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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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HT45F4MA Fiches technique(PDF) 104 Page - Holtek Semiconductor Inc |
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HT45F4MA Fiches technique(HTML) 104 Page - Holtek Semiconductor Inc |
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104 / 145 page  Rev. 1.20 10� De�e��e� 1�� 201� Rev. 1.20 105 De�e��e� 1�� 201� HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU Complementary PWM Output ThedeviceprovidesacomplementaryoutputpairofsignalswhichcanbeusedasaPWMdriver signal.ThesignalissourcedfromtheTM1outputsignal,TP1.ForPMOStypeuppersidedriving, thePWMoutputisanactivelowsignalwhileforNMOStypelowersidedrivingthePWMoutput isanactivehighsignal.WhenthesecomplementaryPWMoutputsarebothusedtodrivethe upperandlowsides,thedeadtimegeneratorwillautomaticallybeenabledandadeadtime,which isprogrammableusingtheDTPSCandDTbitsintheCPRregister,willbeinsertedtoprevent excessiveDCcurrents.Thedeadtimewillbeinsertedwhenevertherisingedgeofthedeadtime generatorinputsignaloccurs.Withadeadtimeinsertion,theoutputsignalsareeventuallysent outtotheexternalpowertransistors.Thedeadtimegeneratorwillonlybeenabledifbothofthe complementaryoutputsareused,asdeterminedbytheOUTCPbitsintheTMPCregister. TP1 DeadTime Generator DTPSC[1:0] Prescaler fH A B DT[2:0] E C D PWMH (drivinguppersidePMOS,activelow) PWML (drivinglowersideNMOS,activehigh) fD OUTCP[1:0] Complementary PWM Output Block Diagram TP1 A B C D E DeadTime DeadTime DeadTime DeadTime DeadTime DeadTime Complementary PWM Output Waveform |
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