Closed loop stability ramp implementation for Constant On-Time buck converter
US12334811B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2023 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Jul 17, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated circuit device includes: one or more switches of a Buck converter; and a control circuit for the Buck converter, including: a comparator configured to compare a feedback voltage of the Buck converter with a compensation ramp voltage; a pulse generator configured to generate, in response to a rising edge in a comparator output signal, a pulse signal for controlling the Buck converter; a transconductance amplifier (TA) configured to generate, at an output terminal of the TA, a current proportional to a difference between a reference voltage and the feedback voltage; a capacitor coupled between an output terminal of the TA and a reference voltage node; and a ramp signal generator configured to generate the compensation ramp voltage by adding a voltage at the output terminal of the TA and a ramp voltage having a gradient proportional to a switching frequency of the Buck converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.