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IR21141SSPBF Datasheet(PDF) 10 Page - International Rectifier |
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IR21141SSPBF Datasheet(HTML) 10 Page - International Rectifier |
10 / 34 page IR21141/IR22141SSPbF www.irf.com © 2009 International Rectifier 10 SCHMITT TRIGGER INPUT SHOOT THROUGH PREVENTION (DT) Deadtime LEVEL SHIFTERS LATCH LOCAL DESAT PROTECTION SOFT SHUTDOWN UV_VBS DETECT di/dt control Driver UV_VCC DETECT LOCAL DESAT PROTECTION SOFTSHUTDOWN di/dt control Driver on/off on/off desat soft shutdown on/off soft shutdown on/off (HS) DesatHS DesatLS on/off (LS) SD FAULT LOGIC managemend (See figure 14) UV_VCC VB HOP HON SSDH DSH VS LOP LON SSDL DSL COM VSS FLT_CLR FAULT/SD SY_FLT LIN HIN VCC FAULT HOLD SSD INPUT HOLD LOGIC OUTPUT SHUTDOWN LOGIC FUNCTIONAL BLOCK DIAGRAM Start-Up Sequence FAULT HO/LO=1 HO=LO=0 UnderVoltage VCC HO=LO=0 Freeze ShutDown UV _VC C UV_VBS FAUL T/SD DS H /L FAULT/SD FAUL T/SD FA U LT /S D UV_VCC DESAT EVENT UnderVoltage VBS HO=0, LO=LIN Soft ShutDown STATE DIAGRAM Stable State − FAULT − HO=LO=0 (Normal operation) − HO/LO=1 (Normal operation) − UNDERVOLTAGE VCC − SHUTDOWN (SD) − UNDERVOLTAGE VBS − FREEZE Temporary State − SOFT SHUTDOWN − START UP SEQUENCE System Variable − FLT_CLR − HIN/LIN − UV_VCC − UV_VBS − DSH/L − SY_FLT − FAULT/SD NOTE 1: A change of logic value of the signal labeled on lines (system variable) generates a state transition. NOTE 2: Exiting from UNDERVOLTAGE VBS state, the HO goes high only if a rising edge event happens in HIN. |
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