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P-channel MOS tube driving circuit with self-adaptive input voltage

A MOS tube, input voltage technology, used in electrical components, generating electrical pulses, pulse generation, etc.

Pending Publication Date: 2020-10-27
GUANGDONG AOPUTE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to: aim at the deficiencies in the prior art, provide a P-channel MOS tube drive circuit with an adaptive input voltage, solve the problem that the drive voltage of the P-channel MOS tube needs to follow the input voltage change, so that the drive circuit can automatically Adapt to different input voltages, broaden the range of input voltage

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Embodiment Construction

[0017] Certain terms are used, for example, in the description and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. As mentioned throughout the specification and claims, "comprising" is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0018] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", horizontal" etc. are based on the draw...

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Abstract

The invention discloses a P-channel MOS tube driving circuit with self-adaptive input voltage. The circuit comprises a first MOS tube, a triode, a first resistor, a diode, a first constant current switch module, a second constant current switch module and a trigger source. The grid electrode of the first MOS tube is connected with the emitting electrode of the triode and the first constant currentswitch module. The drain electrode of the first MOS tube is connected with a circuit output end; the source electrode of the first MOS tube is connected with the input end of the circuit and the collector electrode of the triode. The diode is arranged between the emitting electrode and the base electrode of the triode, the base electrode of the triode is connected with the negative electrode of the diode and the second constant-current switch module, one end of the first resistor is connected with the input end of the circuit, the other end of the first resistor is connected with the base electrode of the triode, and the first constant-current switch module and the second constant-current switch module are both connected with the trigger source. The circuit can adapt to different input voltages, and the range of the input voltages is widened.

Description

technical field [0001] The invention belongs to the technical field of battery production and manufacturing, and in particular relates to a P-channel MOS transistor drive circuit with an adaptive input voltage. Background technique [0002] P-channel MOS transistors are commonly used switching devices. The hole mobility of P-channel MOS transistors is low. Therefore, when the geometric size of MOS transistors and the absolute value of the operating voltage are equal, the transconductance of PMOS transistors is smaller than that of N-channel MOS transistors. transistor. In addition, the absolute value of the threshold voltage of the P-channel MOS transistor is generally high, requiring a relatively high operating voltage. The voltage and polarity of its power supply are incompatible with bipolar transistor-transistor logic circuits. Because the PMOS circuit technology is simple and the price is cheap, some medium-scale and small-scale digital control circuits still use PMOS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K3/015H03K3/014H03K3/353
CPCH03K3/014H03K3/015H03K3/353
Inventor 李志荣
Owner GUANGDONG AOPUTE TECH CO LTD