Name
Title | ||
|---|---|---|
A Novel Digital Control Method of Primary-Side Regulated Flyback With Active Clamping Technique |
Abstract | ||
|---|---|---|
Because of the different working principles between conventional flyback and active-clamped flyback (ACF), the existing primary-side regulation (PSR) technology cannot be applied to ACF. And in order to achieve PSR of ACF, a low-cost digital sampling method based on the auxiliary winding of the transformer is proposed. In the conventional peak current mode (PCM) controlled ACF, the sampling resistor of primary current may introduce additional power loss, and high-frequency oscillations during sampling may reduce system's stability. Therefore, a digital feedback-feedforward control (FFC) method is proposed to eliminate the sampling resistor. The stability of the proposed control method and its influence on the dynamic response are studied. In addition, since GaN device has higher power loss during reverse conduction than its Si counterpart, design considerations of reverse conduction time of power switches are also discussed in this paper. All control methods and design considerations are verified on a GaN-based 12V-3A ACF, and the proposed control strategy is implemented by FPGA. |
Year | DOI | Venue |
|---|---|---|
2021 | 10.1109/TCSI.2020.3039550 | IEEE Transactions on Circuits and Systems I: Regular Papers |
Keywords | DocType | Volume |
Active clamped flyback (ACF),primary-side regulation (PSR),feedback-feedforward control (FFC),gallium nitride (GaN) | Journal | 68 |
Issue | ISSN | Citations |
2 | 1549-8328 | 1 |
PageRank | References | Authors |
0.41 | 0 | 5 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Minggang Chen | 1 | 1 | 0.41 |
| Shen Xu | 2 | 1 | 0.41 |
| Linlin Huang | 3 | 1 | 1.09 |
| Weifeng Sun | 4 | 26 | 20.68 |
| Longxing Shi | 5 | 116 | 39.08 |