Constant on-time controller
US9013164B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2014 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Mar 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A constant on-time controller, comprising a ripple generator, a comparing circuit and a logic control circuit, is provided. The ripple generator generates a ripple signal, which is injected into one of a voltage reference signal and a voltage detection signal to form a ripple modulated signal with ripple information. The comparing circuit compares the ripple modulated signal with the other of the voltage reference signal and the voltage detection signal and accordingly generates a comparison result signal. The logic control circuit generates a control signal with a fixed pulse width according to the comparison result signal. The ripple generator has a level modulation circuit for modulating an amplitude of the ripple modulated signal to make the amplitude within an preset range under different applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.