Infineon Technologies ICE5GSAG | Demoboard DEMO_5GSAG_60W1

Description

This is an engineering report for a 60 W 19 V demo board designed in a fixed frequency flyback converter topology using the fifth-generation FFC, ICE5GSAG, and a CE series of HV CoolMOS™, IPA80R650CE. The demo board is operated in Discontinuous Conduction Mode (DCM) and is running at 125 kHz fixed switching frequency. The frequency reduction with soft-gate driving and frequency jittering offers lower EMI and better efficiency from light loads up to 50% load. The selectable Active Burst Mode (ABM) power enables ultra-low power consumption. In addition, numerous adjustable protection functions have been implemented in ICE5GSAG to protect the system and customize the IC for the chosen application. In case of failure modes, like line over-voltage, V CC over-/under-voltage, open control-loop or over-load, over-temperature, V CC short-to- GND and CS short-to-GND, the device enters protection mode. By means of the cycle-by-cycle peak current Limitation (PCL), the dimensions of the transformer and the current rating of the secondary diode can both be optimized. Thus, a cost-effective solution can easily be achieved. The target applications of ICE5GSAG are either auxiliary power supplies for white goods, PCs, servers and TVs, or enclosed adapters for Blu-ray players, set-top boxes, games consoles, etc.

Features

• Flyback topology with single isolated output
• 125kHz switching frequency with discontinuous current mode design
• Wide-range input from 85~300VAC with line over-voltage protection at 320VAC
• Output #1: 19V/3.16A

Typical applications

• Offline SMPS, adapter, main power for set-top-box, water/air purifier and TV, / auxiliary power for air conditioning, refrigerator, server, PC power and audio

More information

• Datasheet
• IC product information