DC-DC controller having transient response enhancement
US9116534B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2013 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Jul 11, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1566
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC-DC controller is provided. The DC-DC controller is connected to an output stage and a load, and the output stage is connected to the load through an output inductor. The DC-DC controller includes an error amplifier, a pulse width modulation (PWM) generation circuit and a compensation circuit. A first input terminal of the error amplifier is connected to one terminal of the output inductor. A second terminal of the error amplifier receives a reference voltage. The PWM generation circuit is connected to the error amplifier and provides a PWM signal to the output stage. The compensation circuit is at least connected to an output terminal of the error amplifier. The compensation circuit includes an adjustable capacitor circuit. The adjustable capacitor circuit adjusts an equivalent capacitance value according to a change of the load dynamically, so as to speed up a reaction rate in the transient response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.