Zero voltage switching supplies connected in parallel

Details Zero voltage switching supplies connected in parallel Zero voltage switching supplies connected in parallel

1997-09-22

1998-08-11

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323282, 363 65, G05F 140, H02M 700

Patent

active

057931917

ABSTRACT:
A composite power supply comprises a master ZVS power supply and a slave ZVS power supply. Using a phase lock loop circuit, the composite power supply detects a phase relationship between switching of the first switch and switching of the second switch, and adjusts timing of switching of the second switch if the first switch and the second switch are not being switched at a predetermined phase relationship with each other. The outputs of the two power supplies are connected together. Thus, the master power supply contributes approximately half the output power and precision control on the output/load voltage while the slave power supply contributes approximately half the output power.

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K. H. Liu and F.C. Lee "Zero-Voltage Switching Technique in DC/DC Converters," IEEE Trans. On Power Electronics, vol. 5, No. 3, Jul. 1990. pp. 293-304.

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