Title:
電源装置と、電源装置の閾値を設定する方法
Document Type and Number:
Japanese Patent JP7488111
Kind Code:
B2
Abstract:
To provide a power supply device in which a threshold value for determining an overload current is set for each device and used for an actual overload current determination.SOLUTION: A power supply device (DC/DC converter 1) includes: a current detecting unit 22 that detects output current flowing to a load device 3; a comparison unit 23 that determines an existence of overload current by comparing the detected output current with a threshold value; and a control circuit 20 that controls the output current to be equal to or less than the maximum allowable current of the load device 3. When a reference current that is 1/n (n is a number of 2 or more) of the maximum allowable current is passed through the load device 3, a digital value that corresponds to the current and is monotonously and discretely time-varied is inputted to the comparison unit 23 instead of the threshold value. The control circuit 20 sets as the threshold value a value obtained by multiplying a digital vale by n times when the output of the comparison unit 23 is switched according to the comparison of the reference current and the digital value.SELECTED DRAWING: Figure 1
Inventors:
Hideaki Watanabe
Ananda Bitter Nage
▲濱▼田 健志
Yohei Fujii
Ananda Bitter Nage
▲濱▼田 健志
Yohei Fujii
Application Number:
JP2020091526A
Publication Date:
May 21, 2024
Filing Date:
May 26, 2020
Export Citation:
Assignee:
FDK Corporation
International Classes:
H02M3/145
Domestic Patent References:
| JP2001103651A | ||||
| JP2001255948A | ||||
| JP2020035514A |
Attorney, Agent or Firm:
Patent Attorney Corporation Aihara International Intellectual Property Office