Reference Designs
Tiny automotive SEPIC reference design
Texas Instruments
This tiny automotive SEPIC reference design contains a 6-W auxiliary power supply and is designed for a 12-V bias rail. The wide input accepts cranking down to 4.5 Vmin and surge up to 40 Vmax. Due to switching frequency of 2 MHz: the dual inductor is fairly small: resulting in excellent dynamic behavior. Controller LM5155x-Q1 is cost effective and its housekeeping currents are minimized. The optional input filter attenuates reflected ripple: and the SEPIC topology supports fine EMI behavior by continuous input current.
Features
- Converter can step up and down the input voltageOperates down to 4.5 V for automotive crankingCost effective due to 2-layer printed circuit board with single-side assemblyTransistor footprint accepts two different packages for more flexibility in transistor choice
Applications
- Rear light
Product Categories
- Power management
End Equipment Reference Diagrams
Application Area
End Equipment
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