6-Channel Serial-In/Parallel-In Low-side

Pre-FET Driver

Device Can Be Cascaded

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 TPIC46L01 and TPIC46L02

Asynchronous Open-Drain Fault Flag

Device Output Can Be Wire-ORed With

Multiple External Devices

Fault Status Returned Through Serial

Output Terminal

Internal Global Power-On Reset of Device

High-Impedance CMOS Compatible Inputs

With Hysteresis

TPIC46L01 and TPIC46L03 Disables the

Gate Output When a Shorted-Load Fault

Occurs

TPIC46L02 Transitions the Gate Output to a

Low-Duty Cycle PWM Mode When a

Shorted-Load Fault Occurs

description

The TPIC46L01, TPIC46L02, and TPIC46L03 are low-side predrivers that provide serial input interface and

parallel input interface to control six external field-effect transistor(FET) power switches such as offered in the

Texas Instruments 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 are

provided. Battery and output load faults provide real-time fault reporting to the controller. 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 channel GATE output to the

external FET. The serial input 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.