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Коррекция фактора силы UCC28019 ICs управления силы SOIC-8 UCC28019ADR
Особенности:
1. решение 8-Pin уменьшает внешние компоненты
2. широкое-RangeUniversalAC InputVoltage
3. Fixed65-kHzOperatingFrequency
4.MaximumDutyCycleof 98% (тип.)
5.OutputOver/UndervoltageProtection
6.InputBrown-OutProtection
7. Цикл- -CyclePeakCurrentLimiting
8. OpenLoopDetection•
9. Low-PowerUser-ControlledStandbyMode2
Применения:
1. CCMBoostPowerFactorCorrectionPowerConvertersin ряд kW w к >2
100
2. DigitalTV• HomeElectronics
3. WhiteGoodsand IndustrialElectronics
4.Serverand DesktopPowerSupplies
Описание:
(PFC) boosttopologyoperatingin ContinuousConductionMode
controllerusesthe 1.TheUCC28019A8-pinactivePowerFactorCorrection
(CCM).
2. Systemsin suitablefor controlleris lineinput rangeovera 100 kW w
to>2 широкое-rangeuniversalac.
3. начало upcurrentduringundervoltagelockoutislessthan200μA.
4. pullingthe VSENSEpin below0.77V controllow Theusercan
powerstandbymodeby.
5. низко--distortionwaveshapingof
inputcurrentusingaveragecurrentmodecontrolis
achievedwithoutinputlinesensing, externalcomponentcount
reducingthe.
6. Simpleexternalnetworksallowforflexiblecompensationof
currentandvoltagecontrolloops.
7. trimmedto internallyfixedand Theswitchingfrequencyis лучшее чем
±5% accuracyat25°C.
Fast1.5-Apeakgatecurrentdrivestheexternalswitch.
8. Numeroussystem-levelprotectionfeaturesincludepeakcurrentlimit,
softover-настоящий, открытое-loopdetection, inputbrown-out,
andoutputover/недонапряжение.
9. trimmedinternalreferenceprovidesaccurateprotectionthresholdsand
Soft-startlimitsboostcurrentduringstart-up.A
regulationset-точечное.
10. Gatedrivevoltageto 12.5V internalclamplimitsthe.