PMP21549 Reference Design

Texas Instruments

75/150-W Flyback reference design for audio applications


This flyback reference design uses the cost effective LM5021 AC-DC Current-Mode PWM Controller. Universal line input is converted to a 28-V output. The supply is designed for sustained operation at 75-W and is rated for peaks up to 150-W. This range is ideal for the power requirements of audio signals. It is also tested for conductive EMI compliance.

  • 90-VAC - 265-VAC input to 28-V/5.5-A isolated outputUp to 89% efficiency at full load without the need for a synchronous rectifierData provided for conducted emissions tests
  • Wireless speaker
  • Smart speaker
Product Categories
  • Power management

End Equipment Reference Diagrams