Transcription of POWER CONVERTER TOPOLOGY TRENDS - PSMA
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POWER CONVERTER TOPOLOGY TRENDS - PSMA
Name: Steve Mappus Systems Engineer Date: October 02, 2014 The POWER to Amaze. POWER CONVERTER TOPOLOGY TRENDS , 2 Agenda TOPOLOGY Overview Non Isolated Topologies Isolated DC-DC Derivatives Single Ended Topologies Transformer Reset Techniques Flyback CONVERTER Forward CONVERTER Double Ended Topologies Push Pull Half Bridge Full Bridge Summary 3 DOUBLE-ENDEDSINGLE-ENDEDACTIVE CLAMP2-SWITCHPUSH-PULLHALF BRIDGEFULL BRIDGELOW POWER (< 100 W)MID- POWER (100 W - 500 W)HIGH- POWER (> 500 W)HARD SWITCHEDZVT/PHASE SHIFTNON-ISOLATEDISOLATEDDVViO=DVViO =11 FORWARDDDVViO =1 SINGLE-ENDEDFLYBACKBOOSTBUCK-BOOSTBUCKAC TIVE CLAMP2-SWITCHLLCI solated POWER TOPOLOGY Derivatives 8 Mainstream CONVERTER Topologies Non-Isolated Isolated Bridge Bridge POWER levels numbers for general discussion only.
Flyback Converter . CCM Operation . D D N N V V. P S IN O. − = × 1 (a) Flyback Converter (b) CCM Waveforms CCM Transfer Function Q Limitations Q1 switching loss (hard switched) D2 conduction loss Q1(V DS) > V IN 50% duty cycle limit Right half plane zero in CCM Output rectifier reverse recovery V OUT L M Q C OUT D V IN C IN n:1 N P N S 0 0 0 ...
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