Title:
DC-DC CONVERTER
Document Type and Number:
WIPO Patent Application WO/2013/179571
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a DC-DC converter capable of decreasing the undershoot which occurs when a bypass mode is switched to a boosting mode. The DC-DC converter according to the present invention comprises: an error amplifier which outputs the error between an output voltage and a prescribed voltage; a phase compensation impedance element which performs phase compensation and generates an error voltage by accumulating errors from one end; a determination unit which determines whether or not the output voltage from the error amplifier is higher than a reference voltage in accordance with a prescribed voltage and outputs a determination signal indicating the determination result; and a voltage setting unit which, when the determination signal indicates that the output voltage of the error amplifier is lower than the reference voltage, sets the voltage at one end of the phase compensation impedance element higher than the lowest output voltage of the error amplifier, and when the determination signal indicates that the output voltage of the error amplifier is higher than the reference voltage, resets the setting.
Inventors:
ITO SATORU (JP)
Application Number:
PCT/JP2013/002865
Publication Date:
December 05, 2013
Filing Date:
April 26, 2013
Export Citation:
Assignee:
ASAHI KASEI MICRODEVICES CORP (JP)
International Classes:
H02M3/155; H02M1/00
Foreign References:
| JP2007189795A | 2007-07-26 | |||
| JP2010174721A | 2010-08-12 | |||
| JP2010174721A | 2010-08-12 |
Other References:
See also references of EP 2747262A4
Attorney, Agent or Firm:
TANI & ABE, p. c. (JP)
Patent business corporation A valley and Abe patent firm (JP)
Patent business corporation A valley and Abe patent firm (JP)
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