Semiconductor device for controlling power source
US10284071B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2016 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Mar 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/322
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A semiconductor device for power supply control includes an on/off control signal generation circuit which generates a control signal to turn on or off the switching element, a high-voltage input start terminal to which alternating-current voltage of AC input or voltage rectified in a diode bridge is input, a high-voltage input monitoring circuit connected to the high-voltage input start terminal and monitoring voltage of the high-voltage input start terminal, and a discharging unit connected between the high-voltage input start terminal and a ground point. When the high-voltage input monitoring circuit detects that a time for which the voltage of the high-voltage input start terminal is not lower than a predetermined voltage value for a predetermined period, the discharging unit is turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.