Transcription of Buck Current/Voltage Fed Push-Pull PWM …
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Buck Current/Voltage Fed Push-Pull PWM …
RDQS20 DELAY23 GND11 VCCREF15RT17CT18 SYNC19 CSA 9 CSA+8SS4 CSAO7 CEA 13 VEA 16 VEA+142224321 RAMPCEA+12 CEAOVEAO10 PULLPGNDPUSHSRCBUCKV+DELAYDELAYTQQREF&UV LOSSINHBTUVOSC500 kHzMAX6521 current SenseAmplifierILIM Comparator+3 VCurrent ErrorAmplifierPWM VFlyingDriverPush/PullDriversOSCUVLOV oltage ErrorAmplifier+UC2827-1,UC2827-2UC3827-1 , APRIL1999 REVISEDAPRIL2011 BUCKCURRENT/VOLTAGEFEDPUSH-PULLPWMCONTRO LLERSC heckforSamples:UC2827-1,UC2827-2, UC3827-1,UC3827-21 FEATURESDESCRIPTION IdealforMultipleOutputand/orHighTheUC382 7familyofcontrollerdevicesprovidesanVolt ageOutputVoltageConvertersintegratedcont rolsolutionforcascadedbuckand HighVoltage,HighCurrentFloatingcurrentfe dorvoltagefedpush- UC3827-1 CurrentFedControllerhasvoltagefedmodes,t hepush-pullswitchesaredrivenPush-PullDri verswithOverlappingat50% UC3827-2 VoltageFedControllerhasfedmode, ,thetwoswitchesaredrivenwitha specified AverageCurrentMode,PeakCurrentgaptimebet weentheswitchestopreventshortingModeorVo ltageModewithInputthetransformeracrossth eenergystoragecapacitorVoltageFeedforwar dControlforBuckandtoprohibitexcessi
rd s q 20 delay 23 gnd 11 vcc ref 15 rt 17 ct 18 sync 19 csa-9csa+ 8 ss 4 csao 7 cea-13vea-16vea+ 14 22 24 3 2 1 cea+ ramp 12 veao ceao 10 pull pgnd push src buck v+ delay delay t q q ref & uvlo ss inhbt uv osc 500 khz max 6 5
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