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Power supply control device

A power supply control and control terminal technology, applied in the direction of circuit devices, battery circuit devices, collectors, etc.

Active Publication Date: 2021-11-16
AUTONETWORKS TECH LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, when both FETs are off, even if the positive terminal of the battery is connected to the other end of the load by mistake and the negative terminal is connected to the source of one FET, the current will not flow. flows through two parasitic diodes, so no power is supplied to the load

Method used

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Embodiment Construction

[0033] Hereinafter, the present invention will be described in detail based on the drawings showing the embodiments of the present invention.

[0034] figure 1 It is a block diagram showing the configuration of main parts of the power supply system 1 in this embodiment. The power supply system 1 is suitably mounted on a vehicle, and includes a power supply control device 10 , a battery 11 , a conductor 12 and n (n: an integer greater than or equal to 2) loads A1 , A2 , . . . , An. Conductor 12 is, for example, a vehicle body.

[0035] The power supply control device 10 is respectively connected to the conductor 12 , one end of each of the n loads A1 , A2 , . . . , An, and the positive terminal T1 . The other end of each of the n loads A1 , A2 , . . . , An and the negative terminal T2 are connected to the conductor 12 . The battery 11 is detachably connected between the positive terminal T1 and the negative terminal T2. The normal connection state of the battery 11 is a sta...

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PUM

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Abstract

In the power supply control device of the present invention, at least one of the n second semiconductor switches (30) included in n (n: an integer greater than 2) control circuits (B1, B2, ..., Bn) is switched to conduct When turned on, the first semiconductor switch (20) is switched to conduct. Furthermore, when all the n second semiconductor switches (30) are switched off, the first semiconductor switch (20) is switched off. A cathode of a parasitic diode (Dp1) of the first semiconductor switch (20) is connected to a cathode of a parasitic diode (Dp2) of each of n second semiconductor switches (30).

Description

technical field [0001] The present invention relates to a power supply control device for controlling power supply via each of a plurality of switches. Background technique [0002] A vehicle is equipped with a power supply control device that controls power supply from a battery to a load (for example, refer to Patent Document 1). The power supply control device described in Patent Document 1 includes two N-channel FETs (Field Effect Transistors), and the drain of one FET is connected to the drain of the other FET. The source of one FET is connected to the positive terminal of the battery, and the source of the other FET is connected to one end of the load. The negative terminal of the battery is connected to the other end of the load. [0003] A parasitic diode is connected between the respective drains and sources of the two FETs. In each of the two FETs, the cathode of the parasitic diode is connected to the drain, and the anode of the parasitic diode is connected to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/687H02J7/00
CPCH02J7/00H03K17/687H03K17/302H03K17/6872H03K17/693
Inventor 杉泽佑树
Owner AUTONETWORKS TECH LTD