IRS27951SPBF International Rectifier, IRS27951SPBF Datasheet
IRS27951SPBF
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IRS27951SPBF Summary of contents
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... Lr COM LO IRS2795 M2 Rg2 Datasheet No. – PD 97556 IRS27951S IRS27952S Product Summary Topology V OFFSET V OUT I & I (typical) 300 mA & 900 Dead-time (programmable) Package Options D1 COUT D2 Cr Rled Rbias Cf2 TL431 © 2010 International Rectifier Apr 5, 2011 Half-Bridge 600 200ns~2us LOAD Rs1 Rs2 ...
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... Recommended Operating Conditions Electrical Characteristics Functional Block Diagram Input/Output Pin Equivalent Circuit Diagram Lead Definitions Lead Assignments State Diagram Application Information and Additional Details Package Details Tape and Reel Details Part Marking Information Ordering Information www.irf.com © 2010 International Rectifier 2 IRS27951S IRS27952S Page ...
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... LLC resonant half-bridge converter. The frequency and dead time can be programmed externally using two external components. The IC offers over current protection using the on state resistance of the low-side MOSFET. The IC can be disabled by externally pulling the voltage at the CT/SD pin below its enable voltage threshold. www.irf.com © 2010 International Rectifier 3 IRS27951S IRS27952S ...
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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. ...
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... Units -0.3 25 -0.3 625 V – 0 – 0 0 0.3 CC --- 2 mA -50 50 V/ns -40 150 ° C -55 150 --- 150 ° C/W --- 833 mW Min. Max. Units 10 Vcc † 600 -3 --- 500 kHz Min. Max. Units 2 100 k 200 2000 © 2010 International Rectifier ...
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... RT=50.5k 4.5 mA RT=7.32k 11 9.4 8.8 V N/A --- 100 BSUV+ 100 V < V EN1 CT/SD RT=50.5k 1 1.5 mA RT=7.32k 7 CT=200pF, 48.9 RT=50.5 k kHz CT=200pF, 299 RT=7.32 k --- V GBD --- V --- A CT/SD 2. --- A 250 ns CT=200pF © 2010 International Rectifier CCUV =0V BS < 4.5V = 600 V - 0.1V < 4.5V < V EN1 ...
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... Vcc-1 --- --- V --- 0.05 0.15 --- 60 --- --- 200 --- ns --- 16 --- --- 65 --- --- --- 25 ns --- 300 --- mA --- 900 --- --- 20 --- --- 3 --- © 2010 International Rectifier 7 IRS27951S IRS27952S Test Conditions IRS27951 IRS27952 GBD GBD I = 20mA GATE I = -20mA GATE C =1nF LOAD C =4.7nF LOAD C =1nF LOAD C =4.7nF LOAD GBD I = 20mA GATE I =-20mA GATE ...
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... Functional Block Diagram www.irf.com © 2010 International Rectifier 8 IRS27951S IRS27952S ...
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... Input/Output Pin Equivalent Circuit VCC ESD Diode RT ESD Diode COM VCC ESD Diode CT R ESD ESD Diode COM www.irf.com Diagrams: R ESD R ESD 9 IRS27951S IRS27952S © 2010 International Rectifier ...
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... VEN1. The IC can also be used to enter sleep mode by externally pulling this pin below VEN2. COM: Logic and Gate drive Ground This is ground potential pin of the integrated control circuit. All internal circuits are referenced to this point. www.irf.com Description 1 VCC CT/ COM LO 5 CCUV- 10 IRS27951S IRS27952S without damage to the IC. This pin is © 2010 International Rectifier ...
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... VS ensures that the pin is not floating during UVLO. VB: High Side floating supply voltage The bootstrap capacitor connected between this pin and VS is charged by the bootstrap diode when the low-side gate-drive is high. www.irf.com © 2010 International Rectifier 11 IRS27951S IRS27952S ...
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... IC is pulled out of sleep mode and the 2V reference voltage EN1 ). When the voltage sensed exceeds VOCP, the IC terminates the blank 12 IRS27951S IRS27952S pin exceeds the V turn on threshold voltage, CC startup current CT has been exceeded. The RT pin voltage EN1 © 2010 International Rectifier ...
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... VCCON. If the VCC pin voltage drops below the UVLO threshold VCCUVLO at anytime after start-up, the IC is pushed back into UVLO mode. The current consumption in this mode is less than 100uA. www.irf.com Figure 1: VCC Under Voltage Lockout 13 IRS27951S IRS27952S of the low-side MOSFET, DSON © 2010 International Rectifier ...
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... The effective resistance (RSS//RT) at pin#2 during IC power up and the CT capacitor program the start-up frequency of the converter and CT program the minimum operating frequency. www.irf.com © 2010 International Rectifier 14 IRS27951S IRS27952S . At this point, the ...
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... The converter maximum frequency is set by (Rmax//RT) and CT. Figure 2: Typical startup waveforms with soft-start Frequency and Dead-time Calculation The dead time is calculated by the following equation: www.irf.com IRS27951S IRS27952S © 2010 International Rectifier ...
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... Figure 4: Switching frequency and RT selection The maximum duty cycle is given by: www.irf.com Dead-Time vs. CT Value 0 500 1000 CT (pF Teq T Frequency Chart MAX DT 16 IRS27951S IRS27952S 1500 2000 CT=220pF CT=330pF CT=470pF CT=1nF © 2010 International Rectifier ...
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... This protection feature is latched and the IC supply voltage must be pulled below the UVLO threshold and then again above VCCON in order to reset the latch and restart the IC. www.irf.com , even while the IC VCC is above VCCON. This mode allows the EN2 of the low-side MOSFET, the need for DSON 17 IRS27951S IRS27952S © 2010 International Rectifier ...
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... COM pin, don’t share the return with any other signal ground. www.irf.com Figure 6: VS sensing over current protection ) near the respective high voltage portions of the device IRS27951S IRS27952S ) between the V and COM pins. A 1µ © 2010 International Rectifier ...
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... Below is a short list of some of these documents. AN-1160: Design of Resonant Half-Bridge converter using IRS2795(1,2) Control IC DT97-3: Managing Transients in Control IC Driven Power Stages www.irf.com VS node Star connection at COM pin 19 IRS27951S IRS27952S Signal components are kept away from switching nodes © 2010 International Rectifier ...
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... C 150 ° C Figure 10: Startup Current and Sleep Current vs. 20 IRS27951S IRS27952S VCC UV+ VCC UV- 0 ° ° C 100 ° C 150 ° C Temperature I and I CCSTART SLEEP ISLEEP ICCSTART 0 ° °C 100 °C 150 °C Temperature Temperature © 2010 International Rectifier ...
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... C 150 ° C -50 ° C Figure 14: Dead-Time vs Temperature 21 IRS27951S IRS27952S VBS UV+ VBS UV- 0 ° ° C 100 °C 150 °C Temperature Temperature Dead Time @ CT=200pF 0 ° ° C 100 ° C 150 ° C Temperature © 2010 International Rectifier ...
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... Tr_LO 30 Tf_LO 1E-7 2E-7 3E-7 4E-7 5E-7 6E-7 7E-7 8E-7 9E-7 1E-6 100 ° C 150 ° C Figure 18: VS Negative Transient Safety 22 IRS27951S IRS27952S 0 ° ° C 100 ° C 150 ° C Temperature Failure Voltage Pulse Width (s) Operation Area © 2010 International Rectifier ...
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... Package Details: www.irf.com © 2010 International Rectifier 23 IRS27951S IRS27952S ...
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... Metric Imperial Min Max Min Max 330.25 12.976 13.001 21.45 0.824 0.844 13.20 0.503 0.519 2.45 0.767 0.096 102.00 3.858 4.015 n/a 18.40 n/a 0.724 17.10 0.570 0.673 14.40 0.488 0.566 24 IRS27951S IRS27952S © 2010 International Rectifier ...
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... Part Marking Information Sxxxxx Part number YWW ? Date code Pin 1 Identifier ? MARKING CODE Lead Free Released P Non-Lead Free Released www.irf.com IR logo ? XXXX Lot Code (Prod mode – 4 digit SPN code) Assembly site code Per SCOP 200-002 25 IRS27951S IRS27952S © 2010 International Rectifier ...
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... Standard Pack Form Quantity Tube/Bulk Tape and Reel 2500 Tube/Bulk Tape and Reel 2500 http://www.irf.com/technical-info/ WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 26 IRS27951S IRS27952S Complete Part Number 95 IRS27951SPBF IRS27951STRPBF 95 IRS27952SPBF IRS27951STRPBF © 2010 International Rectifier ...