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IRIR1155300W能源之星電源參考設計方案

2011-06-23
作者:IR 公司

IR 公司的IR1155是采用IR所有權的“一周期控制”(OCC)技術的微PFC器件,采用連續導通模式,可編程開關頻率48kHz-200kHz,輸入電壓85-264VAC,滿足能源之星,綠色能源和藍色天使等電源標準。本文介紹了IR1155 主要特性,方框圖,應用圖以及IRAC1155-300W 參考設計主要特性指標,電路圖和材料清單。

The μPFC IR1155 power factor correction IC, based on IR proprietary "One Cycle Control" (OCC) technique, provides for high PF, low THD and excellent DC Bus regulation while enabling drastic reduction in component count, PCB area and design time as compared to traditional solutions. The IC is designed to operate in continuous conduction mode Boost PFC converters with average current mode control over 85-264VAC input line voltage range. Switching frequency can be programmed to anywhere between 48kHz to 200kHz based on the specific application requirement.

In addition, IR1155 offers several advanced system-enabling and protective features such as dedicated pin for over voltage protection, cycle by cycle peak current limitation, open loop protection, VCC UVLO, soft-start and micropower startup/sleep-mode with IC current consumption less than 200μA. The sleep mode, invoked by pulling the OVP/EN pin low, enables compliance with standby power requirements mandated by regulations such as Energy Star, Green Power, Blue Angel etc.

IR1155 主要特性:

• PFC IC with IR proprietary “One Cycle Control”

• Continuous conduction mode boost type PFC

• Programmable switching frequency (48k-200kHz)

• Average current mode control

• Output overvoltage protection

• Open loop protection

• Cycle by cycle peak current limit

• VCC under voltage lockout

• Programmable soft start

• Micropower startup

• User initiated micropower “Sleep Mode”

• OVP/EN pin internal filtering for higher noise immunity

• 1.5A peak gate drive

• Latch immunity and ESD protection

圖1。IR1155方框圖

圖2。IR1155應用圖

IRAC1155-300W 參考設計

IRAC1155-300W is a full function AC-DC reference design showcasing the operation of IR1155 PFC IC in a continuous conduction mode boost converter for achieving power factor correction, sub-10% harmonic current distortion and EN61000-3-2 Class D harmonic current limits standard compliance. Designed to be operated from 85-264VAC universal input voltage, IRAC1155-300W delivers 300W continuous output power via a fully regulated 388V DC bus. Thanks to IR1155 PFC IC, the reference design is rendered with a very high level of safety against system abnormalities such as DC bus voltage loop feedback loss, system overcurrent & overvoltage protection.

The IRAC1155-300W reference design is an excellent design example that can be seamlessly imported & integrated by system designers that require a high-performance PFC stage at the AC-DC front-end of their designs in a variety of applications.

IRAC1155-300W 參考設計主要特點:

IEC61000-3-2 Class D Standards Compliant

Less than 10% Total Harmonic Distortion (115-230VAC/300W)

Power Factor higher than 0.99 (115-230VAC/300W)

Universal AC Input Voltage capability

Fully regulated 388V DC bus

Full load start-up, no minimum load requirements

Current loop controlled soft-current limit protection for overpower limitation at minimum VAC

Cycle-by-Cycle Peak Current Limit

Output Over Voltage Protection

Open Feedback Loop Protection

100kHz Switching Frequency

IRAC1155-300W 參考設計主要指標:


圖3。IRAC1155-300W 參考設計外形圖

圖4。IRAC1155-300W 參考設計電路圖
IRAC1155-300W 參考設計材料清單:

詳情請見:
http://www.irf.com/product-info/datasheets/data/ir1155spbf.pdf

http://www.irf.com/technical-info/refdesigns/irac1155-300w.pdf
 



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