Title:
スイッチングレギュレータ及びその制御装置
Document Type and Number:
Japanese Patent JP6993867
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a current mode control switching regulator circumventing the impact of ringing noise.SOLUTION: A switching regulator 1 converts a current IH flowing to a high-side transistor TH1 and a current IL flowing to a low-side transistor TL1 into voltages by respective on-resistances, and then amplifies these voltages by high-side amplification means 6 and a low-side transistor amplification means 7, respectively. The amplified high-side amplification voltage VHα and low-side amplification voltage VLβ are summed up by summation means 8, and smoothed by a lowpass filter 10, thus setting and adjusting the DC level of a slop signal Vsl. A slope signal Vsl and an error signal Verr are compared by a PWM comparator 5, and a reset signal Soff having a controlled pulse duty ratio is outputted to the comparator 5.SELECTED DRAWING: Figure 1A
Inventors:
Yosuke Fukumoto
Application Number:
JP2017246421A
Publication Date:
January 14, 2022
Filing Date:
December 22, 2017
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
H02M3/155
Domestic Patent References:
| JP2010183664A | ||||
| JP2017017982A | ||||
| JP2015216712A |
Foreign References:
| US20160164412 |
Attorney, Agent or Firm:
Patent Business Corporation Sano Patent Office
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