PROBLEM TO BE SOLVED: To quickly and accurately perform correction control for suppressing a variation of an auxiliary machine load voltage resulting from a variation of an auxiliary machine battery voltage.SOLUTION: A battery voltage Vbat which is outputted from an auxiliary machine battery is applied on a positive terminal of an auxiliary machine load 12, and an inter-drain/source voltage of a transistor Q3 is applied on a negative terminal of the auxiliary machine load 12. A regulator RG1 controls the inter-drain/source voltage of the transistor Q3 on the basis of a terminal voltage of a resistor R3 arranged at a first resistor circuit 14 and a terminal voltage of a resistor R6 arranged at a second resistor circuit 20. When assuming that a Vdd-side terminal of a resistor R1 and a Vcc-side terminal of a resistor R4 are connected to the earth, a ratio of the synthesized resistance of the resistors R1 and R3 with respect to the synthesized resistance of the resistors R1 to R3 coincides with a ratio of the synthesized resistance of the resistors R4 and R6 with respect to a ratio of the synthesized resistance of the resistors R4 to R6.SELECTED DRAWING: Figure 1
【課題】補機バッテリ電圧の変動に起因する補機負荷電圧の変動を抑制するための補正制御を高速かつ高精度で実行すること。【解決手段】補機負荷12のプラス端子には、補機バッテリから出力されたバッテリ電圧Vbatが印加され、補機負荷12のマイナス端子には、トランジスタQ3のドレイン・ソース間電圧が印加される。レギュレータRG1は、第1抵抗回路14に設けられた抵抗R3の端子電圧と第2抵抗回路20に設けられた抵抗R6の端子電圧とに基づいて、トランジスタQ3のドレイン・ソース間電圧を制御する。抵抗R1のVdd側端子および抵抗R4のVcc側端子がアースに接続されていると仮定したとき、抵抗R1〜R3の合成抵抗に対する抵抗R1およびR3の合成抵抗の比率は、抵抗R4〜R6の合成抵抗に対する抵抗R4およびR6の合成抵抗の比率と一致する。【選択図】図1
AUXILIARY MACHINE LOAD VOLTAGE CONTROL CIRCUIT OF VEHICLE
車両の補機負荷電圧制御回路
2017-02-09
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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