NCP1396ADR2G ON Semiconductor

NCP1396A, NCP1396B Controller, High Performance Resonant Mode, with High and Low Side Drivers NCP1396A,NCP1396B HV R17 R8 R24 D4 R23 FB OVP + R20 M1 U2A C6 U5 U3A 1 16 R10 2 15 L1 Vout C12 3 14 4 R4 R12 D1 D8 + Rt 5 12 R21 M2 11 6 C2 R5 R1 10 7 R11 R7 FB OVP 8 9 T1 C13 D2 Slow Input Fast U2B U3B Input C4 Fmax D9 D6 D7 D3 C11 C9 C8 C10 + R3 C1 C3 C7 C14 U1 R2 R22 R16 R19 R9 R14 R18 R13 R6 Soft-- Timer Skip BO DT start Selection Figure1.TypicalApplicationExample PINFUNCTIONDESCRIPTION PinNo. PinName Function PinDescription 1 CSS Soft--start Selectthesoft--startduration 2 Fmax Frequency clamp A resistor sets themaximumfrequency excursion 3 Ctimer Timer duration Sets thetimer durationinpresenceofafault 4 Rt Timingresistor Connectingaresistor tothis pin,sets theminimumoscillator frequency reachedfor VFB =1V 5 BO Brown--Out Detects low inputvoltageconditions.WhenbroughtaboveVlatch,itfully latches offthecontroller. 6 FB Feedback Injectingcurrentinthis pinincreases theoscillationfrequency uptoFmax. 7 DT Dead--time A simpleresistor adjusts thedead--timewidth 8 FastFault Quick faultdetection Fastshut--downpin.Uponrelease,acleanstartupsequenceoccurs.Canbe usedforskipcyclepurposes. 9 Slow Fault Slow faultdetection Whenasserted,thetimer starts tocountdownandshuts downthecontroller attheendofits timeduration. 10 GND Analogground -- 11 Mlower Low sideoutput Drives thelower sideMOSFET 12 V Supplies thecontroller Thecontrolleracceptsupto20V CC 13 -- -- -- 14 HB Half--bridgeconnection Connects tothehalf--bridgeoutput 15 Mupper Highsideoutput Drives thehigher sideMOSFET 16 Vboot Bootstrappin ThefloatingV supply for theupper stage CC