Controller of power conversion circuit and operating method thereof
US12308731B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2023 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Dec 19, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/158
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A controller of a power conversion circuit, coupled to a smart power stage (SPS), controls SPS to convert an input voltage into an output voltage and provides an output current. The SPS provides a current monitoring signal to the controller. The controller includes a control loop, a sampling circuit and a current reconstruction circuit. The control loop is coupled to SPS and generates a pulse-width modulation (PWM) signal to control the operation of SPS. The sampling circuit is coupled to SPS and receives the current monitoring signal. The current monitoring signal is sampled according to PWM signal to obtain a calibration reference value. The current reconstruction circuit is coupled to the control loop and sampling circuit and generates a reconstructed current corresponding to actual output current. The reconstructed current is produced according to an input voltage, a reference voltage and PWM signal and calibrated using the calibration reference value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.