Smart Power Switch for Seat Heater Reference Design
TIDA-01184
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Key Document

Description

This reference design showcases the TPS1HA08-Q1 device, which is used to control an automotive seat heater. The system consists of a main board and heating element, which represents the resistive heating component found in automotive seat heaters. This system demonstrates the ability to independently control the temperature of each seat as well as provide robust diagnostics and protection to account for fault events. Applications include any type of controlled heating element such as seat heating, climate control, defrosting, glow plugs, and tank heaters.

Features
  • Actively Monitor and Control Resistive Load Heating Element
  • Fault Indication and Analog Sense Output for Accurate Load Current Sensing, Voltage Sensing, and Temperature Sensing
  • TLC59116-Q1 LED Status Indication
  • Open-Load and Short-to-Battery Detection

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Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD17577Q3A  30V, N ch NexFET MOSFET™, single SON3x3, 6.4mOhm  MOSFETs  Sample & Buy Not Available
LM74610-Q1  Zero iq reverse polarity protection smart diode controller  Power switches  Sample & Buy View Design Kits & Evaluation Modules
LMT84-Q1  Automotive Grade, 1.5V-Capable,10 uA Analog Output Temperature Sensor  Temperature sensors  Sample & Buy Not Available
PCF8574A  Remote 8-Bit I/O Expander for I2C-Bus  I2C  Sample & Buy Not Available
TLC59116-Q1  Automotive 16-Channel FM+ I2C-Bus Constant-Current LED Sink Driver  LED drivers  Sample & Buy Not Available
TPD6F002-Q1  Automotive 6-Channel EMI Filter for LCD Display Application  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
TPS1HA08-Q1  40-V, 8-mOhm, 1-Ch smart high-side switch  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS7B67-Q1  Automotive 450mA High-Voltage Ultra-Low-Iq Low-Dropout Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD17577Q3A VSONP (DNH)| 8 Download Download
LM74610-Q1 Download Download
LMT84-Q1 Download
PCF8574A Download Download
Download Download
Download -
Download Download
Download Download
Download Download
TLC59116-Q1 Download Download
TPS1HA08-Q1 Download Download
TPS7B67-Q1 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 3500 14 Sep 2018
Design files (6)
Title Type Size (KB) Date
PDF 54 14 Sep 2018
ZIP 1169 14 Sep 2018
PDF 239 14 Sep 2018
PDF 1146 14 Sep 2018
ZIP 1028 14 Sep 2018
PDF 421 14 Sep 2018

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