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TPIC44L03DB Datasheet

  • TPIC44L03DB

  • 4-CHANNEL SERIAL AND PARALLEL LOW-SIDE PRE-FET DRIVER

  • 269.57KB

  • 20頁(yè)

  • TI

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TPIC44L01, TPIC44L02, TPIC44L03
4-CHANNEL SERIAL AND PARALLEL LOW-SIDE PRE-FET DRIVER
SLIS062A
鈥?/div>
NOVEMBER 1996 鈥?REVISED SEPTEMBER 1997
D
D
D
D
D
D
D
4-Channel Serial-in Parallel-in Low-Side
Pre-FET Driver
Devices Are Cascadable
Internal 55-V Inductive Load Clamp and
V
GS
Protection Clamp for External Power
FETs
Independent Shorted-Load/Short-to-
Battery Fault Detection on All Drain
Terminals
Independent OFF-State Open-Load Fault
Sense
Over-Battery-Voltage Lockout Protection
and Fault Reporting
Under-Battery Voltage Lockout Protection
for the TPIC44L01 and TPIC44L02
D
D
D
D
D
D
D
Asynchronous Open-Drain Fault Flag
Device Output Can be Wire ORed with
Multiple Devices
Fault Status Returned Through Serial
Output Terminal
Internal Global Power-On Reset of Device
and External RESET Terminal
High-Impedance CMOS-Compatible Inputs
With Hysteresis
TPIC44L01 and TPIC44L03 Disables the
Gate Output When a Shorted-Load Fault
Occurs
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鈩?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
VCOMPEN
VCOMP
IN0
IN1
IN2
IN3
CS
SDO
SDI
SCLK
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
V
BAT
N/C
RESET
DRAIN0
GATE0
DRAIN1
GATE1
GATE2
DRAIN2
GATE3
DRAIN3
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
漏
1997, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

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