Control circuit of step-down DC-DC converter, control circuit of step-up DC-DC converter and step-up/step-down DC-DC converter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 25, 2014
Issued Date -
N/A
app pub date -
Nov 27, 2012
filing date -
Jun 12, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A DC-DC converter or the like capable of generating a stable output voltage is provided. A control circuit 11 of a current mode step-down DC-DC converter 1 includes a slope compensation circuit SC and an offset circuit IF1. The slope compensation circuit SC adds an increase gradient m2 due to slope compensation to an increase gradient of a coil current waveform Vsense in a range wherein an ON period Ton of a switch SW1 exceeds ½ of an operating cycle T. An offset circuit IF1 applies an offset voltage Voffset which becomes smaller depending on the ON period Ton in excess of ½ of an operating cycle T, to a coil current waveform Vsense.
First Claim
Family
International Classification(s)
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