SWITCH CONTROL CIRCUIT, IGNITER, ENGINE IGNITION DEVICE, AND VEHICLE

• Main Authors: TANIGAWA HIROYUKI, OBE YUYA
• Format: Patent
• Language: English; Japanese
• Published: 18.12.2014
• Subjects: BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES; LIGHTING; MECHANICAL ENGINEERING; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To provide a switch control circuit with a software cutoff function which is easily integrated.SOLUTION: A switch control circuit 11 has: an output part 112 for generating an on/off signal Sg of a switch element 12; a software cutoff part 116 which includes a variable resistance RV forming a resistive voltage dividing circuit together with a resistor element RH of the output part 112 and, by switching resistance values of the variable resistance RV stepwise when the switch element 12 is forcibly turned off, gradually shifts the signal level of the on/off signal Sg determined by the resistive voltage dividing circuit; and a control unit 111 for controlling the output part 112 and the software cutoff part 116. 【課題】集積化が容易なソフト遮断機能付きの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１１は、スイッチ素子１２のオン／オフ信号Ｓｇを生成する出力部１１２と；出力部１１２の抵抗要素ＲＨと共に抵抗分圧回路を形成する可変抵抗ＲＶを含み、スイッチ素子１２の強制オフ時に可変抵抗ＲＶの抵抗値を段階的に切り替えることにより、抵抗分圧回路で定まるオン／オフ信号Ｓｇの信号レベルを緩やかに遷移させるソフト遮断部１１６と；出力部１１２及びソフト遮断部１１６を制御する制御部１１１と；を有する。【選択図】図２