
SLDS182 – AUGUST 2010
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1.2
Description
The TPIC7218 is an antilock braking controller capable of directly driving eight solenoid valves with
internal high-current low-side drivers. Low-side drivers configured for digital control do not require external
voltage clamps. The TPIC7218 has gate drive capability for two high-side N-Channel MOSFETs that can
be used to drive a pump motor and power to all solenoids. The TPIC7218 provides a fault tolerant
interface for both Intelligent and Active wheel speed sensors to an external microprocessor. The TPIC218
can be used with either 3.3 or 5.0 V microprocessors and utilizes a standard SPI interface. The TPIC7218
has two internal open-drain warning lamp drivers that can be pulled up to battery voltage, as well as one
low voltage driver. An internal state machine monitors a watchdog input and reports faults on a warning
lamp pin and SPI register. A K-Line transceiver is also included. A multitude of safety and fault monitoring
functionality supervise both system and TPIC7218 circuits. Faults must be polled and reset over SPI. The
TPIC7218 is designed for use in harsh automotive environments, capable of withstanding high operating
temperatures and electrically noisy signals and power. Short-to-ground, short-to-battery, and open-load
conditions are tolerated and monitored. The TPIC7218 also exhibits outstanding Electro-Magnetic
Compatibility (EMC) performance.
ORDERING INFORMATION
ORDERABLE PART
TA
PACKAGE(1)
TOP-SIDE MARKING
NUMBER
–40°C to 125°C
PowerPAD S-PQFP – G80
Reel of 1000
TPIC7218QPFRQ1
TPIC7218
(1)
“Pb-Free” is defined to be compliant with the current RoHS requirements for all 6 substances, including the requirement that lead not
exceed 0.1% by weight in homogeneous materials unless exempt. Where designed to be soldered at high temperatures, TI "Pb-Free"
and "RoHS Compliant" products are suitable for use in specified lead-free processes.
2
Introduction
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