Current mode switching regulator and operating method with offset circuitry to emulate a transient load step response
US10534384B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2017 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | May 3, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current mode switching regulator circuit and operating method includes a variable duty cycle power switch controller, a voltage feedback loop that provides a feedback signal based on the output voltage, a current feedback loop that provides a current sense signal based on the output current, and an offset circuit having an external signal input and coupled to the current feedback loop. The power switch controller controls the switching regulator circuit to generate an output voltage and an output current. The offset circuit is configured to provide an offset output control signal, independently of the voltage feedback loop, to control the power switch controller so as to vary a duty cycle of the power switch controller based on the current sense signal and an external offset signal applied to the external signal input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.