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HT7L5820 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT7L5820 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
1 / 14 page Rev. 1.20 1 November 17, 2016 Rev. 1.00 PB November 17, 2016 HT7L5820/HT7L5821 Integrated PFC and Quasi-Resonant Current Mode PWM Controller Application Circuits HT7L5820 HT7L5821 AC 16 13 14 HVS ZCD OPFC 6 CSPFC 4 INV 3 SEL 1 VIN VSS 9 OPWM 8 CSPWM 5 VCC 7 DET 10 FB 11 RT COMP 12 2 NC 15 Features • IntegratedTransitionMode(TM)PFCcontroller andQuasi-Resonant(QR)flybackcontroller • WideACinputrangefrom85VACto265VAC • Integrated650VJFETquickhighvoltagestart-up • IntegratedTHDPFCstageoptimiser • Brown-outandbrown-inprotection • Internalaccuratefeedbackreferencevoltage:±2% • Internal9.6msPWMsoft-start • High/Lowlineover-powercompensation • FBpinprotection(AutoRecovery) ♦ Over-powerandoverloadprotection ♦ Short-circuitprotection ♦ Open-loopprotection • Externaltriggeringandadjustabeover-temperature protection–RTPin • VCCpinOVP–latched • Internalover-temperatureshutdown–140°C • 16-pinNSOPpackage Applications • AC/DCNBadapters • Open-frameSMPS • Batterychargers • GeneralLEDlightingapplications • Industrial,commercial,andresidentialfixtures General Description TheHT7L5820/HT7L5821ishighlyintegrateddevice whichincludesaPowerFactorCorrectioncontroller andquasi-resonantflybackcontroller.Thehighlevel offunctionalintegrationprovidesthemeansforvery cost-effectivedesignswithaminimumofexternal components. InthePFCstagethedeviceusesatransitionmodeto providearegulatedoutputvoltagewithlowsystem costs,lowharmonicdistortionandhighpowerfactor. ForQRflybackthedeviceprovideshigherefficiencies andlowerEMIwhencomparedwithconventional PWMsystems. Thedevicealsoincludesarangeoffeaturestoprotect thecontrollerfromfaultconditions.Theseinclude secondarysideopen-loopandover-currentprotection, VCCpinover-voltageprotection,DETpinover- voltageforoutputover-voltageprotection,brown- in/outACinputvoltage,internalover-temperature shutdownandadjustableover-temperatureprotection usingtheRTpinwithanexternalNTCresistor. Selection Table Part No. HT7L5820 HT7L5821 Protection Mode Internal OTP Auto- Recovery Latched RT Pin OTP RT Pin Triggering Output Voltage OVP |
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