Infineon Technologies ICE5QR2270AZ

Description

This document is a reference design for a 12 W auxiliary SMPS for a refrigerator with the latest fifth-generation Infineon QR CoolSET™ ICE5QR2270AZ. The power supply is designed with a universal input compatible with most geographic regions and isolated output (+12 V/1 A) on a single-layer PCB, as typically employed in most home appliances.

Features

• Novel quasi-resonant switching scheme
• Rapid and adjustable start-up with cascode configuration
• 2 level selectable active burst mode level
• Built-in digital soft-start
• Cycle by cycle peak current limitation
• Digital frequency reduction with decreasing load for higher efficiency
• Adjustable line input over-voltage and brown IN/OUT protection
• VCC and CS pin short to ground protection
• OLP, output short, output over-voltage, OTP with hysteresis and VCC over/under voltage protection
• Auto-restart for all protection features

Typical applications

• Offline aux SMPS for server, PC power, aircon, refrigerator and audio / Offline main SMPS for adapter, set-top-box, water purifier, TV, industrial SMPS and POE

More information

• Datasheet
• IC product information