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Document Number: MC20XS4200
Rev. 5.0, 11/2013
Freescale Semiconductor
Advance Information
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2012-2013. All rights reserved.
Dual
24 V,
20 mOhm
High Side
Switch
The 20XS4200 device is part of a 24 V dual high side switch product
family with integrated control, and a high number of protective and
diagnostic functions. It has been designed for truck, bus, and industrial
applications. The low R
DS(ON)
channels (<20 m) can control different
load types; bulbs, solenoids, or DC motors. Control, device
configuration, and diagnostics are performed through a 16-bit serial
peripheral interface (SPI), allowing easy integration into existing
applications. This device is powered by SMARTMOS technology
Both channels can be controlled individually by external/internal
clock signals, or by direct inputs. Using the internal clock allows fully
autonomous device operation. Programmable output voltage slew-
rates (individually programmable) helps improve electromagnetic
compatibility (EMC) performance. To avoid shutting off the device upon
inrush current, while still being able to closely track the load current, a
dynamic overcurrent threshold profile is featured. Switching current of
each channel can be sensed with a programmable sensing ratio.
Whenever communication with the external microcontroller is lost, the
device enters a Fail-safe operation mode, but remains operational,
controllable, and protected.
Features
• Two fully-protected 20 m (@ 25 °C) high side switches
•Up to 3.0 A steady-state current per channel
• Separate bulb and DC motor latched overcurrent handling
• Individually programmable internal/external PWM clock signals
• Overcurrent, short-circuit, and overtemperature protection with
programmable autoretry functions
• Accurate temperature and current sensing
• OpenLoad detection (channel in OFF and ON state), also for LED
applications (7.0
mA typ.)
• Normal operating range: 8.0 - 36 V, extended range: 6.0 - 58 V
•3.3 V and 5.0 V compatible 16-bit SPI port for device control,
configuration and diagnostics at rates up to 8.0
MHz
Figure 1. Simplified Application Diagram
FK SUFFIX (PB-FREE)
98ASA00428D
23 PIN PQFN
(12 X12 mm)
20XS4200
HIGH SIDE SWITCH
MCU
V
DD
CLOCK
FSB
SCLK
CSB
SO
RSTB
SI
IN0
IN1
CSNS
GND
VDD VPWR
HS0
HS1
LOAD
I/O
SCLK
CSB
SI
I/O
SO
I/O
I/O
A/D
GND
LOAD
M
CONF0
CONF1
FSOB
I/O
A/D SYNC
I/O
20XS4200
V
DD
V
PWR
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