IR11672AS International Rectifier, IR11672AS Datasheet
IR11672AS
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IR11672AS Summary of contents
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... Turn off Propagation Delay Package Options Rdc XFM VCC VGATE 2 7 OVT GND 3 6 MOT VS RMOT IR11672AS IR11671 November 19, 2009 IR11672AS TM CONTROL IC Flyback, Resonant Half-bridge 200V 10.7V (typical) +2A & -7A 60ns (typical) 50ns (typical) 8-Lead SOIC Cdc © 2009 International Rectifier ...
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... 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.DataSheet4U.com www.irf.com © 2009 International Rectifier 2 IR11672AS Page ...
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... MOSFETs. Ruggedness and noise immunity are accomplished using an advanced blanking scheme and double-pulse suppression which allow reliable operation in all operating modes. www.DataSheet4U.com www.irf.com © 2009 International Rectifier 3 IR11672AS ...
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... Comments: This family of ICs has passed JEDEC’s Industrial qualification. IR’s Consumer qualification level is granted by extension of the higher Industrial level. Machine Model Human Body Model (per EIA/JEDEC standard EIA/JESD22-A114) 4 IR11672AS †† Industrial ††† MSL2 260°C (per IPC/JEDEC J-STD-020) ...
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... -0.3 20 GATE T -40 150 J T -55 150 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 ° ...
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... HYST I 1 7.5 IBIAS1 I 30 100 IBIAS2 V 2 OFFSET V -0. Symbol Min. Typ. Max BLANK 2.5 V TH3 5 HYST3 6 IR11672AS and I ) parameters O O Units Remarks V GBD =1nF,f =400kHz mA LOAD SW C =10nF,f =400kHz mA LOAD SW mA µ 0. µA V =0V, V ...
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... Don Doff 0.7 down 2 O source sink 7 IR11672AS and I ) parameters O O Units Remarks ns R =5kΩ, V =12V MOT CC µs R =75kΩ, V =12V MOT CC Units Remarks 200mA GATE V =12V-18V CC V (internally clamped) ...
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... Functional Block Diagram VCC EN VCC VD VS OVT VTH3 www.DataSheet4U.com www.irf.com MOT Cycle by Cycle MOT Check Circuit Min ON Time VTH1 RESET Min OFF Time RESET 8 IR11672AS VCC UVLO & REGULATOR DRIVER Vgate VTH1 V VTH2 VTH3 DS © 2009 International Rectifier VGATE GND ...
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... I/O Pin Equivalent Circuit Diagram VD ESD Diode www.DataSheet4U.com 200V Diode GND www.irf.com R ESD 9 IR11672AS © 2009 International Rectifier ...
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... 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 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 CC UVLO exceeds V to activate the gate. This ensures that the GATE output is not DS TH3 12 IR11672AS occurs. © 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 © ...
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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 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 www.DataSheet4U.com V TH2 Gate Drive Blanking www.irf.com MOT Figure 5: Secondary side CCM operation 15 IR11672AS time time V TH3 time time time © 2009 International Rectifier ...
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... In resonant half-bridge converter, the turn-on phase and turn-off phase is similar to flyback except the current shape is sinusoid. The typical operation waveform can be found below. www.irf.com T1 T2 MOT Figure 6: Secondary side DCM/CrCM operation Rcc1 Rmot1 T1 Lm Rcc2 Rmot2 Figure 7: Resonant half-bridge application circuit 16 IR11672AS V TH3 time time 10us blanking M3 CVCC1 Rg1 1 8 VCC GATE 2 7 ...
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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.DataSheet4U.com www.irf.com Figure 9: MOT Protection Mode 17 IR11672AS © 2009 International Rectifier ...
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... Figure 10: Synchronized Enable Function (resonant half-bridge) General Timing Waveform VCC www.DataSheet4U.com www.irf.com UVLO NORMAL Figure 11: Vcc UVLO TH2 t Don V Gate 90% 50% 10% t rise Figure 12: Timing waveform 18 IR11672AS VCC ON VCC UVLO t UVLO V TH1 t Doff t fall © 2009 International Rectifier ...
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... Figure 13: Supply Current vs. Supply Voltage www.DataSheet4U.com 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 www.DataSheet4U.com 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 www.DataSheet4U.com 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.DataSheet4U.com www.irf.com © 2009 International Rectifier 22 IR11672AS ...
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... C E Metric Min Max Min 329.60 330.25 12.976 20.95 21.45 0.824 12.80 13.20 0.503 1.95 2.45 0.767 98.00 102.00 3.858 n/a 18.40 n/a 14.50 17.10 0.570 12.40 14.40 0.488 23 IR11672AS Imperial Max 0.318 0.161 0.484 0.218 0.255 0.208 n/a 0.062 A Imperial 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.DataSheet4U.com 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 Package Type 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 ...