Switching frequency controller, voltage converter, and method for controlling switching frequency
US12328123B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2023 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Sep 5, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/193
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switching frequency controller, a voltage converter, and a method are used for controlling switching frequency. The switching frequency controller includes a frequency divider, a frequency detector, an accumulation counter, and an on-time controller. The frequency divider generates a divisional signal having a divisional frequency according to an input signal having a target frequency. The target frequency is 2N times of the divisional frequency. The frequency detector receives the divisional frequency and a switching control signal, and calculate a number of periods that pass by during each cycle of the divisional signal. The number of periods is represented by (N+1) bits. The accumulation counter increases or decreases a control indication value by a predetermined value according to a most significant bit of the number of periods. The on-time controller adjusts an on-time length of the switching control signal according to the control indication value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.