原标题：InfineonICE5QR0680AG 42W双输出开关电源(SMPS)解决方案

　　infineon公司的ICE5QR0680AG是第五代PWM控制器,集成了高压700 V和800 V超级结MOSFET和内部电流稳压器,具有快速起动性能,主要用在离线开关电源(SMPS),适配器,机顶盒,水/空气净化器和TV主电源,空调,冰箱,服务器,PC电源和音频的辅助电源.本文介绍了ICE5QR0680AG主要特性和优势,60W隔离反激开关电源(SMPS)电路图以及采用ICE5QR0680AG的42W双输出12V和5V SMPS准谐振演示板主要特性和优势,主要指标,电路图,材料清单和PCB设计图.

　　To achieve fast start-up performance, 5th generation controller utilize the high voltageMOSFET together with an internal current regulator to operate the start-up sequence in a safe and rapid manner, which is commonly known as cascode configuration.

　　Upsized zero crossing counters for valley detection

　　With the implementation of 10 zero crossing counters, the ability to detect AC line input level and an intelligent adaptive digital algorithm (patent pending), it enabled the 5th generation controller to minimize the spread of switching frequency under different AC line input conditions. This innovative approach has enabled SMPS designers to designwith higher switching frequency to take advantage of smaller magnetics and lowering ofsystem BOM cost.

　　Run cooler with CoolMOSTM P7 family

　　In tandem with Infineon’s leadership in the area of high voltage superjunction MOSFETs,the latest 700 V and 800 V CoolMOS™ P7 families will be integrated together with the 5th generation controller in a single package.CoolSETTM is available in both through-holeand SMD packages and thereby eliminates the need of heatsink and reduces BOM countwith a small footprint.

　　Comprehensive suite of protection features

　　In addition to the typical output protection such as output short, overload and overvoltage protection, the 5th generation controller is incorporating additional protections todetect abnormal line input conditions such as over-voltage and under-voltage protection.Similarly, in-system-protection has been further enhanced with the introduction ofVCC and CS pin short to ground to prevent controller damage during abnormal start-upconditions and OTP has been enhanced with hysteresis to improve operational fault handling. To minimize interruption to system operation, all protection modes areimplemented with auto resume to enhance user experience.

　　ICE5QR0680AG

　　描述:

　　Infineon latest 5 th generation quasi-resonant CoolSET™ offers high performance with the integration of latest P7 Generation of 700V and 800V in DSO-12 package.

　　特征描述:

　　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

　　优势:

　　High efficiency with latest CoolMOS™ P7 family and quasi-resonant switching scheme

　　Auto-restart recovery scheme to minimize interruption to system operation

　　Extensive protection coverage to increase system robustness

　　Rapid start-up performance with cascode configuration

　　目标应用:

　　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

　　ICE5QR0680AG主要特性:

　　››Integrated 700 V and 800 Vsuperjunction MOSFET withavalanche capability

　　››Comprehensive suite of protectionwhich include input OVP, brownin/out, pin short to GND and OTPwith hysteresis

　　››Innovative quasi-resonant switchingscheme to minimize frequencyspread under different line inputconditions

　　››High efficiency with latestCoolMOSTM P7 family andquasi-resonant switching scheme

　　››Auto-restart recovery scheme tominimize interruption to systemoperation

　　››Extensive protection coverage toincrease system robustness

　　››Rapid start-up performance withcascode configuration

　　ICE5QR0680AG主要优势:

　　››High efficiency with latestCoolMOSTM P7 family andquasi-resonant switching scheme

　　››Auto-restart recovery scheme tominimize interruption to systemoperation

　　››Extensive protection coverage toincrease system robustness

　　››Rapid start-up performance withcascode configuration

　　采用ICE5QR0680AG的42W双输出12V和5V SMPS准谐振演示板

　　This document is an engineering report that describes a universal-input 42 W 12 V and 5 V off-line flyback converter using the latest 5th generation Infineon QR CoolSET™ ICE5QR0680AG. It offers high-efficiency, low-standby power with selectable entry and exit standby power options, wide V CC operating range with fast start-up, robust line protection with input Over Voltage Protection (OVP), and brownout and various modes of protection for a highly reliable system. This demo board is designed for users who wish to evaluate the performance of ICE5QR0680AG and its ease of use.

　　This AN is an engineering report for a 42 W 12 V and 5 V demo board designed in a QR flyback converter topology using the 5th generation QR CoolSET™ ICE5QR0680AG. The target applications of ICE5QR0680AG are either auxiliary power supplies for white goods, PCs, servers or TVs, or enclosed adapters for Blu-ray players, set-top boxes, games consoles, etc. With the CoolMOS™ integrated into this IC, it greatly simplifies the design and layout of the PCB. The new 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 loads. In addition, numerous adjustable protection functions have been implemented in ICE5QR0680AG to protect the system and customize the IC for the chosen application. In case of failure modes such as brownout or line over-voltage, V CC over-/under-voltage, open control-loop or over-load, output over-voltage, over-temperature, V CC 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 the current rating of the secondary diode can both be optimized. Thus, a cost-effective solution can easily be achieved.

　　The DEMO_5QR0680AG_42W1 demostration board operates under a wide range input developed for offline SMPS applications. The board features the new ICE5QR0680AG PWM Quasi ResoantFlybackCoolSET™ with 800V integrated MOSFET in DSO-12 package.

　　42W双输出12V和5V SMPS演示板5QR0680AG_42W1主要特性:

　　Isolated flyback topology with dual output

　　Wide-range input rannginggtom from 85Vac to ~300Vac

　　Output #1: 12V/3.41A

　　Output #2: 5V/0.2A

　　42W双输出12V和5V SMPS演示板5QR0680AG_42W1优势:

　　High efficiency with quasi resonant switching

　　Cost-efficient solution for robust protection against line fault

　　42W双输出12V和5V SMPS演示板5QR0680AG_42W1目标应用:

　　Offline SMPS

　　Adapter

　　Main power for set-top box, water/air purifier and TV

　　Auxiliary power supply for aircon, refrigerator, server, PC power and audio

　　图.42W双输出12V和5V SMPS演示板5QR0680AG_42W1外形图

　　演示板5QR0680AG_42W1主要指标:

　　演示板5QR0680AG_42W1材料清单:

　　详情请见:

Infineon-ProductBrief_QuasiResonant_CoolSET_Generation_5_PWM_controller-PB-v01_00-EN.pdf

Infineon-ApplicationNote_Demoboard_ICE5QR0680AG-AN-v01_00-EN.pdf