Title:
A DC to DC converter which uses hysteresis control, and a related method
Document Type and Number:
Japanese Patent JP6013607
Kind Code:
B2
Abstract:
A control circuit used to control a DC-DC converter includes a duty cycle control unit to control a duty cycle of the DC-DC converter and a hysteretic control unit to maintain a voltage at an output of the DC-DC converter within a narrow range during certain operational time periods. The hysteretic control unit may maintain the converter output voltage within the range by alternately enabling and disabling the duty cycle control unit based on feedback from the DC-DC converter output. In at least one embodiment, the control circuit is used within LED driver circuitry for driving a plurality of LED channels.
Inventors:
Ravel, Planaph
Scheszinski, Gregory
Arnajas, Bussem
Scheszinski, Gregory
Arnajas, Bussem
Application Number:
JP2015528497A
Publication Date:
October 25, 2016
Filing Date:
August 01, 2013
Export Citation:
Assignee:
Allegro Microsystems LRC
International Classes:
H05B37/02; H02M3/155; H05B44/00
Domestic Patent References:
| JP2010259262A | ||||
| JP2006174630A | ||||
| JP2011233261A | ||||
| JP2010011608A | ||||
| JP2012059839A |
Attorney, Agent or Firm:
Shinjiro Ono
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Kenichi Torii
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Kenichi Torii