National's Chris Richardson talks about the challenges of automotive LED lighting and investigates solutions. Covered in this video are:
- Challenges of automotive electrical systems including:
- Interior and backlighting
- Single-chain series arrays
- Series-parallel arrays
- Architecture & tradeoffs
- Advantages of using LED drivers versus standard DC-DC converters
- Comparison of buck, boost, buck-boost, SEPIC, and flyback topologies
- Exterior lighting
- The "floating" buck boost
- SEPIC regulators in automotive
- Remote LED arrays and 2-wire PWM dimming
- Reducing wiring harness costs
- Using the LM340x, LM340xHV, LM342x, and LM3431 products in automotive lighting applications
automotive LED lighting, interior lighting, backlighting for dashboard displays and gauges, exterior lighting, auto grade, AECQ, load dump, cold crank, high beam, low beam, headlight, two-wire PWM dimming, 2-wire PWM dimming