SWITCH CONTROL CIRCUIT, VOLTAGE OUTPUT DEVICE, AND VEHICLE

• Main Author: SUMITOMO HIRONORI
• Format: Patent
• Language: English; Japanese
• Published: 29.06.2023
• 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; BASIC ELECTRONIC CIRCUITRY; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PULSE TECHNIQUE

To provide a switch control circuit with which it is possible to shorten a dead time.SOLUTION: A switch control circuit (3) controls a first switch (1) which is constituted so that a first voltage is applied to a first terminal, and a second switch (2) which is constituted so that a second voltage lower than the first voltage is applied to a second terminal, while the first terminal is connected to the second terminal of the first switch. The switch control circuit comprises: a first sample-and-hold circuit (35) for sampling and holding a switch voltage occurring in a connection node of the first and second switches when the second switch turns off; a first comparison circuit (36) for comparing the switch voltage sampled and held by the first sample-and-hold circuit with a first fixed voltage; and first dead time adjustment units (31, 36, 37) for adjusting a dead time at the time the switch voltage goes high, in accordance with the output of the first comparison circuit.SELECTED DRAWING: Figure 1 【課題】デッドタイムの短縮を図ることができるスイッチ制御回路を提供する。【解決手段】スイッチ制御回路（３）は、第１端に第１電圧が印加されるように構成される第１スイッチ（１）と、第１端が前記第１スイッチの第２端に接続され第２端に前記第１電圧よりも低い第２電圧が印加されるように構成される第２スイッチ（２）と、を制御する。前記スイッチ制御回路は、前記第１スイッチと前記第２スイッチとの接続ノードに発生するスイッチ電圧を前記第２スイッチがターンオフするときにサンプルホールドする第１サンプルホールド回路（３５）と、前記第１サンプルホールド回路によってサンプルホールドされた前記スイッチ電圧と、第１定電圧とを比較する第１比較回路（３６）と、前記第１比較回路の出力に応じて前記スイッチ電圧の立ち上がり時のデッドタイムを調整する第１デッドタイム調整部（３１、３６、３７）と、を備える。【選択図】図１