EMC-Compliant Automotive Daytime Running Light and Position Light Reference Design
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Key Document


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

  • Automotive Battery Supply
  • Meets CISPR 25 Conducted and Radiated Emission Standards and Passed ISO11452-4 BCI Test
  • DRL/Position Light Reuse by Using Device Internal PWM Generator
  • LED String Open Circuit, Short to Ground and Short to Battery Diagnostics With Auto Recovery
  • Fault Bus Configurable as One-Fails–All-Fail or Only-Failed-Channel-Off
  • LED Thermal Protection

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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 (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS92830-Q1  Automotive 3-Channel High-side High-Power Constant-Current Linear LED Controller  LED drivers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS92830-Q1 Download Download

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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Technical Documents

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Datasheet (1)
Title Type Size (KB) Date
PDF 2351 16 Jan 2018
User guides (1)
Title Type Size (KB) Date
PDF 1944 14 Nov 2017
Design files (6)
Title Type Size (KB) Date
ZIP 1378 27 Nov 2017
ZIP 488 27 Nov 2017
PDF 662 27 Nov 2017
PDF 94 27 Nov 2017
PDF 53 27 Nov 2017
PDF 140 27 Nov 2017

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