Switching power supply with an auxiliary supply voltage
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
N/A
app pub date -
Aug 1, 2017
filing date -
Sep 15, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A switching power supply includes an output circuit connected to a secondary coil of a transformer via a secondary switching element and a synchronous rectification control circuit controlling ON/OFF of the secondary switching element based on a detected source-drain voltage of the secondary switching element. The synchronous rectification control circuit includes a voltage detection circuit detecting the source-drain voltage, a switch driving circuit switching the secondary switching element ON/OFF based on the detected source-drain voltage, an auxiliary power supply circuit generating an auxiliary supply voltage from said source-drain voltage, a voltage decrease detection circuit detecting an abnormal voltage drop in a DC output voltage of the output circuit, and a power supply switching circuit switching a power supply for the voltage detection circuit and switch driving circuit from the DC output voltage to the auxiliary supply voltage when the abnormal voltage drop is detected.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully