Special integrated circuit for uniphase voltage regulator of motorcycle

Abstract

The invention discloses a special integrated circuit for a uniphase voltage regulator of a motorcycle. The special integrated circuit comprises a power supply input terminal providing a power supply, a power supply output terminal for supplying power for peripheral circuits, a grounding terminal, a first signal input terminal, a secondary signal input terminal, a regulation voltage detection terminal, a first output terminal and a second output terminal, as well as a circuit integrating the following circuits: a first zero crossing detection circuit, a second zero crossing detection circuit, a first passage logic circuit, a second passage logic circuit, a regulation voltage detection circuit, a power supply, a first clamping circuit, a second clamping circuit and a power supply detection circuit. The special integrated circuit is characterized in that the first clamping circuit receives a voltage signal output by a first phase of a motorcycle magneto, and the voltage signal is output to the first zero crossing detection circuit and the first passage logic circuit after being clamped. The special integrated circuit provided by the invention has the advantages of simple process, low cost, high reliability and strong anti-interference ability and can be widely applied to various uniphase voltage regulators.

Description

technical field [0001] The invention relates to an integrated circuit, in particular to an application-specific integrated circuit for a motorcycle single-phase voltage regulator. Background technique [0002] Motorcycles are an important means of transportation in modern times. The existing motorcycle voltage regulators mainly include thyristor short-circuit voltage regulators and thyristor open-circuit voltage regulators. [0003] The thyristor short-circuit voltage regulator is a parallel voltage regulation method, which uses the control of the conduction of the thyristor for voltage regulation, that is, when the output voltage is greater than the voltage regulation voltage, the control of the conduction of the thyristor for voltage regulation; this type of voltage regulator The circuit is simple, but there are also the following disadvantages: the thermal load of the voltage regulator is large. When the output power of the magneto is large, the heat dissipation area of ​...

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Problems solved by technology

[0003] The thyristor short-circuit voltage regulator is a parallel voltage regulation method, which uses the control of the conduction of the thyristor for voltage regulation, that is, when the output voltage is greater than the voltage regulation voltage, the control of the conduction of the thyristor for voltage regulation; this type of voltage regulator The circuit is simple, but there are also the following disadvantages: the thermal load of the voltage regulator is large. When the output power of the magneto is large, the heat dissipation area of ​​the voltage regulator must be increased to ensure that the voltage regulator will not be damaged due to excessive temperature, resulting in a large volume. High cost, not suitable for high-power voltage regulation; the voltage gain of the voltage regulation circuit is small, and the voltage difference between the voltage regulator at light load and heavy load is large; the electromagnetic interference of the system is large, and when there is an inductive load, it will cause the output voltage unstable

[0004] The thyristor open-circuit voltage regulator is a series voltage regulation method, and the thyristor is controlled to be turned off for voltage regulation, that is, when the output voltage is greater than the voltage regulation voltage, the thyristor is controlled to be turned off for voltage regulation; the thyristor open circuit Although the voltage regulator solves the thermal load problem of the voltage regulator when the load at the output end is small, it also has the following serious shortcomings: when the output of the voltage regulator is heavy, it will cause more serious thermal load problems, so this voltage regulation method is only suitable for Low-power voltage regulator; when the engine is at high speed, affected by the dV / dt parameter of the thyristor, the thyristor will be turned on for a long time, resulting in a loss of control of the voltage regulator; the conduction of the thyristor at high voltage will cause the thyristor to instantly The surge current is too large, which will damage the thyristor and the rectifier diode; the conduction of the thyristor under high voltage causes the current of the voltage regulating system to change greatly, which greatly increases the electromagnetic interference of the system; when there is no storage battery, the capacitor at the output end of the voltage regulator The charging and discharging depth is very large, the temperature is too high, and it is easy to damage

However, because the circuit of the MOSFET voltage regulator is very complicated, the cost is high, and the process is difficult, this technology has not been used on a large scale in the voltage regulator.

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