VOLTAGE CONVERSION APPARATUS

To provide a voltage conversion apparatus capable of preventing a load from having a breakdown when wiring that connects a voltage conversion unit and a voltage dividing circuit is disconnected.SOLUTION: In a voltage conversion apparatus 1, a voltage conversion unit 11 converts an input voltage Vi t...

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Bibliographic Details
Main Authors KOMIYA MOTOKI, KUME MASAYOSHI
Format Patent
LanguageEnglish
Japanese
Published 02.07.2020
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Summary:To provide a voltage conversion apparatus capable of preventing a load from having a breakdown when wiring that connects a voltage conversion unit and a voltage dividing circuit is disconnected.SOLUTION: In a voltage conversion apparatus 1, a voltage conversion unit 11 converts an input voltage Vi to an output voltage Vo. An output voltage decreasing unit 12 decreases the output voltage Vo to generate a decreased output voltage Vk. An output voltage dividing unit 13 divides the decreased output voltage Vk to generate a feedback voltage Vfb. A conversion control unit 15 compares the feedback voltage Vfb with a reference voltage Vr1 generated by a reference voltage source 14, and controls the voltage conversion unit 11 on the basis of the comparison result. When the voltage decrease does not occur at the output voltage decreasing unit 12, a feedback voltage control unit 16 controls the feedback voltage Vfb in such a way that the feedback voltage Vfb becomes a larger voltage than the reference voltage Vr1.SELECTED DRAWING: Figure 1 【課題】電圧変換部と分圧回路とを接続する配線が断線した場合に、負荷の破壊を防ぐことができる電圧変換装置を提供することを課題とする。【解決手段】電圧変換装置1において、電圧変換部11は、入力電圧Viを出力電圧Voに変換する。出力電圧降下部12は、出力電圧Voを降下させて降下出力電圧Vkを生成する。出力電圧分圧部13は、降下出力電圧Vkを分圧して帰還電圧Vfbを生成する。変換制御部15は、帰還電圧Vfbを基準電圧源14により生成された基準電圧Vr1と比較し、その比較結果に基づいて電圧変換部11を制御する。電圧降下が出力電圧降下部12において発生しない場合、帰還電圧制御部16は、帰還電圧Vfbが基準電圧Vr1よりも大きい電圧となるように帰還電圧Vfbを制御する。【選択図】図1
Bibliography:Application Number: JP20180240707