Simulating power supply inductor current
US8760134B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2012 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Nov 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
One embodiment described herein provides a circuit to approximate the inductor current of a power supply that includes a capacitor; charge/discharge circuitry configured to charge the capacitor with a voltage that is proportional to an input voltage rail of the power supply, and discharge the capacitor with a voltage that is proportional to the output voltage of the power supply; and error correction circuitry is configured to adjust the voltage that is proportional to the input voltage rail and the voltage that is proportional to the output voltage based on an instantaneous current of the inductor; and wherein the voltage on the capacitor is proportional to a current associated with the inductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.