ir1155s International Rectifier Corp., ir1155s Datasheet
ir1155s
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ir1155s Summary of contents
Page 1
... 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 ...
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... Typical values represent the median values, which are Min. Typ. Max. 10.65 11.3 11.95 9.2 9.8 10.4 1 175 125 200 0.80 0.90 1.00 0.53 0.60 0.67 3 IR1155S =15V is assumed for test condition. CC Units Remarks =1nF, F =181kHz load SW Standby Mode (Inactive Gate, Inactive Internal Oscillator <V FB OLP See State Transition Diagram ...
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... MAX D MIN Symbol Min. Typ OLP V 104.5 106.5 OVP V 100.2 102.2 OVP(RST) V -0.85 -0.77 ISNS I OVP(Bias) 4 IR1155S Max. Units Remarks 200 kHz 200khz:C=430pF approx. 48kHz: C=2nF approx. µ C=2nF 25° C=500pF 25° 14V < V < 19V ...
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... Max -57 -43 -90 - 4.6 4.9 IB(Bias 240 340 5 IR1155S Units Remarks 5 25° < V < 19V CC % -25°C ≤ T ≤ 125°C AMB 5.1 V Line & Temperature Units Remarks 65 µS 58 µ 25°C AMB 90 -25° ...
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... Note 1 – Guaranteed by design, but Not tested in production www.irf.com Min. Typ. Max. 3 -57 -13 220 370 520 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 ...
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... 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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... OCP RESET VISNS(PK) V BIAS - + OVP V BIAS V BIAS VSUMMER RAMP PWM OFF VCOMP 0 RESET Discharge IR1155S OSC V BIAS SET OSCILLATOR GATE OFF Blanking Pulse at Ton BLANK MAX DUTY CYCLE LIMIT GATE OFF MAX DUTY UVLO VCC OK VOVP = 106% V Internal Rail REF & ...
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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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... The resulting is actively discharged as the IC is relegated to the m Sleep mode. This enables the through soft- start when the IC is re-enabled. Since V less than 1V, even logic level signals can be employed to disable and enable the IC. 11 IR1155S IC operates under fixed The switching frequency ...
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... Should VCC pin voltage should drop below UVLO threshold V after start-up, the IC is pushed back into UVLO mode (VCOMP pin is discharged) and VCC pin has to exceed V 12 IR1155S to saturate at its highest value. m signal is directly proportional to the m saturates, the maximum RMS ...
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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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... When this happens, the IC immediately disables the gate drive. 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) ...
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... V 11.5 V 11.0 V 10.5 V 10.0 V 9.5 V 9.0 V 13.0 V 15.0 V 17.0 V Figure 2: Undervoltage Lockout vs. 170.0 150.0 130.0 110.0 100 °C 150 °C 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 ° ...
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... Figure 6: Reference Voltage vs. 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 -50 °C 100 °C 150 °C 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 10: Peak Current Limit Threshold V 200.00 180.00 160.00 140.00 120.00 100.00 80.00 60.00 40.00 400 100 °C 150 °C 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 ° ...
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... Package Details: SOIC8N www.irf.com 18 IR1155S © 2011 International Rectifier ...
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... Metric Imperial 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 19 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 ...