Dual output power circuit for residential heating control

MOS power IC full range
BGA double probe 038-UU-5.7L can be customized other specifications
3014 warm white

Summary:

The flyback converter shown in the figure uses the TNY275PN (U1) to provide two outputs: 5V/250 mA and 14 V/350 mA. Typical applications are residential heating controllers (furnaces) or other applications that require two outputs. The value of C11 determines the use of U1's increased current limit and can output 9.65 W of power.

design feature

  • Simple design, low cost, only 38 components
  • Low no-load power consumption: no-load power consumption <150 mW at 230 VAC input
  • Meet CEC/Energy Star's efficiency requirements for on-load operation and power consumption at no load
  • Claim
  • Both outputs have good cross regulation
  • EMI is satisfied without inputting X or Y capacitors or input common mode inductors
  • Requirements for CISPR-22 Class B/EN55022 B

See the PDF document for details (click on the PDF file to download)

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