SWITCHMODEâ¢ Power Supply Reference Manual

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SMPSRMFeatures:Off power consumption: 300mW drawn from the 8V output in pulsed mode.P in = 1.3W independent of the mains.Efficiency: 83%Maximum power limitation.Over–temperature detection.Demagnetization detection.Protection against open loop.ON Semiconductor Advantages:Very low component count controller.Fail safe open feedback loop.Programmable pulsed–mode power transfer for efficient system stand–by mode.Stand–by losses independent of the mains value.Complete semiconductor solution.Devices:Part NumberDescriptionMC44608P75GreenLine Very High Voltage PWM ControllerTL431Programmable Precision ReferenceMR856 Fast Recovery Rectifier (600 V)MR852 Fast Recovery Rectifier (200 V)1N5404 General Purpose Rectifier (400 V)1N4740A Zener Regulator (10 V, 1 W)TransformerSMT19 40346–29 (9 slots coil former)Primary inductance: 181 mHNprimary: 40 turnsN 112 V: 40 turnsN 16 V: 6 turnsN 8 V: 3 turnshttp://onsemi.com49
SMPSRMApplication: Low–Cost Offline IGBT Battery Charger130 to 350 V DC+R3220 kR1150R13100 kD11N4148C101 nFD4C3220 F/10 VD3MBRS240LT3D5 R2++C2220 F/10 V8 V at 400 mA–+C310 F/350 VR1120 kM1MMG05N60DR51 kMC14093R51N49371N4148IC1MOC8103150R11113 k0 VC710 FD212 V+C51 nF1.2 kQ1MBT3946DWR9470C91 nFR23.98 7 6 5MC33341R9100 Q5R10+C81 F1 2 3 4 D4C412 V47 nFR1220 kFigure 47. Low–Cost Offline IGBT Battery ChargerFeatures:Universal ac input.3 Watt capability for charging portable equipment.Light weight.Space saving surface mount design.ON Semiconductor Advantages:Special–process IGBT (Normal IGBTs will not function properly in this application).Off the shelf components.SPICE model available for MC33341.Devices:Part NumberDescriptionMMG05N60DInsulated Gate Bipolar Transistor in SOT–223 PackageMC33341Power Supply Battery Charger Regulator Control CircuitMBT3946DWDual General Purpose (Bipolar) TransistorsMBRS240LT3Surface Mount Schottky Power RectifierMC14093Quad 2–Input “NAND” Schmitt Trigger1N4937 General–Purpose Rectifier (600 V)http://onsemi.com50
Page 1 and 2: SMPSRM/DRev. 3, Jul-2002SWITCHMODE
Page 3 and 4: SMPSRMON Semiconductor and are regi
Page 6 and 7: SMPSRMIntroductionThe never-ending
Page 8 and 9: SMPSRMThe Flyback-Mode ConverterThe
Page 10 and 11: SMPSRMFactors 3, 4 and 5 have a dir
Page 12 and 13: SMPSRM+N1 N2C inV inControlTSWDL OC
Page 14 and 15: SMPSRMInterleaved Multiphase Conver
Page 16 and 17: SMPSRMV CCOSCChargeClock RampV erro
Page 18 and 19: SMPSRMThe Power MOSFETPower MOSFETs
Page 22 and 23: SMPSRMThe Magnetic ComponentsThe ma
Page 24 and 25: ÉÉ ÂÂÂÂÂÂÂÂÂÂÂÉÉÉÉ
Page 26 and 27: SMPSRMThe forward conduction loss o
Page 28 and 29: SMPSRMSnubbers and ClampsSnubbers a
Page 30 and 31: SMPSRMThe Active ClampAn active cla
Page 32 and 33: SMPSRMIn this design, both the powe
Page 34 and 35: SMPSRMA Power Factor Correction (PF
Page 36 and 37: SWITCHMODE Power Supply ExamplesSMP
Page 38 and 39: V_SyncH_SyncMonitorMCUSYNC PROCESSO
Page 40 and 41: SMPSRMACLineRectifier+Start-upSwitc
Page 42 and 43: http://onsemi.com41Part No. VRRM(V)
Page 44 and 45: SMPSRMApplication: Compact Power Fa
Page 46 and 47: SMPSRMFeatures:Off power consumptio
Page 48 and 49: SMPSRMFeatures:70 W output power fr
Page 52 and 53: SMPSRMApplication: 110 W Output Fly
Page 54 and 55: SMPSRMApplication: Efficient Safety
Page 56 and 57: SMPSRMApplication: AC-DC Battery Ch
Page 58 and 59: SMPSRMLiterature Available from ON
Page 60 and 61: SMPSRMWeb Locations for Switching-M
Page 62 and 63: Analog ICs for SWITCHMODE Power Sup
Page 64 and 65: SMPSRMON SEMICONDUCTOR STANDARD DOC

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SWITCHMODEâ¢ Power Supply Reference Manual