Automotive high side dimming rear light reference design

The TI design is for automotive high side dimming rear light, which uses BCM to supply the rear light. In the TI design the high side driver TPS1H100-Q1 is used to output PWM supply with different duty cycle. Linear LED drivers TPS92630-Q1 and TPS92638-Q1 are used to drive the LEDs in constant current.

Features

• High side dimming
• Wide input voltage range: 12V Typical, 9-16V Continuous
• Programable current limit high side driver
• LED Open circuit,  LED short circuit, LED driver output short to battery, device thermal shut down protection
• Thermal Foldback function for LED driver
• One fail all fail function

Parts Include

TLC555-Q1      Automotive LinCMOS TIMER 
TPS1H100-Q1  40V/100mOhm Single Channel Smart High Side Switch 
TPS7B6950-Q1  Automotive High-Voltage Ultra-Low IQ Low-Dropout Regulator/Fixed 5-V Output Voltage
TPS92630-Q1  Automotive Three-Channel Linear LED Driver with Analog and PWM Dimming
TPS92638-Q1  Automotive 8-Channel Linear LED Driver With PWM Dimming 

Learn more by downloading the reference design below