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Low Power Very High Frequency Switch-Mode Power Supply with 50 V Input and 5 V Output

Authors
Publisher
I E E E
Publication Date
Keywords
  • Resonant Power Conversion
  • Vhf Circuits
  • Dc-Dc Power Conversion
  • Switched Mode Power Supplies
  • Rectifiers
  • Inverters
Disciplines
  • Design

Abstract

This paper presents the design of a resonant converter with a switching frequency in the very high frequency<br/>range (30-300 MHz), a large step down ratio (10 times) and low output power (1 W). Several different inverters<br/>and rectifiers are analyzed and compared. The class E inverter and rectifier are selected based on complexity and<br/>efficiency estimates. Three different power stages are implemented; one with a large input inductor, one with a switch with small capacitances and one with a switch with low on resistance. The power stages are designed with the same specifications and efficiencies from 60:7&#x100000;82:9% are achieved

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