IR1155STRPBF International Rectifier, IR1155STRPBF Datasheet
IR1155STRPBF
Specifications of IR1155STRPBF
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IR1155STRPBF Summary of contents
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... OVP/EN pin internal filtering for higher noise immunity • 1.5A peak gate drive • Latch immunity and ESD protection UVLO, soft-start and COM GATE 2 7 VCC FREQ VCC 3 6 ISNS VFB 4 5 OVP COMP IR1155S Feb 28, 2011 IR1155S Package VOUT RTN © 2011 International Rectifier ...
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... J T -55 150 S R 128 θJA P 976 D Symbol Min. Typ - IR1155S Industrial MSL2 260°C Class A Class I, Level A (per JESD78) Yes Units Remarks °C °C °C 25°C AMB Max. Units Remarks 19 V 125 °C 200 kHz © 2011 International Rectifier ...
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... SW Standby Mode (Inactive Gate, Inactive Internal Oscillator <V FB OLP See State Transition Diagram 0. Sleep Mode (Inactive Gate, Inactive Oscillator <V OVP SLEEP,OFF See State Transition Diagram IC Enable threshold, V Bias on OVP pin IC Disable threshold, V Bias on OVP pin © 2011 International Rectifier ...
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... V < 19V CC % -25°C ≤ T ≤ 125° Line & Temperature Pulse Skipping Max. Units Remarks Bias on VFB pin REF 108 Bias on OVP/EN pin REF 104 Bias on OVP/EN pin REF -0.69 V Bias on ISNS pin -0.2 µA © 2011 International Rectifier ...
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... AMB -30 µ 25°C AMB -20 -25°C ≤T ≤ 125°C AMB msec R = 1kΩ, C GAIN ZERO C = 0.01uF POLE @ 100µA steady state 1.4 V current 5.2 V -0.2 µA V =4.9V FB 0.25 V 5.4 V 460 mV © 2011 International Rectifier = 0.33uF, ...
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... Min. Typ. Max. Units 0 1.5 0.08 6 IR1155S Units Remarks V/V kHz - Average current mode, Note 1 mV Note 1 µA ns Remarks V I =200mA GATE V Internal Gate clamp 11. 1nF LOAD 1nF LOAD 10nF, Note 1 LOAD 20mA GATE © 2011 International Rectifier ...
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... Lead Assignments & Definitions Lead Assignment www.irf.com Pin# Symbol Description 1 COM Ground 2 FREQ Frequency Set ISNS 3 Current Sense OVP 4 Output Over Voltage Detect / Enable 5 COMP Voltage Loop Compensation 6 VFB Output Voltage Sense 7 VCC IC Supply Voltage 8 GATE Gate Drive Output 7 IR1155S © 2011 International Rectifier ...
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... MAX DUTY CYCLE LIMIT GATE OFF MAX DUTY UVLO VCC OK VOVP = 106% V Internal Rail REF & Precision V Reference REF 80% V REF SLEEP (POWER VOUV = 50% V OFF) REF VOLP = 19%V REF VSLEEP 250mV © 2011 International Rectifier V BIAS VCC GATE VCC COM ...
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... State & Transition Diagrams Note: Soft-Start & Normal modes are essentially the same (differentiation above is for purpose of clarity only) www.irf.com 9 IR1155S © 2011 International Rectifier ...
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... Timing Diagrams 106.5% V 100% V 19% V STAND_BY www.irf.com REF REF REF SOFT OVP (OLP) START Output Protection UVLO UVLO NORMAL NORMAL VCC Undervoltage Lockout VCC Undervoltage Lockout 10 IR1155S 102.2% V REF STAND-BY NORMAL (OLP CC(ON) CC(ON CC(UVLO) CC(UVLO) UVLO UVLO © 2011 International Rectifier ...
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... IC. 11 IR1155S IC operates under fixed The switching frequency and current CC,ON . Should VCC pin CC,START again to re-start operation. CC,ON by pulling OVP/EN pin below the Sleep , even while VCC is above SLEEP(OFF) SLEEP(OFF) © 2011 International Rectifier switching is user- CC, UVLO is ...
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... For details, please refer to peak current limit threshold in ISNS(PK) threshold clarified that even ISNS(PK) since the averaging . In UVLO mode the CC,ON CC,START CC, UVLO again to re-start operation. CC,ON © 2011 International Rectifier design is IR1155 protection circuit is which is anytime ...
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... IC. This pin is not CC,UVLO internally clamped. Pin GATE: This is the gate drive output of the IC. This drive voltage is internally clamped to 13V(Typ) and provides a drive current of ±1.5A peak with matched rise and fall times. frequency is 13 IR1155S Typical value of threshold. OLP © 2011 International Rectifier ...
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... Gate drive is re-enabled when magnitude of ISNS pin voltage drops below V This state is accessible from both the soft start and normal modes of operation. 14 IR1155S and system COMP,START threshold. When OVP less than V OVP(RST) threshold triggering cycle-by- ISNS(PK) threshold. ISNS(PK) © 2011 International Rectifier ...
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... Figure 4: Startup Current and Sleep 15 IR1155S VCC UV+ VCC UV- -50 °C 0 °C 50 °C 100 °C Temperature Temperature I and I CCSTART SLEEP ISLEEP ICCSTART 90.0 70.0 50.0 -50 °C 0 °C 50 °C 100 °C Temperature Current vs. Temperature © 2011 International Rectifier 150 °C 150 °C ...
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... Figure 8: Voltage Error Amplifier Source & Sink Current vs. Temperature 16 IR1155S 0 °C 50 °C 100 °C 150 °C Temperature Temperature Source |Sink| 0 °C 50 °C 100 °C 150 °C Temperature © 2011 International Rectifier ...
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... Figure 12: Oscillator Frequency vs. 17 IR1155S 0 °C 50 °C 100 °C Temperature vs. Temperature ISNS(PK) Frequency vs. CT 650 900 1150 1400 1650 CT (pF) Programming Capacitor © 2011 International Rectifier 150 °C 1900 ...
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... Package Details: SOIC8N www.irf.com 18 IR1155S © 2011 International Rectifier ...
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... IR1155S 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 © 2011 International Rectifier ...
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... Part Marking Information www.irf.com 20 IR1155S © 2011 International Rectifier ...
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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 21 IR1155S Complete Part Number Quantity 95 IR1155SPBF 2500 IR1155STRPBF © 2011 International Rectifier ...