High voltage circuit of semiconductor sensor

Abstract

The invention provides a high voltage circuit of a semiconductor sensor. The high voltage circuit of a semiconductor sensor includes a direct current pulse PMW module, a bootstrap high voltage circuit, a voltage doubling circuit, and a resistive subdivision feedback circuit, wherein the direct current pulse PMW module adjusts the magnitude of the voltage amplitude and the duty cycle of an input power source, generates a closed loop controlled direct current pulse PMW signal, and outputs the direct current pulse PMW signal to the bootstrap high voltage circuit; the bootstrap high voltage circuit modulates the direct current pulse PMW signal into a bootstrap high voltage signal and outputs the bootstrap high voltage signal to the voltage doubling circuit; the voltage doubling circuit is usedfor amplifying the bootstrap high voltage signal by multiple times to form a high voltage signal, and one branch of the high voltage signal is directly outputted, and the other branch of the high voltage signal is input into the resistive subdivision feedback circuit; and the resistive subdivision feedback circuit performs resistive subdivision on the high voltage signal and outputs the feedbackvoltage to the direct current pulse PMW module. A single lithium battery can be used for supplying power for the high voltage circuit of a semiconductor sensor. The high voltage circuit of a semiconductor sensor is low in power consumption which is less than 5 mW. The output current of the high voltage circuit of a semiconductor sensor can reach 1 mu A, thus satisfying the high voltage demand fora large area multi-pixel Si semiconductor sensor.

Description

Technical field [0001] The invention belongs to the technical field of semiconductor detectors, and specifically relates to a high-voltage circuit of a semiconductor sensor. Background technique [0002] Space exploration and space experiment missions such as manned space stations and manned moon landings require an integrated design of a miniaturized, low-power space particle radiation monitoring spectrometer and space suit that can be automatically read out. The semiconductor sensor used in the radiation monitoring spectrometer needs to work in a fully depleted state formed by the reverse bias high voltage. At present, the high voltage circuit of the semiconductor sensor is generally composed of a DC oscillating circuit, a high voltage coil, an output rectifier filter circuit and a high voltage feedback network, which is large and static. Problems such as high power consumption cannot meet the application requirements of miniaturized, low-power card-type nuclear radiation monit...

AI Technical Summary

Problems solved by technology

The semiconductor sensor used in the radiation monitoring spectrometer needs to work in the fully depleted state formed by the reverse bias high voltage. At present, the high voltage circuit of the semiconductor sensor is generally composed of a DC oscillating circuit, a high voltage coil, an output rectification filter circuit and a high voltage feedback network. Problems such as high power consumption cannot meet the application requirements of miniaturized, low-power card-type nuclear radiation monitoring spectrometers

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