W. ANDREYCAK, "SLUA107 - Phase Shifted, Zero Voltage Transition Design Considerations", Texas Instruments, Application Report, May 1997, 15 pages.
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Titre : W. ANDREYCAK, SLUA107 - Phase Shifted, Zero Voltage Transition Design Considerations, Texas Instruments, Application Report, May 1997, 15 pages.

Cité dans : [DIV095]  Librairie TEXAS INSTRUMENTS - UNITRODE et Notes d'applications diverses, octobre 2013.
Cité dans : [DIV302]  M. DENNIS, SLUA246 - A Comparison Between the BiCMOS UCC3895 Phase Shift Controller and the UC3975, Unitrode Products from Texas Instruments, Application Report, September 2000, 3 pages.

Date : May 1997
Pages : 1 - 15
Lien : SLUA107.pdf - 458 Ko, 15 pages.

This Application Note will highlight the design considerations incurred in a high frequency power supply us-
ing the Phase Shifted Resonant PWM control technique. An overview of this switching technique including
comparisons to existing fixed frequency non-resonant and variable frequency Zero Voltage Switching is in-
cluded. Numerous design equations and associated voltage, current and timing waveforms supporting this
technique will be highlighted. A general purpose Phase Shifted converter design guide and procedure will
be introduced to assist in weighing the various design tradeoffs. An experimental 500 Watt, 48 volt at 10.5
amp power supply design operating from a preregulated 400 volt DC input will be presented as an exam-
ple. Considerations will be given to the details of the magnetic, power switching and control circuitry areas.
A summary of comparative advantages, differences and tradeoffs to other conversion alternatives is included.



[1] : STEIGERWALD, R. and NGO, K; "Full Bridge Lossless Switching Converter", United States Patent #4,864,479
[2] : DALAL, D.; "A 500 KHz Multi-Output Converter rogrammed by theft start interval minimizes power dissipation in twith Zero Voltage Switching", IEEE 1990
[3] : FISHER, NGO and KUO; "A 500 KHz, 250 W DC-DC Converter with Multiple Outputs COntrolled by Phase SHifted PWM and Magnetic Amplifiers", HFPC 1988; HFPC 1988
[4] : ANDREYCAK, W. "Zero Voltage Switching Resonant Power Conversion", UNITRODE Power Supply Design Seminar SEM-700, 1990.
[5] : MWEENE, WRIGHT and SCHLECHT, "A 1 KW, 500 KHz Front-End Converter for a Distributed Power Supply System", IEEE 1989
[6] : ANDREYCAK, W. "Controlling Zero Voltage Switched Power Supplies", HFPC Proceedings 1990
[7] : SABATE¢, VLATKOVIC¢, RIDLEY, LEE and CHO; "Design Considerations for High Voltage, High Power, Full Bridge, Zero Voltage Switched PWM Converter; IEEE APEC 1990
[8] : LOFTI, SABATE¢, and LEE; "Design Optimization of the Zero VOltage Switched PWM Converter", VPEC Seminar 1990
[9] : CHEN, LOFTI and LEE; "Design Tradeoffs in 5V Output Off-line ZVS PWM Converters", Proceedings of the International Telecommunications Energy Conference", Kyoto, Japan 1991

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