US 11,841,721 B2
Voltage regulator and in-vehicle backup power supply
Kazushi Shimamoto, Yokkaichi (JP); and Yuuki Sugisawa, Yokkaichi (JP)
Assigned to AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
Appl. No. 17/610,568
Filed by AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
PCT Filed Apr. 27, 2020, PCT No. PCT/JP2020/017930
§ 371(c)(1), (2) Date Nov. 11, 2021,
PCT Pub. No. WO2020/230605, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 2019-091925 (JP), filed on May 15, 2019.
Prior Publication US 2022/0221887 A1, Jul. 14, 2022
Int. Cl. G05F 1/56 (2006.01); G06F 1/30 (2006.01); H02J 9/06 (2006.01)
CPC G05F 1/56 (2013.01) [G06F 1/30 (2013.01); H02J 9/06 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A voltage regulator configured to receive an input voltage based on power supplied via a first conductive path, and output an output voltage to a second conductive path, the voltage regulator comprising:
a control unit having a plurality of output terminals;
an input circuit unit electrically connected to the plurality of output terminals;
a transistor having a first terminal electrically connected to the input circuit unit;
a switch electrically connected to the first conductive path, the second conductive path, and the transistor; and
an element portion interposed between a second terminal of the transistor and the second conductive path,
wherein the control unit operates to switch a state of each of the plurality of output terminals to either a first state or a second state,
the input circuit unit applies a voltage corresponding to a combination of the first states of the plurality of output terminals to the first terminal,
electricity flows through the transistor when at least one of the output terminals is in the first state,
the switch is turned on when electricity flows through the transistor, and
the element portion sets the output voltage applied to the second conductive path to a voltage corresponding to the voltage applied to the first terminal.