TPIC44L01 Datasheet, PDF (1/20 Pages) Texas Instruments – 4-CHANNEL SERIAL AND PARALLEL LOW-SIDE PRE-FET DRIVER

TPIC44L01, TPIC44L02, TPIC44L03
4-CHANNEL SERIAL AND PARALLEL LOW-SIDE PRE-FET DRIVER
D 4-Channel Serial-in Parallel-in Low-Side
Pre-FET Driver
D Devices Are Cascadable
D Internal 55-V Inductive Load Clamp and
V_GS Protection Clamp for External Power
FETs
D Independent Shorted-Load/Short-to-
Battery Fault Detection on All Drain
Terminals
D Independent OFF-State Open-Load Fault
Sense
D Over-Battery-Voltage Lockout Protection
and Fault Reporting
D Under-Battery Voltage Lockout Protection
for the TPIC44L01 and TPIC44L02
SLIS062A – NOVEMBER 1996 – REVISED SEPTEMBER 1997
D Asynchronous Open-Drain Fault Flag
D Device Output Can be Wire ORed with
Multiple Devices
D Fault Status Returned Through Serial
Output Terminal
D Internal Global Power-On Reset of Device
and External RESET Terminal
D High-Impedance CMOS-Compatible Inputs
With Hysteresis
D TPIC44L01 and TPIC44L03 Disables the
Gate Output When a Shorted-Load Fault
Occurs
D TPIC44L02 Transitions the Gate Output to a
Low-Duty-Cycle PWM Mode When a
Shorted-Load Fault Occurs
description
The TPIC44L01, TPIC44L02, and TPIC44L03 are
low-side predrivers that provide serial and parallel
input interfaces to control four external FET power
switches such as offered in the TI™ TPIC family of
power arrays. These devices are designed
primarily for low-frequency switching, inductive
load applications such as solenoids and relays.
Fault status for each channel is available in a
serial-data format. Each driver channel has
independent off-state open-load detection and
on-state shorted-load/short-to-battery detection.
Battery overvoltage and undervoltage detection
and shutdown is provided on the TPIC44L01/L02.
On the TPIC44L03 driver, only over-battery-volt-
age shutdown is provided Each channel also
provides inductive-voltage-transient protection
for the external FET.
DB PACKAGE
(TOP VIEW)
FLT ₁
VCOMPEN ₂
VCOMP ₃
IN0 4
IN1 5
IN2 6
IN3 7
CS 8
SDO 9
SDI 10
SCLK 11
V_CC 12
24 ^V_BAT
23 ^N/C
22 ^RESET
21 DRAIN0
20 GATE0
19 DRAIN1
18 GATE1
17 GATE2
16 DRAIN2
15 GATE3
14 DRAIN3
13 GND
These devices provide control of output channels through a serial input interface or a parallel input interface.
A command to enable the output from either interface enables the respective channels gate output to the
external FET. The serial interface is recommended when the number of signals between the control device and
the predriver must be minimized and the speed of operation is not critical. In applications where the predriver
must respond very quickly or asynchronously, the parallel input interface is recommended.
For serial operation, the control device must transition CS from high to low to activate the serial input interface.
When this occurs, SDO is enabled, fault data is latched into the serial interface, and the fault flag is refreshed.
Data is clocked into the serial registers on low-to-high transitions of SCLK through SDI. Each string of data must
consist of at least four-bits of data. In applications where multiple devices are cascaded together, the string of
data must consist of4 bits for each device. A high data bit turns the respective output channel on and a low data
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
TI is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1997, Texas Instruments Incorporated
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