Power converter and control method for fault event occurrence
US9825543B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2016 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Aug 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power converter and a control method therefor are provided. The power converter includes a transformer, a primary-side control circuit and a secondary-side control circuit. A primary side of the transformer receives an input voltage, and a secondary side of the transformer generates an output voltage. The primary-side control circuit controls a current switch of a primary winding and switching thereof. The secondary-side control circuit is disposed at the secondary side of the transformer. The secondary-side control circuit comprises a latch circuit. The latch circuit clamps a feedback signal and maintains a clamped status of the feedback signal when an fault event occurs. The primary-side control circuit stops switching the current switch of the primary winding when the feedback signal is clamped, and the latch releases the feedback signal when the output voltage is lower than a default latch voltage value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.