OnSemiNCL30051輸入90-265Vac60W離線LED驅(qū)動方案

1、On Semi NCL30051 輸入 90- 265 Vac 60W 離線 LED驅(qū)動方案On Semi公司的NCL30051是用于離線照明解決計劃的PFC和半橋諧振組合控制器，集成了實現(xiàn)高效率和小型LED驅(qū)動器/電源所需的全部功能，包括臨界導(dǎo)通模式(CrM) PFC升壓控制器和內(nèi)置的600V驅(qū)動器的半橋諧振控制器，主要用于高效LED驅(qū)動器和電源，電控制齒輪以及照明 鎮(zhèn)流器本文介紹了 NCL30051主要特性，方框圖，典型應(yīng)用以及60VW估 板NCL30051 LEDGER標(biāo)，和材料清單(BOM).NCL30051 LEDGEVB:60W 90-265 Vac 35-50 V Constan

2、t Current up to1.5A Isolated LED DriverThe NCL30051 is a combination of PFC and half bridge resonant controllers optimized for off line LED lighting solutions. This device integrates all the features needed to implement a highlyefficient and small form factor LED Driver/Power Supply. Itcontains a cr

3、itical conduction mode (CrM) power factorcorrection (PFC) boost controller and a half bridge resonant controller with a built in 600 V driver. The half bridge stage operates at a fixed frequency, greatly simplifying the control implementations. The output (current or voltage) regulation is achieved

4、by adjusting the PFC stage output voltage based on a control signal generated external to the NCL30051.This device includes an enable input on the PFC feedback pin, open feedback loop protection and PFC overvoltage and undervoltage detectors. Other features included in the NCL30051 are a 600 V start

5、up circuit and an adjustable frequency oscillator with a divide by 2 circuit to assure true symmetricduty ratio. The controllers are properly sequenced, simplifying system design.冬2頁NCL30051主要特性：Voltage Mode CrM Power Factor Correction ControllerpFC Open Feedback Loop ProtectionpFC Undervoltage Dete

6、ctorpFC Overvoltage DetectorHalf Bridge Stage with 600 V High Side Gate DriveState Machine Ensures Proper Turn on and Turn off of Half BridgeStageControllers are Properly Sequenced for Fault Free OperationNon Latching Fault ManagementInternal 600 V Startup CircuitWide Temperature Range of 40C to +125CThis is a Pb Free DeviceNCL3005