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EMC Compliant Automotive Daytime Running Lights and Position Lights Reference Design

TIDA-01375

Overview

This reference design details an automotive daytime running light (DRL) and position light solution. The TPS92830-Q1 linear LED controller used in this design is powered directly from the car battery, thus allowing you to use the same LED for both functions. This reference design also has good EMC performance and provides comprehensive protection and diagnostics.

characteristic

●Car battery power supply
● Complies with CISPR 25 conducted and radiated emission standards and passed ISO11452-4 BCI testing
● DRL/position light reuse possible by using the device’s internal PWM generator
● LED string open circuit, short to ground and battery short circuit diagnostics and automatic recovery
● The faulty bus can be configured as "joint failure" or "only the failed channel is closed"
● LED overheating protection

Backlog Impt notice changes Backlog Impt notice changes end

Blockdiagram

Design Files

Documentation

EMC Compliant Automotive Daytime Running Lights and Position Lights Reference Design

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-08-07 10:21:24

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