Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12401286 | Startup circuit for a flyback converter | — | 2025-08-26 |
| 11955896 | Bias power regulator circuit for isolated converters with a wide output voltage range | Richard Lee Valley, Bharath Balaji Kannan | 2024-04-09 |
| 11509227 | Active clamp flyback converter | Cheng Liu | 2022-11-22 |
| 11271483 | Bias power regulator circuit for isolated converters with a wide output voltage range | Richard Lee Valley, Bharath Balaji Kannan | 2022-03-08 |
| 11264903 | Power converter with zero-voltage switching | James M. Walden | 2022-03-01 |
| 11201603 | Active clamp capacitor balancing | Richard Lee Valley, Bharath Balaji Kannan | 2021-12-14 |
| 11005355 | Switching time optimizer for soft switching of an isolated converter | Richard Lee Valley | 2021-05-11 |
| 10886846 | Power converter with switching control | Richard Lee Valley | 2021-01-05 |
| 10862397 | Dual ramp modulation for a switch-mode power supply | Richard Lee Valley | 2020-12-08 |
| 10778081 | Ripple compensation for burst mode control | — | 2020-09-15 |
| 10554133 | Adaptive burst generation for use with a DC-output converter | Bing Lu | 2020-02-04 |
| 10491097 | Switching time optimizer for soft switching of an isolated converter | Richard Lee Valley | 2019-11-26 |
| 10312805 | Current mode control DC-DC converter with single step load transient response | Virginia L. Li, Qiang Li, Fred C. Lee | 2019-06-04 |
| 10243469 | Adaptive burst generation for use with a DC-output converter | Bing Lu | 2019-03-26 |
| 10135341 | Dual ramp modulation for a switch-mode power supply | Richard Lee Valley | 2018-11-20 |
| 10110122 | Transient performance improvement for constant on-time power converters | Syed Bari, Fred C. Lee, Qiang Li | 2018-10-23 |
| 10013007 | Hybrid interleaving structure with adaptive phase locked loop for variable frequency controlled switching converter | Qiang Li, Fred C. Lee | 2018-07-03 |
| 9678521 | External ramp autotuning for current mode control of switching converter | Fred C. Lee, Yingyi Yan, Paolo Mattavelli | 2017-06-13 |
| 9601997 | V^2 power converter control with capacitor current ramp compensation | Yingyi Yan, Fred C. Lee | 2017-03-21 |