Title:
電源装置
Document Type and Number:
Japanese Patent JP7030879
Kind Code:
B2
Abstract:
To provide a power supply device is low in price and small in power loss.SOLUTION: A power supply device 301 includes a triangular wave generation circuit 10, a bias superimposition circuit 20, and a control circuit 40. The triangular wave generation circuit 10 combines two switches, two inductors, and one output capacitor between an input end T1 and a connection end T2, and outputs a voltage across both the ends of the output capacitor to the connection end T2. The bias superimposition circuit 20 has a circuit configuration for performing switching as to whether a constant voltage is superposed or not superposed on the voltage across both the ends of the output capacitor. The control circuit 40 controls the on/off of the switch of the triangular wave generation circuit 10 so that a waveform of the voltage across both the ends of the output capacitor is synchronized with a voltage waveform generated across both the ends of a load capacitor C7 by a current flowing through a load 50, and controls the switching of the bias superimposition circuit 20.SELECTED DRAWING: Figure 1
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Inventors:
Hitomi Hitomi
Yosuke Mine
Yosuke Mine
Application Number:
JP2020057648A
Publication Date:
March 07, 2022
Filing Date:
March 27, 2020
Export Citation:
Assignee:
Origin Co., Ltd.
International Classes:
H02M9/04; H02M1/08; H03K4/06
Domestic Patent References:
| JP10256881A | ||||
| JP2009176749A |
Foreign References:
| WO2019040949A1 | ||||
| US4275438 |
Attorney, Agent or Firm:
Kenji Okada
Masaaki Hata
Mari Tanaka
Katsuhiro Imashita
Masaaki Hata
Mari Tanaka
Katsuhiro Imashita