Pulse-width Modulated DC-DC Power Converters.pdf

1、Pulse-width Modulated DCDCPower ConvertersMARIAN K.KAZIMIERCZUKWright State UniversityDayton,Ohio,USAA John Wiley and Sons,Ltd,PublicationPulse-width Modulated DCDCPower ConvertersPulse-width Modulated DCDCPower ConvertersMARIAN K.KAZIMIERCZUKWright State UniversityDayton,Ohio,USAA John Wiley and So

2、ns,Ltd,PublicationThis edition first published 2008 2008 John Wiley&Sons,LtdRegistered officeJohn Wiley&Sons Ltd,The Atrium,Southern Gate,Chichester,West Sussex,PO19 8SQ,United KingdomFor details of our global editorial offices,for customer services and for information about how to apply forpermissi

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7、services.If professionaladvice or other expert assistance is required,the services of a competent professional should be sought.A catalogue record for this book is available from the British Library.ISBN:978-0-470-77301-7(HB)Typeset by Laserwords Private Limited,Chennai,IndiaPrinted and bound by Mar

8、kono Print Media Pte Ltd.SingaporeTo my familyContentsPrefacexixAbout the Author xxiList of Symbols xxiii1Introduction11.1Classification of Power Supplies11.2Basic Functions of Voltage Regulators31.3Power Relationships in DCDC Converters51.4DC Transfer Functions of DCDC Converters51.5Static Characte

9、ristics of DC Voltage Regulators61.6Dynamic Characteristics of DC Voltage Regulators91.7Linear Voltage Regulators121.7.1Series Voltage Regulator131.7.2Shunt Voltage Regulator141.8Topologies of PWM DCDC Converters171.9Relationships among Current,Voltage,Energy,and Power181.10Electromagnetic Compatibi

10、lity191.11Summary201.12References201.13Review Questions211.14Problems222Buck PWM DCDC Converter232.1Introduction232.2DC Analysis of PWM Buck Converter for CCM232.2.1Circuit Description232.2.2Assumptions272.2.3Time Interval 0 t DT272.2.4Time Interval DT t T282.2.5Device Stresses for CCM292.2.6DC Volt

11、age Transfer Function for CCM29viiiCONTENTS2.2.7Boundary between CCM and DCM302.2.8Ripple Voltage in Buck Converter for CCM322.2.9Switching Losses with Linear MOSFET OutputCapacitance372.2.10Switching Losses with Nonlinear MOSFET OutputCapacitance392.2.11Power Losses and Efficiency of Buck Converter

12、 for CCM422.2.12DC Voltage Transfer Function of Lossy Converter forCCM462.2.13MOSFET Gate-drive Power472.2.14Design of Buck Converter for CCM482.3DC Analysis of PWM Buck Converter for DCM512.3.1Time Interval 0 t DT542.3.2Time Interval DT t (D+D1)T562.3.3Time Interval(D+D1)T t T572.3.4Device Stresses

13、 for DCM572.3.5DC Voltage Transfer Function for DCM572.3.6Maximum Inductance for DCM592.3.7Power Losses and Efficiency of Buck Converter for DCM612.3.8Design of Buck Converter for DCM632.4Buck Converter with Input Filter692.5Buck Converter with Synchronous Rectifier692.6Buck Converter with Positive

14、Common Rail722.7Tapped-inductor Buck Converters742.7.1Tapped-inductor Common-diode Buck Converter742.7.2Tapped-inductor Common-transistor Buck Converter762.7.3WatkinsJohnson Converter762.8Multiphase Buck Converter772.9Summary792.10References812.11Review Questions812.12Problems823Boost PWM DCDC Conve

15、rter853.1Introduction853.2DC Analysis of PWM Boost Converter for CCM853.2.1Circuit Description853.2.2Assumptions883.2.3Time Interval 0 t DT883.2.4Time Interval DT t T893.2.5DC Voltage Transfer Function for CCM903.2.6Boundary between CCM and DCM913.2.7Ripple Voltage in Boost Converter for CCM933.2.8P

16、ower Losses and Efficiency of Boost Converter for CCM953.2.9DC Voltage Transfer Function of Lossy Boost Converterfor CCM973.2.10Design of Boost Converter for CCM993.3DC Analysis of PWM Boost Converter for DCM1033.3.1Time Interval 0 t DT105CONTENTSix3.3.2Time Interval DT t (D+D1)T1063.3.3Time Interva

17、l(D+D1)T t T1083.3.4Device Stresses for DCM1083.3.5DC Voltage Transfer Function for DCM1083.3.6Maximum Inductance for DCM1123.3.7Power Losses and Efficiency of Boost Converter for DCM1123.3.8Design of Boost Converter for DCM1153.4Bidirectional Buck and Boost Converters1223.5Tapped-inductor Boost Con

18、verters1243.5.1Tapped-inductor Common-diode Boost Converter1263.5.2Tapped-inductor Common-load Boost Converter1263.6Duality1273.7Power Factor Correction1293.7.1Power Factor1293.7.2Boost Power Factor Corrector1323.8Summary1343.9References1353.10Review Questions1363.11Problems1364Buck-boost PWM DCDC C

19、onverter1394.1Introduction1394.2DC Analysis of PWM Buck-boost Converter for CCM1394.2.1Circuit Description1394.2.2Assumptions1404.2.3Time Interval 0 t DT1424.2.4Time Interval DT t T1424.2.5DC Voltage Transfer Function for CCM1434.2.6Device Stresses for CCM1444.2.7Boundary between CCM and DCM1454.2.8

20、Ripple Voltage in Buck-boost Converter for CCM1464.2.9Power Losses and Efficiency of the Buck-boostConverter for CCM1494.2.10DC Voltage Transfer Function of Lossy Buck-boostConverter for CCM1514.2.11Design of Buck-boost Converter for CCM1534.3DC Analysis of PWM Buck-boost Converter for DCM1594.3.1Ti

21、me Interval 0 t DT1604.3.2Time Interval DT t (D+D1)T1624.3.3Time Interval(D+D1)T t T1624.3.4Device Stresses of the Buck-boost Converter in DCM1624.3.5DC Voltage Transfer Function of the Buck-boostConverter for DCM1634.3.6Maximum Inductance for DCM1664.3.7Power Losses and Efficiency of the Buck-boost

22、 Converterin DCM1664.3.8Design of Buck-boost Converter for DCM1684.4Bidirectional Buck-boost Converter1744.5Synthesis of Buck-boost Converter175xCONTENTS4.6Synthesis of Boost-buck(Cuk)Converter1774.7Noninverting Buck-boost Converters1784.7.1Cascaded Noninverting Buck-boost Converters1784.7.2Four-tra

23、nsistor Noninverting Buck-boost Converters1794.8Tapped-inductor Buck-boost Converters1814.8.1Tapped-inductor Common-diode Buck-boost Converter1814.8.2Tapped-inductor Common-transistor Buck-boostConverter1824.8.3Tapped-inductor Common-load Buck-boost Converter1834.8.4Tapped-inductor Common-source Buc

24、k-boost Converter1844.9Summary1854.10References1864.11Review Questions1874.12Problems1875Flyback PWM DCDC Converter1895.1Introduction1895.2Transformers1905.3DC Analysis of PWM Flyback Converter for CCM1915.3.1Derivation of PWM Flyback Converter1915.3.2Circuit Description1925.3.3Assumptions1935.3.4Ti

25、me Interval 0 t DT1955.3.5Time Interval DT t T1965.3.6DC Voltage Transfer Function for CCM1975.3.7Boundary between CCM and DCM1985.3.8Ripple Voltage in Flyback Converter for CCM1995.3.9Power Losses and Efficiency of Flyback Converter forCCM2015.3.10DC Voltage Transfer Function of Lossy Converter for

26、CCM2045.3.11Design of Flyback Converter for CCM2055.4DC Analysis of PWM Flyback Converter for DCM2115.4.1Time Interval 0 t DT2125.4.2Time Interval DT t (D+D1)T2135.4.3Time Interval(D+D1)T t T2145.4.4DC Voltage Transfer Function for DCM2145.4.5Maximum Magnetizing Inductance for DCM2185.4.6Ripple Volt

27、age in Flyback Converter for DCM2185.4.7Power Losses and Efficiency of Flyback Converter forDCM2195.4.8Design of Flyback Converter for DCM2225.5Multiple-output Flyback Converter2285.6Bidirectional Flyback Converter2295.7Ringing in Flyback Converter2295.8Flyback Converter with Active Clamping2325.9Tw

28、o-transistor Flyback Converter2335.10Summary2345.11References235CONTENTSxi5.12Review Questions2365.13Problems2366Forward PWM DCDC Converter2396.1Introduction2396.2DC Analysis of PWM Forward Converter for CCM2396.2.1Derivation of Forward PWM Converter2396.2.2Time Interval 0 t DT2416.2.3Time Interval

29、DT t DT+tm2436.2.4Time Interval DT+tm t T2456.2.5Maximum Duty Cycle2466.2.6Device Stresses2466.2.7DC Voltage Transfer Function for CCM2476.2.8Boundary between CCM and DCM2486.2.9Ripple Voltage in Forward Converter for CCM2486.2.10Power Losses and Efficiency of Forward Converter forCCM2506.2.11DC Vol

30、tage Transfer Function of Lossy Converter forCCM2536.2.12Design of Forward Converter for CCM2546.3DC Analysis of PWM Forward Converter for DCM2616.3.1Time Interval 0 t DT2616.3.2Time Interval DT t DT+tm2646.3.3Time Interval DT+tm t (D+D1)T2656.3.4Time Interval(D+D1)T t T2656.3.5DC Voltage Transfer F

31、unction for DCM2666.3.6Maximum Inductance for DCM2706.3.7Power Losses and Efficiency of Forward Converter forDCM2706.3.8Design of Forward Converter for DCM2736.4Multiple-output Forward Converter2806.5Forward Converter with Synchronous Rectifier2816.6Forward Converters with Active Clamping2816.7Two-s

32、witch Forward Converter2836.8Summary2836.9References2846.10Review Questions2856.11Problems2867Half-bridge PWM DCDC Converter2897.1Introduction2897.2DC Analysis of PWM Half-bridge Converter for CCM2897.2.1Circuit Description2897.2.2Assumptions2917.2.3Time Interval 0 t DT2927.2.4Time Interval DT t T/2

33、2957.2.5Time Interval T/2 t T/2+DT2967.2.6Time Interval T/2+DT t T297xiiCONTENTS7.2.7Device Stresses2977.2.8DC Voltage Transfer Function of Lossless Half-bridgeConverter for CCM2987.2.9Boundary between CCM and DCM2997.2.10Ripple Voltage in Half-bridge Converter for CCM2997.2.11Power Losses and Efficiency of Half-bridge Converter forCCM3017.2.12DC Voltage Transfer Function of Lossy Converter forCCM