原标题：Infineon ICE5QR2270AZ 33W超宽(三相)输入电压电源解决方案

　　infineon公司的ICE5QR2270AZ是准谐振(Quasi-Resonant)CoolSET™第五代集成功率IC,单封装内两个别单独芯片:控制器和HV MOSFET,能降低EMI和提高效率.工作电压10 ~ 25.5 V,主要用在家用电器以及白色家电,TV,PC和服务器,蓝光播放器,机顶盒和LCD/LED监视器的辅助电源.本文介绍了ICE5QR2270AZ主要特性,框图,应用框图以及采用ICE5QR2270AZ和IPD80R2K4P7的33W评估板EVAL_5QR2270AZ_33W1主要特性和指标,电路图,材料清单和变压器,PCB设计图.

　　The Quasi-Resonant CoolSET™- (ICE5QRxxxxAx) is the 5th generation of Quasi-Resonant integrated power IC optimized for off-line switch power supply in cascode configuration. It is housed in single package with 2 separate chips; one is controller chip and other is HV MOSFET chips. The IC can achieve lower EMI and higher efficiency with improved digital frequency reduction through the proprietary novel Quasi-Resonant operation. The enhanced Active Burst Mode enables flexibility in standby power range selection. The product has a wide operation range (10 ~ 25.5 V) of IC power supply and lower power consumption. The numerous protection functions including the robust line protection (both input OVP and brownout) to support the protections of the power supply system in failure situations. All of these make the CoolSET™ (ICE5QRxxxxAx) series an outstanding integrated power device in Quasi-Resonant flyback converter in the market.

　　ICE5QR2270AZ主要特性:

　　 Integrated 700 V/800 V avalanche rugged CoolMOS™

　　 Minimum switching frequency difference between low & high line for higher efficiency & better EMI

　　 Enhanced Active Burst Mode with selectable entry and exit standby power

　　 Active Burst Mode to reach the lowest standby power <100 mW

　　 Fast startup achieved with cascode configuration

　　 Digital frequency reduction up to 10 zero crossings

　　 Built-in digital soft start

　　 Cycle-by-cycle peak current limitation

　　 Maximum on/off time limitation to avoid audible noise during start up and power down

　　 Robust line protection with input OVP and brownout

　　 Auto restart mode protection for VCC Over Voltage, VCC Under Voltage, Over load/Open Loop, Output Over Voltage, Over Temperature and CS (Current Sense) short to GND

　　 Limited charging current for VCC short to GND

　　 Pb-free lead plating, halogen free mold compound, RoHS compliant

　　ICE5QR2270AZ应用:

　　 Auxiliary power supply for Home Appliances/white Goods, TV, PC & Server

　　 Blu-ray player, Set-top box & LCD/LED Monitor

　　图1.ICE5QR2270AZ框图

　　图2.ICE5QR2270AZ应用框图

　　采用ICE5QR2270AZ和IPD80R2K4P7的评估板EVAL_5QR2270AZ_33W1

　　This document is an engineering report that describes a 33 W, 24 V ultra-wide (three-phase) input-range off-line flyback converter using the fifth-generation Infineon QR CoolSET™ (ICE5QR2270AZ) and a HV CoolMOS™ P7 series (IPD80R2K4P7). This offers high-efficiency, low-standby power with selectable entry and exit standby power option, wider VCC operating range with fast start-up, robust line protection with input Over Voltage Protection (OVP) and brown-out and various protection modes for a highly reliable system.

　　This document describes a universal 33 W, 24 V ultra-wide input voltage range power supply module. It is typically used as housekeeping power supply in professional SMPS. Typically driven from the bulk capacitor after any PFC stage or from the bulk after a three-phase rectifier, any DC input voltage from 190 V DC to 790 V DC may be applied to this board. The improved digital frequency reduction with proprietary QR operation offers lower EMI and higher efficiency for a wide AC range by reducing the switching frequency difference between low- and high-line. The enhanced Active Burst Mode (ABM) power enables flexibility in standby power operation range selection and QR operation during ABM. As a result, the system efficiency over the entire load range is significantly improved compared to a conventional free-running QR converter implemented with only maximum switching frequency limitation at light load. In addition, numerous adjustable protection functions have been implemented in ICE5QR2270AZ to protect the system and customize the IC for the chosen application. In case of failure modes, like brown-out or line OV, VCC OV/Under Voltage (UV), open control-loop or over-load, output OV, over-temperature, VCC short-to-ground and Current Sense (CS) short-to-ground, the device enters protection mode. By means of the cycle-by-cycle Peak Current Limitation (PCL), the dimensions of the transformer and current rating of the secondary diode can both be optimized. Thus, a cost-effective solution can easily be achieved.

　　图3.评估板EVAL_5QR2270AZ_33W1外形图

　　评估板EVAL_5QR2270AZ_33W1主要指标:

　　评估板EVAL_5QR2270AZ_33W1材料清单: