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Compensation de phase de la gestion IC de la puissance SOIC-8 UCC28019 UCC28019ADR
Caractéristiques :
1. la solution 8-Pin réduit les composants externes
2. InputVoltage large-RangeUniversalAC
3. Fixed65-kHzOperatingFrequency
4.MaximumDutyCycleof 98% (type.)
5.OutputOver/UndervoltageProtection
6.InputBrown-OutProtection
7. Cycle-par-CyclePeakCurrentLimiting
8. OpenLoopDetection•
9. Low-PowerUser-ControlledStandbyMode2
Applications :
1. CCMBoostPowerFactorCorrectionPowerConvertersin gamme du kilowatt
W >2 de 100
2. DigitalTV• HomeElectronics
3. WhiteGoodsand IndustrialElectronics
4.Serverand DesktopPowerSupplies
Description :
boosttopologyoperatingin ContinuousConductionMode du
controllerusesthe 1.TheUCC28019A8-pinactivePowerFactorCorrection
(PFC) (CCM).
2. Le systemsin de suitablefor de controlleris le lineinput
large-rangeuniversalac de rangeovera de 100 kilowatts de W to>2.
3. début upcurrentduringundervoltagelockoutislessthan200μA.
4. pullingthe powerstandbymodeby VSENSEpin below0.77V de controllow
de Theusercan.
5. bas-distortionwaveshapingof les
inputcurrentusingaveragecurrentmodecontrolis
achievedwithoutinputlinesensing, externalcomponentcount de
reducingthe.
6. Simpleexternalnetworksallowforflexiblecompensationof les
currentandvoltagecontrolloops.
7. trimmedto d'internallyfixedand de Theswitchingfrequencyis
meilleur que ±5% accuracyat25°C.
Fast1.5-Apeakgatecurrentdrivestheexternalswitch.
8. Numeroussystem-levelprotectionfeaturesincludepeakcurrentlimit,
softover-actuel, ouvert-loopdetection, inputbrown-out,
andoutputover/sousvoltage.
9. trimmedinternalreferenceprovidesaccurateprotectionthresholdsand
de Soft-startlimitsboostcurrentduringstart-up.A un regulationset
point.
10. Un gatedrivevoltageto 12.5V d'internalclamplimitsthe.