8573 Japan. 81-3-344-3569 ASIA / PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2, Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. 852-26668334 Go to: www.freescale.com MC33486/D ...

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