FUSE MELTING CIRCUIT AND ELECTRONIC APPARATUS

PROBLEM TO BE SOLVED: To improve certainty of an operation for melting a fuse.SOLUTION: A fuse melting circuit 100 for melting a fuse 200 of which one end is connected to a power source comprises: a transistor 10 which is connected to the other end of the fuse 200 and changes a magnitude of a fuse c...

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Bibliographic Details
Main Authors MATSUKI HIROHISA, OGAWA TOSHITAKA, KUWANA YUJI
Format Patent
LanguageEnglish
Japanese
Published 28.12.2016
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:PROBLEM TO BE SOLVED: To improve certainty of an operation for melting a fuse.SOLUTION: A fuse melting circuit 100 for melting a fuse 200 of which one end is connected to a power source comprises: a transistor 10 which is connected to the other end of the fuse 200 and changes a magnitude of a fuse current flowing through the fuse; a control voltage generation part 20 which generates a control voltage corresponding to the magnitude of the fuse current; and an amplification part 30 that generates a conduction control signal for controlling a conduction state of the transistor 10 based on a voltage of a melting control signal for controlling whether to melt the fuse 200 and the control voltage that is generated by the control voltage generation part 20.SELECTED DRAWING: Figure 3 【課題】ヒューズを溶断させる動作の確実性を向上させる。【解決手段】一端が電源に接続されたヒューズ２００を溶断させるためのヒューズ溶断回路１００は、ヒューズ２００の他端に接続され、ヒューズを流れるヒューズ電流の大きさを変化させるトランジスタ１０と、ヒューズ電流の大きさに応じた制御電圧を発生する制御電圧発生部２０と、ヒューズ２００を溶断するか否かを制御するための溶断制御信号の電圧と、制御電圧発生部２０が発生する制御電圧とに基づいて、トランジスタ１０の導通状態を制御する導通制御信号を生成する増幅部３０と、を有する。【選択図】図３
Bibliography:Application Number: JP20150111119