[原创] Infineon ICL5101高压110W LED驱动器解决方案

Infineon公司的ICL5101是集成了PFC的半桥控制器,PFC级工作在CrCM和DCM模式,支持低至正常负载0.1%时稳定工作,通用的AC和DC输入,集成了高压栅极驱动器,功率因素大于99%,THD小于10%,效率高达95%,起动时间小于200ms,主要用在户内和户外大功率LED照明,街灯照明,停车场和区域照明以及办公室照明.本文介绍了ICL5101主要特性, 典型应用电路以及采用PFCLLC拓扑的110 W/54 V LED驱动器演示板主要特性,电路图,材料清单和PCB元件布局图.

The ICL5101 integrates a half-bridge controller with a PFC stage in a single package. The high level of integration assures a low count of external components, enabling small form factor designs ideal for compact power supplies in lighting applications, such as LED driver.

The PFC stage operates in CrCM and DCM mode, supporting stable operation at low load conditions down to 0.1% of the nominal power. The half-bridge resonant stage – typ­ically in LLC topology – provides high- and low-side gate drive function for discrete MOSFETs rated up to 650V. Its non-overlap dead time is adaptive from 500ns ... 1.0μs.
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