PMP30600-AH Reference Design

Texas Instruments

20-A automotive pre-regulator reference design


This reference design is a 100-W synchronous buck converter to supply automotive loads. The IC is LM5146-Q1 in fixed frequency operation at 250 kHz to ensure low noise operation. A resistor-capacitor (RC) snubber attenuates noise in the RF band to reduce radiated emissions. To reduce system EMI: the design is prepared to either synchronize other converters (output) or be externally synchronized (input).

  • Power stage withstands surge voltages up to 36 VpkEfficiency higher than 95% over a output current range of 5-A to 20-A  (at 14-V input voltage)Tight load regulation results in a low deviation (5 mV) of the output voltage over the whole range of the input voltageInput filter for minimizing conducted emissions is included
  • Automotive radio tuner
  • Automotive active noise cancellation
  • Automotive head unit
  • Automotive external amplifier
  • Rear seat entertainment
  • Telematics control unit
  • Automotive USB charge
  • Head-up display
  • Voltage conditioning module
  • Automotive media hub
  • Intelligent antenna module
  • Emergency call (eCall)
  • Vehicle to everything (V2X)
  • Automotive auxiliary display
  • Aftermarket head unit
  • Automotive cluster display
  • Smart telematics gateway
Product Categories
  • Power management