4-Channel Serial-In Parallel-In Low-Side
Pre-FET Driver
Devices Are Cascadable
Internal 55-V Inductive Load Clamp and
VGS 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
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 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
voltage shutdown is provided. Each channel also
provides inductive-voltage-transient protection
for the external FET.
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.