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Spatial field power supply suitable for Sipm(Si photomultiplier)

A light multiplication and space technology, applied in the field of power electronics, can solve the problems of chip embargo, failure to meet demand, high-voltage operational amplifiers, etc., and achieve the effect of simple circuit, avoiding self-excited oscillation, and ensuring stability

Inactive Publication Date: 2019-05-17
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] There are two common ways to realize the adjustable output power supply. One is to directly use the high-voltage operational amplifier, and use the reverse input proportional amplifier circuit to realize the output adjustable. Devices, such special devices, foreign chips are at risk of embargo
The second is to use an adjustable voltage regulator, input a variable voltage at the adjustment end, and obtain a linear output voltage at the output end, but it is usually suitable for low-voltage output. Sipm photomultiplier tubes require a high voltage of up to 150V, so this solution is also Can't meet demand

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  • Spatial field power supply suitable for Sipm(Si photomultiplier)

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Embodiment Construction

[0018] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0019] The space field power supply suitable for the Sipm light multiplier tube provided by the present invention includes a flyback power conversion topology, a rectification filter circuit, a DA chip, a PNP transistor and an NPN transistor, and a linear adjustment circuit is formed by an operational amplifier, a DA chip and a transistor. The flyback power conversion topology is used to convert the low voltage of the primary bus (usually 24V ~ 33V) into the high voltage of the output terminal of the secondary power supply, and the voltage value can reach more than 150V. The high voltage of the secondary power supply is filtered by the rectification and filtering circuit as the input of the linear adjustment circuit, and the linear adjustment circuit outputs a wide range of high voltage that can be linearly adjusted. The flyback power conversion topology i...

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Abstract

The invention provides a spatial field power supply suitable for a Sipm (Si photomultiplier). The spatial field power supply suitable for the Sipm comprises a flyback power conversion topology, a rectifying and filtering circuit, an operational amplifier, a DA chip, a PNP type triode, and an NPN type triode; the operational amplifier, the DA chip, and the triodes form a linear adjustment circuit,low voltage at an input end is converted into high voltage through the flyback power conversion topology, then the high voltage is taken as input of the linear adjusting circuit after being subjectedto filtration through the rectifying and filtering circuit, current flowing through the triodes is controlled by utilizing the DA chip and the operational amplifier, the linear amplification characteristic of the triodes is utilized at the output end, and linearly adjustable high voltage is outputted from the output end of the linear adjustment circuit. The spatial field power supply suitable forthe Sipm realizes continuously adjustable and wide-ranged high voltage output.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a space field power supply suitable for Sipm photomultiplier tubes. Background technique [0002] In order to meet the mission of orbiting Mars, the Mars Energy Particle Analyzer uses a Sipm light multiplier tube to detect Martian energy particles. Due to the complex space environment of Mars and the extremely harsh working conditions of the Sipm photomultiplier tube, the Sipm photomultiplier tube has high requirements for its power supply voltage. Usually, the power supply voltage range required by Sipm photomultiplier tubes is continuously adjustable from 0 to 150V, and the accuracy within the full output voltage range is required to be less than 0.1V, and the stability is less than 0.01%. In the field of DC-DC power supply modules for aerospace, there is currently no power supply that can meet the above requirements. [0003] There are two common ways to realize th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
Inventor 汪晓文王鷁李斌胡向宇李存惠
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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