Protection apparatus and method for an isolated type power supply
US8390964B2 · kind B2 · utility
3Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2010 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Apr 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An isolated type power supply includes a transformer, and a power switch and a current sense resistor serially connected to a primary coil of the transformer, and a protection apparatus and method monitor a control signal which is used to switch the power switch in normal operation, and trigger a signal to stop the power from switching when the control signal becomes greater than a threshold. This protection apparatus and method can more quickly detect short circuit of the current sense resistor, and prevent the isolated type power supply from overcurrent impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.