Infineon 600 V CoolMOS C7+ ICE2QR4780Z 800W电源设计方案

Infineon公司的高功率密度800W 130kHz白金服务器电源设计采用600 V CoolMOS™ C7 MOSFET,2EDN7524F非绝缘栅极驱动器(EiceDRIVER™),XMC1300 MCU和ICE2QR4780Z反激控制器.本文介绍了ICE2QRxx80Z反激控制器主要特性和亮点,框图和应用电路以及600 V CoolMOS™ C7系列MOSFET性能,以及800W 130kHz白金服务器电源设计输入和输出特性,电路图,材料清单和PCB设计图.
一.ICE2QRxx80Z反激控制器
The CoolSET®-Q1 series (ICE2QRxx80Z) is the firstgeneration of quasi-resonant integarted power ICs. It isoptimized for off-line switch mode power supplyapplications such as LCD monitor, DVD R/W, DVDCombo, Blue-ray DVD, set top box, etc. Operting theMOSFET switch in quasi-resonant mode, lower EMI,higher efficiency and lower voltage stress on secondarydiodes are expected for the SMPS. Based on theBiCMOS technology, the CoolSET®-Q1 series has awide operation range (up to 25V) of IC power supplyand lower power consumption. It also offers manyadvantages such as: a quasi-resonant operation till verylow load increasing the average system efficiencycompared to other conventional solutions; the ActiveBurst Mode operation enables an ultra-low powerconsumption at standby mode with small andcontrollable output voltage ripple.
ICE2QRxx80Z反激控制器亮点:
• Quasi resonant operation
• Active Burst Mode to reach the lowest standby power requirement<100mW@no load
• Digital frequency reduction for better overall system efficiency
• Integrated 800V startup cell
• Pb-free lead plating; RoHS compliant
ICE2QRxx80Z反激控制器主要特性:

• 800V avalanche rugged CoolMOS® with built-instartup cell
• Quasiresonant operation till very low load
• Active burst mode operation for low standby inputpower (< 0.1W)
• Digital frequency reduction with decreasing load forreduced switching loss
• Built-in digital soft-start
• Foldback point correction and cycle...