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Patent Searching and Data


Title:
VOLTAGE REGULATOR AND ON-VEHICLE BACKUP POWER SOURCE
Document Type and Number:
WIPO Patent Application WO/2020/230604
Kind Code:
A1
Abstract:
According to the present invention, a configuration, in which an output can be forcibly stopped when an output current exceeds a criterion, is achieved while suppressing the complication of a circuit scale. In the voltage regulator (10), a second transistor (42) is in an electrification state when a control unit (60) is in an operation state in which an operation voltage is applied to a base of the second transistor (42). In the operation state, a Zener diode (51) sets the voltage of a second conductive path (92) as a voltage according to a voltage across both ends of the Zener diode (51). In the operation state, a current according to an addition value obtained by adding a value of a current flowing in a second resistor part (32), a value of a current flowing in a third resistor part (33), and a value of a current flowing in the Zener diode (51) flows in a ground-side resistor part (37). The control unit (60) stops the output of the operation voltage when the voltage of the second conductive path (92) becomes equal to or lower than a threshold value.

Inventors:
SHIMAMOTO KAZUSHI (JP)
SUGISAWA YUUKI (JP)
Application Number:
PCT/JP2020/017929
Publication Date:
November 19, 2020
Filing Date:
April 27, 2020
Export Citation:
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Assignee:
AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
G05F1/56; H02J7/00; H02J9/06
Foreign References:
JPH11305855A1999-11-05
JP2010055450A2010-03-11
Attorney, Agent or Firm:
GRANDOM PATENT LAW FIRM (JP)
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