Energy-Efficient, Accurate Primary-Side Regulation CC/CV Switcher for LED Lighting Applications

Product Highlights Accurate CC Regulation, Meets ±3 in a Typical Design1 Controller Automatically Compensates For: ? Transformer inductance variation ? External component changes with temperature ? Input line voltage variations This enhances production yield Cost-Effective, Small Size Desi

文件：1.48373 Mbytes 頁(yè)數(shù)：18 Pages

POWERINTPower Integrations, Inc.

荷蘭帕沃英蒂格盛有限公司

Energy-Efficient, Accurate Primary-Side Regulation

Applications ? LED bulbs, down lights, luminaires, ballasts and T8 tubes Description The LYTSwitch?-2 family of ICs dramatically simplifies low power CC LED drivers by eliminating the optocoupler and secondary control circuitry. The family introduces a revolutionary control technique which p

文件：1.48384 Mbytes 頁(yè)數(shù)：18 Pages

POWERINTPower Integrations, Inc.

荷蘭帕沃英蒂格盛有限公司

Energy-Efficient, Accurate Primary-Side Regulation CC/CV Switcher for LED Lighting Applications

Product Highlights Accurate CC Regulation, Meets ±3 in a Typical Design1 Controller Automatically Compensates For: ? Transformer inductance variation ? External component changes with temperature ? Input line voltage variations This enhances production yield Cost-Effective, Small Size Desi

文件：1.48373 Mbytes 頁(yè)數(shù)：18 Pages

POWERINTPower Integrations, Inc.

荷蘭帕沃英蒂格盛有限公司

適用于隔離式應(yīng)用的高能效、精確初級(jí)側(cè)調(diào)節(jié)的LED驅(qū)動(dòng)器IC

LYTSwitch-2通過(guò)省去光耦器和次級(jí)控制電路，可以大大簡(jiǎn)化低功率恒流LED驅(qū)動(dòng)器的設(shè)計(jì)。該產(chǎn)品系列采用革新性的控制技術(shù)，能夠提供極為嚴(yán)格的輸出電流調(diào)節(jié)，補(bǔ)償變壓器和外部元件變化、內(nèi)部參數(shù)容差以及輸入電壓變化。\r\n\r\n 該器件在一個(gè)單片IC上集成了一個(gè)725 V功率MOSFET、新穎的開(kāi)/關(guān)控制狀態(tài)機(jī)、一個(gè)自偏置的高壓開(kāi)關(guān)電流源、可降低EMI的頻率抖動(dòng)、逐周期電流限制及遲滯熱關(guān)斷電路。 嚴(yán)格的CC調(diào)節(jié)（典型值< ±3%），并提供以下補(bǔ)償：\r\n? 變壓器電感變化\r\n? 外圍元件的溫度漂移\r\n? 補(bǔ)償輸入電壓變化\r\n\r\n小尺寸的高可靠性設(shè)計(jì)\r\n? 省去光耦器和次級(jí)CC控制電路\r\n? 省去控制環(huán)路補(bǔ)償電路\r\n? 頻率抖動(dòng)技術(shù)可極大降低EMI濾波元件的成本\r\n? 可編程的開(kāi)關(guān)頻率可降低變壓器尺寸\r\n? 725 V開(kāi)關(guān)MOSFET能實(shí)現(xiàn)無(wú)箝位反激式設(shè)計(jì)\r\n\r\n先進(jìn)的保護(hù)/安全特性\r\n? 自動(dòng)重啟動(dòng)保護(hù)功能在輸出短路及控制環(huán)路故障（元件開(kāi)路和短路）狀況下可將輸出功率降低90%以上\r\n? 自動(dòng)恢復(fù)的遲滯過(guò)熱保護(hù)\r\n;

PI

Package：8-SOIC（0.154"，3.90mm 寬），7 引線(xiàn)；包裝：卷帶（TR） 類(lèi)別：集成電路（IC） AC DC 轉(zhuǎn)換器，離線(xiàn)開(kāi)關(guān) 描述：IC OFFLINE SWITCH FLYBACK 8SO

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