PowerintPFS708EG150WPFCLED街灯照明解决方案街灯照明解决方案(RDR--
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Powerint公司的PFS704-729EGHiperPFS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EN61000-3-2ClassC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,LCDTV,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PFS
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
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-conduction-mode solutions. Systems using HiperPFS typically reduce the total X and Y
capacitance requirements of the converter, the inductance of both the boost choke and EMI noise suppression chokes,
reducing overall system size and cost. Additionally, compared with designs that use discrete MOSFETs and controllers,
HiperPFS devices dramatically reduce component count and board footprint while simplifying system design and enhancing
reliability. The innovative variable-frequency, continuous conduction mode controller enables the HiperPFS to realize all of
the benefits of continuous-conduction mode operation while leveraging low-cost, small, simple EMI filters.
Many regions mandate high power factor for many electronic products with high power requirements. These rules are
combined with numerous application-specific standards that require high power supply efficiency across the entire load
range, from full load to as low as 10% load. High efficiency at light load is a challenge for traditional PFC approaches in
which fixed MOSFET switching frequencies cause fixed switching losses on each cycle, even at light loads. HiperPFS
simplifies compliance with new and emerging energy-efficiency standards over a broad market space in applications such as
PCs, LCD TVs, notebooks, appliances, pumps, motors, fans, printers, and LED lighting.
HiperPFS advanced power packaging technology and high efficiency simplifies the complexity of mounting the package and
thermal management, while providing very high power capabilities in a single compact package; these devices are suitable
for PFC applications from 75 W to 1 kW
PFS704-729EG HiperPFS系列产品亮点:
Protected Power Factor Correction Solution
• Incorporates high-voltage power MOSFET, controller, and gate driver
• EN61000-3-2 Class D compliance
• Integrated protection features reduce external component count
• Accurate built-in brown-in/out protection
• Accurate built-in undervoltage (UV) protection
• Accurate built-in overvoltage (OV) protection
• Hysteretic thermal shutdown (OTP)
• Internal power limiting function for overload protection
• Cycle-by-cycle power switch current limit
• No external current sense required