REF_5QR1680BG_30W1

Overview

30 W high efficiency auxiliary power supply for refrigerator

The REF_5QR1680BG_30W1 is an auxiliary power supply reference design based on Infineon’s 5th generation quasi-resonant CoolSET™ family (ICE5QR1680BG) configured in a flyback topology.

The power supply supports an input range up to 264 VAC with 15 V/0.15 A, 12 V/2.2 A and 5 V/0.2 A output. With an optional AC crossing detection circuitry couple to the secondary side for MCU processing, it allows the designer to control an AC motor with ease. Likewise, the MCU on the secondary side is able to turn OFF the LDO on the primary side to improve the performance of standby power.

Summary of Features

  • Universal input 85~264 VAC
  • Output #1: 15 V/0.15 A
  • Output #2: 12 V/2.2 A
  • Output #3: 5 V/0.2 A
  • > 85 % full-load efficiency @ 230 VAC
  • Optional AC zero crossing detection circuitry
  • Optional ON/OFF control of LDO at primary side

Benefits

  • Multi-output support for IPM gate driver, relay, MCU, and miscellaneous biasing needs
  • High efficiency design with synchronous rectification and DC-DC at secondary side
  • Ease of interface and/or control AC motor with AC zero crossing detection circuitry
  • Low standby with the ability to turn off LDO at primary side
  • Robust operation thanks to an integrated 800 V MOSFET

Potential Applications

List of Components

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