SWITCH CONTROL DEVICE, SWITCHING POWER SUPPLY DEVICE, IN-VEHICLE DEVICE, AND VEHICLE

• Main Author: YAMAGUCHI YUHEI
• Format: Patent
• Language: English; Japanese
• Published: 11.01.2024
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To provide a switch control device capable of quickly performing overcurrent protection.SOLUTION: A switch control device (2A) is configured to control: turning on/off of a first switch (SW1) in which a first end is configured to be connectable to an application end of input voltage, and a second end is configured to be connectable to a first end of an inductor (L1); and turning on/off of a second switch (SW2) in which a first end is configured to be connectable to the first end of the inductor and the second end of the first switch, and a second end is configured to be connectable to an application end of low voltage lower than the input voltage. The switch control device comprises a limiting unit (21) which is configured to limit time during which the first switch is in an on state in each switching cycle to be equal to or less than a threshold.SELECTED DRAWING: Figure 1 【課題】過電流保護を素早く行うことができるスイッチ制御装置を提供する。【解決手段】スイッチ制御装置（２Ａ）は、第１端が入力電圧の印加端に接続可能に構成され、第２端がインダクタ（Ｌ１）の第１端に接続可能に構成された第１スイッチ（ＳＷ１）のオン／オフと、第１端が前記インダクタの第１端及び前記第１スイッチの第２端に接続可能に構成され、第２端が前記入力電圧よりも低い低電圧の印加端に接続可能に構成された第２スイッチ（ＳＷ２）のオン／オフと、を制御するように構成される。前記スイッチ制御装置は、各スイッチング周期において前記第１スイッチがオンである時間を閾値以下に制限するように構成された制限部（２１）を有する。【選択図】図１