Multi-channel differential pulse generator using metal-oxide-semiconductor (MOS) tube and method for controlling generator

Abstract

The invention discloses a multi-channel differential pulse generator using an MOS tube and a method for controlling the generator. Positive ends of controllable direct current / direct current (DC / DC) output are connected with output channels V1, V2, V3......Vn respectively through Q12, Q22, Q32......Qn2 of the MOS tube and are connected with controllable DC / DC negative ends respectively through Q11, Q21, Q31......Qn1 of the MOS tube simultaneously, n groups of half arm bridge circuits are formed by Q11 and Q12, Q21 and Q22......Qn1 and Qn2 of the MOS tube, differential output of pulse signals of any two groups of channels from V1-Vn can be achieved through combination connection of Q11-Qn1 of the MOS tube and Q12 and Qn2 of the MOS tube, and the amplitude of pulse signals can be adjusted through control of a VC end. According to the pulse generator, the output pulse period and the width can be adjusted through control of the combination connection time of Q11-Qn1 of the MOS tube and Q12 and Qn2 of the MOS tube, an output channel switching device is omitted, the cost and the power consumption are reduced, the structure is simple, and the generator is easy to integrate.

Description

technical field [0001] The invention relates to a pulse generator, in particular to a multi-channel differential pulse generator using MOS tubes and a control method thereof. Background technique [0002] In many applications, differential pulse signals with adjustable amplitude, pulse width and frequency are required. A part of the existing pulse generator is implemented by a digital-to-analog conversion chip, and the unidirectional pulse output is realized by controlling the digital-to-analog conversion chip; the other part is realized by a certain amount of digital logic chip combination, which is too complicated. In order to realize multi-channel output in the above two methods, it is necessary to add a channel switching device, and the output pulse amplitude range is limited by the power supply voltage, and the cost is high and the power consumption is large. [0003] Wu Youlin designed "Dual Channel Pulse Generator and Implantable Electrical Stimulation System" (publi...

AI Technical Summary

Problems solved by technology

Part of the existing pulse generator is realized by using a digital-to-analog conversion chip, and the one-way pulse output is realized by controlling the digital-to-analog conversion chip; the other part is realized by a certain amount of digital logic chip combination, which is too complicated

If the above two methods are to achieve multi-channel output, a channel switching device needs to be added, and the range of the output pulse amplitude is limited by the power supply voltage, and the cost is high and the power consumption is large.

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