本文介紹了CS1500主要特性,方框圖,基本應(yīng)用電路和材料清單,以及90W高效PFC LLC諧振轉(zhuǎn)換器參考設(shè)計(jì)電路圖和材料清單(BOM).
CS1500是Cirrus 公司的適用于通用輸入的高性能功率修正因素(PFC)控制器,采用有所有權(quán)的數(shù)字算法的不連續(xù)導(dǎo)通模式(DCM),具有可變的接通時(shí)間和可變頻率控制,從而保證PFC為一. CS1500的保護(hù)特性包括過壓,過流,超功率,開路和短路以及超溫保護(hù),主要用在電源和照明鎮(zhèn)流器設(shè)計(jì).
Digital Power Factor Correction IC

The CS1500 is a high-performance power factor correction (PFC) controller for universal AC input, which uses a proprietary digital algorithm for discontinuous conduction mode (DCM) with variable on-time and variable frequency control, ensuring unity power factor.

The CS1500 incorporates all the safety features necessary for robust and compact PFC stages. In addition, it has burst mode control to lower the light-load/standby losses to a minimum.

Protection features such as overvoltage, overcurrent, overpower, open- and short-circuit protection, overtemperature, and brownout help protect the device during abnormal transient conditions.

The digital controller optimizes the system stability and transient performance, simplifies the PFC design, reduces the external component count and BOM costs. The simple design and minimum cost makes CS1500 the ideal choice for PFC up to 300 watts.

CS1500主要特性:

Digital EMI Noise Shaping

Excellent Efficiency Under All Load Conditions

Minimal External Devices Required

Optimized Digital Loop Compensation

Comprehensive Safety Features

? Undervoltage Lockout (UVLO)

? Output Overvoltage Protection

? Input Current Limiting

? Output Overpower Protection

? Input Brownout Protection

? Open/short Loop Protection for IAC & FB Pins

? Thermal Shutdown


圖1.CS1500方框圖

圖2.CS1500基本應(yīng)用電路圖
應(yīng)用電路中元件數(shù)值表:

90W高效PFC LLC諧振轉(zhuǎn)換器參考設(shè)計(jì)

CS1500 90W, High-efficiency PFC w/ LLC Resonant Converter Reference Design

The CRD1500-90WLLC circuit has two stages: a digitally controlled front-end PFC and a resonant LLC converter. The CS1500 is a high-performance power factor correction (PFC) controller for universal AC input that uses a proprietary digital algorithm with variable ontime, variable frequency, & DCM, which ensures unity power factor.

The resonant LLC converter uses the L6599A controller in the second stage.

90W高效轉(zhuǎn)換器參考設(shè)計(jì)主要特性:

Universal Input

– Mains Range: 90~265 VAC

– Line Frequency: 45~65 Hz

Rated Output Specification: 19 V, 90 W

EN6100-3-2 Class-D Compliance

Efficiency: 91% @ 90 W, 230 VAC

Low No-load Power Dissipation

Low PFC Component Count

Board Dimension: 61 mm x 135 mm

圖3.90W高效PFC LLC諧振轉(zhuǎn)換器參考設(shè)計(jì)外形圖

圖4.參考設(shè)計(jì)電路圖(1)

圖5.參考設(shè)計(jì)電路圖(2)
參考設(shè)計(jì)材料清單(BOM):