A wide dynamic range self-generating device embedded system power supply circuit

Abstract

The utility model relates to a wide dynamic range self-generating device embedded system power supply circuit, which belongs to the technical field of embedded system power supply. The invention comprises a first linear voltage stabilizing circuit with low dropout at the input end, a BOOST type DC / DC conversion circuit, a second linear voltage stabilization circuit with low dropout at the output end, the first linear voltage stabilization circuit and a BOOST type DC / DC conversion circuit connected, the BOOST type DC / DC conversion circuit is connected with the second linear voltage regulator circuit, the first linear voltage regulator circuit tends to stabilize the input voltage provided by the power generator to the BOOST type DC / DC conversion circuit, and the second linear voltage regulator circuit The circuit stabilizes the voltage adjusted by the BOOST type DC / DC conversion circuit to a target value and outputs power supply. The present invention reduces its own requirements on the volume, heat dissipation, power consumption and power output capability of the self-generating device as a whole, thereby realizing the power supply design of the embedded system of the self-generating device with a wide dynamic range.

Description

technical field [0001] The invention belongs to the technical field of power supply of embedded systems, in particular to a power supply circuit of an embedded system of a self-generating device with a wide dynamic range. Background technique [0002] There are many occasions where embedded systems need to be used for monitoring, such as long-running mechanical devices, high-voltage power transmission devices, but it is difficult to power embedded systems for a number of reasons. For mechanical devices that operate for a long time, the early slip ring power supply has the problem of mechanical life, and the battery has the problem of regular shutdown and replacement; for high-voltage power transmission devices, the insulation problem makes it impossible to use a small transformer to step down the power supply, and the battery power supply also has the problem of regular shutdown and replacement. . The best solution is to use the self-generation mode to solve the power suppl...

AI Technical Summary

Problems solved by technology

In fact, it is difficult to obtain a conventional PNP bipolar transistor with a VCEO of 900V. Only high-power power transistors in some power electronics fields can achieve this withstand voltage; at the same time, the insulation problem under high voltage also needs to be solved. The adjustment tube under the difference will also bear considerable heat dissipation power

However, for the embedded monitoring system on the equipment, there are relatively strict requirements on volume, heat dissipation, power consumption and power output of the self-generating device, which makes it difficult to realize the embedded power supply of the self-generating device with a wide dynamic range

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