TPIC7218-Q1 Datasheet, PDF (1/9 Pages) Texas Instruments – Power Controller and Sensor ASIC for Braking Applications

TPIC7218-Q1
www.ti.com
SLDS182 – AUGUST 2010
Power Controller and Sensor ASIC for Braking Applications
Check for Samples: TPIC7218-Q1
1 Introduction
The TPIC7218 is an antilock brake controller designed for use in harsh automotive environments,
requiring few external components. It has eight high current low-side drivers for use with solenoid valves,
four configurable wheel speed sense inputs capable of handling both Intelligent and Active sensors, and
high-side gate drivers for controlling two external N-channel MOSFETs for use with a pump motor and
master relay. Besides this main functionality, the TPIC7218 also has drivers for warning lamps, a
high-side gate driver for controlling an external N-channel MOSFET for use with a relay, K-line driver, and
various I/O pins for other common antilock braking needs. The TPIC7218 boosts an internal charge-pump
allowing the high-side drivers to use inexpensive N-channel MOSFETs. The digital I/O pins can be
configured for both 5 V and 3.3 V levels for easy connection to any microprocessor. The TPIC7218 uses
standard SPI protocol for communication.
For the full version of this document, please contact [e-mail].
1.1 Features
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• PWM Low-Side Drivers
– 4 PWM Low-Side Driver Outputs
– Current Limitation
– Thermal Protection: T_J = 185°C (Min)
– Open-Load Detection
– Energy Capability: 30 mJ at T_J = 150°C
– Clamp Voltage: 40 V
– Low RDSon: 0.3 Ω (Max) at T_J = 150°C
• Digital Low-Side Drivers
– 4 Digital Low-Side Driver Outputs
– Current Limitation
– Thermal Protection: T_J = 185°C (Min)
– Open-Load Detection
– Energy Capability: 50 mJ at T_J = 150°C
– Clamp Voltage: 40 V
– Low R_DSon: 0.2 Ω (Max) at T_J = 150°C
• Dual High-Side Power Drivers
– Direct Input Control
– PWM Capability
– Load Dump (overvoltage) Detection
– Programmable over current detection
– Programmable short-circuit Protection
– Load Leakage Detection
– Fault detection over SPI
• Wheel Speed Sensor Interface
– Compatible with Intelligent and Active Wheel
Speed Sensors
– 4 High-Side Switches with Short Circuit
Protection
– 4 Low-Side Switches with Short Circuit
Protection
– 2 High Voltage Low-Side Output Drivers
– 4 Digital Outputs to Indicate the Speed
– Integrated Data Decoder for Intelligent Wheel
Speed Sensors
• Open-Drain Warning Lamp Drivers
– 2 High Voltage Drivers
– Thermal Protection With Hysteresis
– Current Limitation
– T_J = 185°C (Min)
– R_DSon: 4 Ω at T_J = 150°C
– Clamp Voltage: 40 V
• Other Features
– K-LINE Transceiver
– 3.3-V or 5-V Compatible Digital IO
– Internal 3.3V Regulator
– Internal Charge Pump
– 1 Low Voltage open-drain warning lamp
driver
– Full Duplex SPI Interface
– Watchdog input with open-drain fault
reporting for safety
– "Pb-Free"(1) ASIC
– Automotive Temperature Range of –40°C to
125°C
– Qualified based on AEC-Q100 REV G
– Compliant with CISPR 25 NB Class 5 for
Conducted and Radiated Emissions
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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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated