Powerint PFS708EG 150W PFC LED街灯照明解决方案(RDR－292)

Powerint公司的PFS704-729EG HiperPFS系列集成了连续导通模式(CCM)升压PFC控制器,栅极驱动器和高压功率MOSFET,采用小型eSIP功率封装.器件满足EN61000-3-2 Class C和D,从10%到满负载的效率大于95%,230VAC无负载输出稳压时的功耗小于130mW,230VAC无负载时遥控状态时的功耗小于50mW,可提供高达1kW的峰值输出功率,主要用于PC,大功率适配器,打印机,大功率LED照明,LCD TV,工业和电器设备,视频游戏控制台和通用PFC转换器.本文介绍了PFS704-729EG HiperPFS系列产品亮点,方框图,多种应用电路以及90 VAC - 265 VAC输入48V/150W LED街灯照明参考设计主要指标,电路图和材料清单于PCB布局图.
The HiperPFS device family members incorporate a continuous conduction mode (CCM) boost PFC controller, gate driver, and high voltage power MOSFET in a single, low-profile eSIP™ power package that is able to provide near unity input power factor. The HiperPFS devices eliminate the PFC converter’s need for external current sense resistors, the power loss associated with those components, and leverages an innovative control technique that adjusts the switching frequency over output load, input line voltage, and even input line cycle. This control technique is designed to maximize efficiency over the entire load range of the converter, particularly at light loads. Additionally, this control technique significantly minimizes the EMI filtering requirements due to its wide-bandwidth spread spectrum effect. HiperPFS includes Power Integrations’ standard set of comprehensive protection features, such as integrated soft-start, UV, OV, brown-in/out, and hysteretic thermal shutdown. HiperPFS also provides cycle-by-cycle current limit for the power MOSFET, power limiting of the output for over-load protection, and pin-to-pin short-circuit protection.
HiperPFS’s innovative variable-frequency continuous conduction mode of operation (VF-CCM) minimizes switching losses by maintaining a low average switching frequency, while also varying the switching frequency in order to suppress EMI, the traditional challenge with continuous-conductio...