Title:
POWER SUPPLY CONTROL CIRCUIT, AND MEDICAL LIQUID ADMINISTRATION DEVICE COMPRISING SAID POWER SUPPLY CONTROL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2020/195489
Kind Code:
A1
Abstract:
[Problem] To provide a power supply control circuit capable of saving power. [Solution] This power supply control circuit comprises: a microcomputer 164 for controlling the operation of a control object; a power supply unit 170 for supplying power to the microcomputer 164; a power supply switch 161 connecting the power supply unit 170 and the microcomputer 164 together; a bypass circuit 166 having a MOSFET switch 162 and capable of holding a connection between the power supply unit 170 and the microcomputer 164, bypassing the power supply switch 161; and a shut-off circuit 167 having a MOSFET switch 163 and disposed between the bypass circuit 166 and the microcomputer 164. When the MOSFET switch 162 is in an OFF state, leakage current occurring between the microcomputer 164 and the power supply unit 170 via the bypass circuit 166 is shut off by the shut-off circuit 167. When the MOSFET switch 163 turns ON from a switch-on signal output from the microcomputer 164, the MOSFET switch 162 turns ON, and the bypass circuit 166 holds the connection between the power supply unit 170 and the microcomputer 164, bypassing the power supply switch 161.
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Inventors:
YAKUSHIJI YUSUKE (JP)
Application Number:
PCT/JP2020/007771
Publication Date:
October 01, 2020
Filing Date:
February 26, 2020
Export Citation:
Assignee:
TERUMO CORP (JP)
International Classes:
A61M5/142; G06F1/26; G06F1/3228; G06F1/3287; G06F1/329
Foreign References:
| JPH05265599A | 1993-10-15 | |||
| JP2015128336A | 2015-07-09 | |||
| JPH10240392A | 1998-09-11 | |||
| JP2015181869A | 2015-10-22 |
Other References:
See also references of EP 3925644A4
Attorney, Agent or Firm:
HATTA & ASSOCIATES (JP)
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