Small inductance boost type DC converter

Abstract

This invention relates to a small sized inductance booster DC converter. Multiple vibrators generate square-wave signals with adjustable frequency and duty-ratio to drive the conduction and end of a switch triode, the inductor current serial to the triode collector loop varies along with the conduction and end of the triode, an instant high voltage is generated at one end of the inductor when it is connected to the end jump, stable high voltage and small current output are got by rectification and filter according to self inductance effect.

Description

technical field [0001] The invention relates to a DC converter, in particular to a small inductance step-up DC converter with high voltage and low current output, which is suitable for photoelectric conversion devices, sensor bias circuits and avalanche photodiode detectors in small portable products. Background technique [0002] With the development of microelectronics technology, electronic equipment is improving towards integration, portability and digitalization, which requires the modules in the system to be more and more miniaturized and low power consumption. Therefore, in addition to stability, reliability, and high efficiency, miniaturization and light weight are also very urgent needs among the technical requirements put forward by the electronic system for the power supply device. [0003] At present, many electronic systems are directly powered by batteries or only by a basic voltage, but many detectors, sensors and modules require a bias voltage much higher tha...

AI Technical Summary

Problems solved by technology

Switching converters are favored by people because of their high stability, high efficiency, flexible positive and negative polarity, and step-up and step-down methods. However, their circuits are relatively complicated. When used as a boost converter, the energy storage element or Transformers and complex circuits will still limit miniaturization

Another is to integrate the power switch, synchronous flow controller and control circuit, and externally connect the energy storage inductor and input / output filter capacitor, thereby greatly reducing the volume and weight. However, the output voltage of this type of product is currently Still can't meet the requirements

[0006] In a word, the step-up DC / DC conversion method in the prior art uses components such as a step-up transformer, a voltage doubler capacitor, an energy storage capacitor, and an inductor, and the weight and volume of the transformer are relatively large.

However, the method of integrating the control circuit often cannot provide a higher output voltage.

Images