Abstract
The widespread use of electronic devices increases the need for compact power factor corrected power supplies. This paper describes an isolated power factor corrected power supply that utilizes the leakage inductance of the isolation transformer to provide boost inductor functionality. The bulk capacitor is in the isolated part of the power supply allowing for controlled startup without dedicated surge limiting components. A control method based on switch timing and input/output voltage measurements is developed to jointly achieve voltage regulation and input power factor control. A prototype design is implemented with detailed measurements and waveforms shown to confirm the desired functionality.
Original language | English |
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Article number | 8481581 |
Pages (from-to) | 6468-6477 |
Number of pages | 10 |
Journal | IEEE Transactions on Power Electronics |
Volume | 34 |
Issue number | 7 |
DOIs | |
Publication status | Published - Jul 2019 |
Keywords
- AC-DC power conversion
- power factor correction
- transformer leakage inductance