IR11672ASPBF International Rectifier, IR11672ASPBF Datasheet
IR11672ASPBF
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IR11672ASPBF Summary of contents
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... Turn off Propagation Delay Package Options Rdc XFM U1 1 VCC VGATE 2 OVT GND 3 MOT VS RMOT IR11672AS IR11671 Datasheet No - PD97469 Nov 2, 2009 IR11672AS TM CONTROL IC Flyback, Resonant Half-bridge 200V 10.7V (typical) +2A & -7A o- 60ns (typical) 50ns (typical) 8-Lead SOIC Cdc © 2009 International Rectifier ...
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... Qualification Information Absolute Maximum Ratings Electrical Characteristics Functional Block Diagram Input/Output Pin Equivalent Circuit Diagram Lead Definitions Lead Assignments Application Information and Additional Details Package Details Tape and Reel Details Part Marking Information Ordering Information www.irf.com © 2009 International Rectifier 2 IR11672AS Page ...
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... Ruggedness and noise immunity are accomplished using an advanced blanking scheme and double-pulse suppression which allow reliable operation in all operating modes. www.irf.com © 2009 International Rectifier 3 IR11672AS ...
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... Human Body Model IC Latch-Up Test RoHS Compliant † Qualification standards can be found at International Rectifier’s web site †† Higher qualification ratings may be available should the user have such requirements. Please contact your International Rectifier sales representative for further information. ††† Higher MSL ratings may be available for the specific package types listed here. Please contact your International Rectifier sales representative for further information ...
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... S R 128 θJA P 970 D fsw 500 Definition Component 5 IR11672AS Units Remarks =20V, Gate off CC °C °C °C/W SOIC-8 mW SOIC-8, T =25°C AMB kHz Min. Max. Units 11 200 -25 125 °C --- 500 kHz Min. Max. Units 5 75 kΩ © 2009 International Rectifier V ...
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... SW C =10nF,f =400kHz mA LOAD SW mA µ 0. µA V =0V, V =15V MΩ GBD Units Remarks OVT = 0V OVT floating, V =0V S OVT = VCC -50mV µ 200V µ GBD V Units Remarks µ =10V – GBD =20V – GBD =10V – GBD CC © 2009 International Rectifier ...
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... CC V (internally clamped 1nF, V =12V LOAD 10nF, V =12V LOAD 1nF, V =12V LOAD 10nF, V =12V LOAD -100mV overdrive DS GATE -100mV overdrive DS GATE Ω – GBD GATE Ω -200mA GATE 10nF – GBD LOAD 10nF – GBD LOAD © 2009 International Rectifier ...
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... Functional Block Diagram VCC EN VCC VD VTH1 VS OVT VTH3 www.irf.com MOT Cycle by Cycle MOT Check Circuit Min ON Time RESET Min OFF Time RESET VTH1 VTH2 8 IR11672AS VCC UVLO & REGULATOR VGATE DRIVER GND Vgate V VTH3 DS © 2009 International Rectifier ...
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... I/O Pin Equivalent Circuit Diagram VD ESD Diode 200V Diode GND www.irf.com R ESD 9 IR11672AS © 2009 International Rectifier ...
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... Lead Definitions PIN# Symbol 1 VCC 2 OVT 3 MOT GND 8 VGATE Lead Assignments www.irf.com Description Supply Voltage Offset Voltage Trimming Minimum On Time Enable FET Drain Sensing FET Source Sensing Ground Gate Drive Output 10 IR11672AS © 2009 International Rectifier ...
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... FETs in parallel. Care must be taken in order to keep the gate loop as short and as small as possible in order to achieve optimal switching performance. www.irf.com MOSFETs. DSon is crossed for the first time, TH2 The internal devices and gate driver are © 2009 International Rectifier 11 IR11672AS . TH1 ...
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... Protection Mode, so that the IC can automatically resume normal operation once the load increases to a level and the secondary current conduction time is longer than MOT. www.irf.com . The UVLO mode is accessible from any other state of operation CC START occurs. CC UVLO exceeds V to activate the gate. This ensures that the GATE output is not TH3 12 IR11672AS © 2009 International Rectifier ...
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... This will happen differently depending on the mode of TH1 may trigger once again the turn on threshold: for this reason after V has been triggered. BLANK TH1 crosses the positive threshold IR11672AS TH3 . TH2 voltage to jump negative. Depending on DS also the blanking time TH3 © 2009 International Rectifier is TH2 ...
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... The turn off speed is critical to avoid cross conduction on the primary side and reduce switching losses. Also in this case a blanking period will be applied, but given the very fast nature of this transition, it will be reset as soon as V crosses V DS www.irf.com TH3 14 IR11672AS time time time time on the SR FET. DS and TH1 © 2009 International Rectifier ...
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... The operation waveforms of IR11672A in a flyback converter under CCM mode and DCM/CrCM were shown in Figure 5 and Figure 6 respectively. I SEC TH1 V TH2 Gate Drive Blanking www.irf.com T2 T2 MOT Figure 5: Secondary side CCM operation 15 IR11672AS time time V TH3 time time time © 2009 International Rectifier ...
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... The typical operation waveform can be found below. www.irf.com T2 MOT 10us blanking Rcc1 CVCC1 1 VCC GATE 2 OVT GND 3 MOT Rmot1 T1 IR11672A Rcc2 CVCC2 1 VCC GATE 2 OVT 3 MOT 4 EN Rmot2 IR11672A 16 IR11672AS V TH3 time time M3 Rg1 GND Rg2 M4 © 2009 International Rectifier VOUT Cout ...
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... The IC disables the gate output in the protection mode and automatically resume to normal operation as the load increasing to a level where the SR current conduction time is longer than MOT. This function works in both flyback and resonant half-bridge topologies. Figure example in Flyback converter. www.irf.com Figure 9: MOT Protection Mode 17 IR11672AS © 2009 International Rectifier ...
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... This function works in both flyback and resonant half-bridge topologies. Figure example in resonant half-bridge converter. Figure 10: Synchronized Enable Function (resonant half-bridge) General Timing Waveform VCC UVLO TH2 90% 50% 10% www.irf.com NORMAL Figure 11: Vcc UVLO V TH1 t Don V Gate t rise Figure 12: Timing waveform 18 IR11672AS VCC ON VCC UVLO t UVLO t Doff t fall © 2009 International Rectifier ...
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... Figure 13: Supply Current vs. Supply Voltage Figure 15: Icc Quiescent Currrent vs. Temperature www.irf.com Figure 14: Undervoltage Lockout vs. Temperature Figure 16: Icc Supply Currrent @1nF Load vs. Temperature © 2009 International Rectifier 19 IR11672AS ...
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... Figure 17: V vs. Temperature TH1 Figure 19: Comparator Hysteresis vs. Temperature www.irf.com Figure 18: V vs. Temperature TH2 Figure 20: V vs. Temperature and Common TH1 Mode (OVT=Floating) © 2009 International Rectifier 20 IR11672AS ...
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... Figure 21: V vs. Temperature and TH2 Common Mode Figure 23: Enable Threshold vs. Temperature www.irf.com Figure 22: MOT vs Temperature Figure 24: Turn-on and Turn-off Propagation Delay vs. Temperature © 2009 International Rectifier 21 IR11672AS ...
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... Package Details: SOIC8N www.irf.com © 2009 International Rectifier 22 IR11672AS ...
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... IR11672AS Max 0.318 0.161 0.484 0.218 0.255 0.208 n/a 0.062 A Max 13.001 0.844 0.519 0.096 4.015 0.724 0.673 0.566 © 2009 International Rectifier ...
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... Part Marking Information www.irf.com © 2009 International Rectifier 24 IR11672AS ...
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... For technical support, please contact IR’s Technical Assistance Center www.irf.com Standard Pack Form Tube/Bulk SOIC8N Tape and Reel http://www.irf.com/technical-info/ WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 25 IR11672AS Complete Part Number Quantity 95 IR11672ASPBF 2500 IR11672ASTRPBF © 2009 International Rectifier ...