Infineon ICE2QR1765Z 20W5V离线开关电源解决方案

Infineon公司的ICE2QR1765Z是CoolSET®-Q1系列器件,是准谐振的功率集成电路,采用BiCMOS技术,集成了带起动单元的650V CoolMOS,能工作在非常低的负载,突发模式的待机功耗小于0.1W,内置了数字软起动,主要用在LCD监视器, DVD R/W, DVD,蓝光DVD,机顶盒等.本文介绍了ICE2QR1765Z产品亮点和主要特性, 方框图和典型应用电路以及20W/5V评估板主要指标,电路图, 变压器结构图和材料清单,PCB布局图.
The CoolSET®-Q1 series (ICE2QRxx65Z) is the first generation of quasi-resonant integrated 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. Operating 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 25V) of IC power supply and lower power consumption. It also offers many advantages such as quasi-resonant operation till very low load which increases the average system efficiency,
Active Burst Mode operation which enables an ultra-low power consumption at standby mode with small and controllable output voltage ripple, etc.
ICE2QR1765Z产品亮点:
• 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 650V avalanche rugged CoolMOS® with startup cell
• Pb-free lead plating; RoHS compliant
ICE2QR1765Z主要特性:
• 650V avalanche rugged CoolMOS® with built-in startup cell
• Quasi resonant operation till very low load
• Active burst mode operation for low standby input power (< 0.1W)
• 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...