Circuit for controlling converters, corresponding converter device and method
US12267011B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2020 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | Nov 11, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A half bridge converter is controlled by a circuit including a differential circuit receiving a reference signal and a feedback signal which is a function of an output signal from the converter. The half bridge includes hand and low side switches. A comparator generates a PWM signal for controlling the converter as a function of the duty cycle of the PWM signal in response to a signal at an intermediate node between the hand and low side switches and an output of the differential circuit. A gain circuit block coupled between the intermediate node and the input of the comparator applies a ramp signal to the input of the comparator which is a function of the signal at the intermediate node. A variable gain is applied by the gain circuit block in order to keep a constant value for the duty cycle of said PWM signal irrespective of converter operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.