Short-circuit MOS voltage regulator system used for motorcycle

Abstract

The invention discloses a short-circuit MOS voltage regulator system used for a motorcycle. The system comprises a first phase zero cross detection circuit, a second phase zero cross detection circuit and a third phase zero cross detection circuit, wherein a first phase signal input end PH1 of the first phase zero cross detection circuit is connected to an output end of a first phase voltage signal of a magnetor via a resistor R1; a second phase signal input end PH2 of the second phase zero cross detection circuit is connected to a second phase voltage signal output end of the magnetor via a resistor R2; and a third phase signal input end PH3 of the third phase zero cross detection circuit is connected to a third phase voltage signal output end of the magnetor via a resistor R3. The system disclosed by the invention is characterized in that whether the magnetor is under a working state or a halt state is detected in a dynamic mode, so that a power supply access of a power source can be controlled.

Description

technical field [0001] The invention relates to a short-circuit MOS voltage regulator system for motorcycles. Background technique [0002] At present, the voltage regulators used on motorcycles mainly include thyristor voltage regulators and MOS voltage regulators. The large conduction voltage drop of the SCR is large. In a voltage regulator with large power, it will cause the voltage regulator to bear a serious heat load. If the heat dissipation capacity of the voltage regulator itself is not good, the internal temperature of the device will If it is too fast or too high, the reliability of the product cannot be guaranteed; please refer to the application number: 201210184747.8, and the name of the invention: a patent application for an ASIC for a motorcycle voltage regulator. [0003] The on-resistance of the MOS tube can be as low as several milliohms, which can greatly reduce the power consumption of the voltage regulator itself, so the MOS voltage regulator has attrac...

AI Technical Summary

Problems solved by technology

At present, the MOS voltage regulators on the market are mainly designed with separate circuits, and there are defects such as very complicated circuit structure, many devices required, large PCB area for mounting devices, difficult production process, and high cost; The reference application number is: 201310221740.3, and the name of the invention is: patent application for motorcycle MOS voltage regulator ASIC

[0004] In addition, most of the existing short-circuit voltage regulators use single-wave control. When the load is connected, the MOS tube of a certain phase will continue to conduct, and the corresponding Schottky has no current flow, and only the off-state MOS corresponds to There is current flowing in the Schottky, and the heat generation of each power device is unbalanced, which affects the service life of the voltage regulator system

The motorcycle magneto adopts a multi-pole structure, and the electrical performance parameters of each phase are not completely consistent. There is a phenomenon that the phase voltage is not zero when the current crosses zero. The single-wave control method may aggravate the heat concentration and affect system reliability

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