ICE2QR1080G第一代准谐振集成电源解决方案

infineon公司的CoolSET™-Q1系列(ICE2QRxx80Z)是第一代准谐准集成功率集成电路,其有源突发模式可使无负载时达到最低的待机功耗小于100mW,数字频率的降低有更好的整个系统效率,集成了带起动单元的800V雪崩强健的CoolMOS™,无铅镀铅,无卤模塑料以及RoHS兼容,VCC过压和欠压保护的自动重起模式,超温保护的自动重起模式,用于可调整输出过压保护和变压器短路绕组保护的闩锁模式,主要用在适配器/充电器,蓝光/DVD播放器,机顶盒和数字像框,以及服务器,PC,打印机,TV,家庭影院/音频系统,白色家电等.本文介绍了ICE2QR1080G产品亮点和主要特性,框图和应用电路,简化多输出反激转换器框图,60W演示板DEMO_5QSAG_60W1主要特性,电路图,材料清单和PCB设计图.

The CoolSET™-Q1 series (ICE2QRxx80Z) is the first generation of quasi-resonant integarted power ICs. It is optimized for off-line switch mode power supply applications such as LCD monitor, DVD R/W, DVD Combo, Blue-ray DVD, set top box, etc. Operting the MOSFET switch in quasi-resonant mode, lower EMI, higher efficiency and lower voltage stress on secondary diodes are expected for the SMPS. Based on the BiCMOS technology, the CoolSET™-Q1 series has a wide operation range (up to 25 V) of IC power supply and lower power consumption. It also offers many advantages such as: a quasi-resonant operation till very low load increasing the average system efficiency compared to other conventional solutions; the Active Burst Mode operation enables ultra-low power consumption at standby mode with small and controllable output voltage ripple.

ICE2QR1080G产品亮点:

 Active Burst Mode to reach the lowest standby power requirement<100 mW @ no load 
 Quasi resonant operation 
 Digital frequency reduction for better overall system efficiency 
 800 V avalanche rugged CoolMOS™ with startup cell 
 Pb-free lead plating, halogen free mold compound, RoHS compliant 

ICE2QR1080G主要特性:

 800 V avalanche rugged CoolMOS™ with built-in startup cell 
 Quasiresonant operation till very low load 
 Active burst mode operation for low standby input power (< 100 mW) 
 Digital frequency reduction with decreasing load for reduced switching loss 
 Built-in digital soft-start 
 Foldback point correction and cycle-by-cycle peak current limitation 
 Maximum on/off time limitation 
 Auto restart mode for VCC Overvoltage and Undervoltage protections 
 Auto restart mode for overload protection 
 Auto restart mode for overtemperature protection 
 Latch-off mode for adjustable output overvoltage protection and transformer short-winding protection 

ICE2QR1080G应用:

 Adapter/Charger, Blue Ray/DVD player, Set-top Box, Digital Photo Frame 
 Auxiliary power supply of Server, PC, Printer, TV, Home theater/Audio System, White Goods, etc

图1.ICE2QR1080G应用电路

图2.ICE2QR1080G框图

60W演示板DEMO_5QSAG_60W1

This document attempts to make a comparison between a quasi-resonant and fixed-frequency switching scheme typically used in a flyback topology. To aid the quantitative comparison, a 60 W demonstration board (P/N: DEMO_5QSAG_60W1) was modified to support both the quasi-resonant (ICE5QSAG) and fixed-frequency (ICE5ASAG) flyback controller.

For low output power applications, the flyback converter is the most widely used topology when galvanic isolation and/or multiple output are required because it has a low system cost and is easy to design. It is used as main power supply for lower-power appliances and devices (e.g. TVs, set-top boxes, chargers/adapters, etc.) and auxiliary power supplies for higher-power applications (e.g. air-con, PC power, server power, industrial SMPS, etc.). A simplified multi-output flyback converter block diagram is shown in Figure 3.


图3.简化多输出反激转换器框图

图4.DEMO_5QSAG_60W1顶视图

图5.DEMO_5QSAG_60W1底视图

图6.ICE5QSAG电路图

图7.ICE5ASAG电路图
DEMO_5QSAG_60W1材料清单:



图8.DEMO_5QSAG_60W1 PCB设计图:顶层

图9.DEMO_5QSAG_60W1 PCB设计图:底层
详情请见:
https://www.infineon.com/dgdl/Infineon-ICE2QR1080G-DS-v01_00-EN.pdf?fileId=5546d46253f6505701549aaf43e0750e
和https://www.infineon.com/dgdl/Infineon-Infineon-ApplicationNote_Quasi_resonant_and_fixed_frequency_flyback_comparison-AN-v01_00-EN.pdf?fileId=5546d46267354aa001673e54d82e5e90