A dc/dc converter and energy harvesting system

Abstract

The invention discloses a DC / DC (direct current to direct current) converter, which is applied to an energy acquiring system; the energy acquiring system comprises a power module and a rectifier; theDC / DC converter comprises an oscillator module and a charge pump module; the oscillator module comprises a first inductor, a second inductor, a third inductor, a fourth inductor, a first capacitor, afirst controllable switch, a second controllable switch; the charge pump module outputs power supply voltage capable of making load work normally according to a clock signal provided by the oscillatormodule. The DC / DC converter is low in oscillation starting voltage and easy to integrate; the energy acquiring cost is saved to some extent. The invention further discloses an energy acquiring system, which has the beneficial effects as above.

Description

technical field [0001] The invention relates to the field of energy acquisition, in particular to a DC / DC converter and an energy acquisition system. Background technique [0002] As electronic circuits have entered the era of using microwatt energy for power supply, the corresponding energy harvesting technology has begun to receive social attention. The current energy harvesting system includes a power module, a rectifier, and a DC / DC converter. The rectifier converts the AC power output by the power module into DC power, and then outputs it to the DC / DC converter, so that the DC / DC converter can convert the rectified output of the rectifier The voltage is converted into a stable load supply voltage. Because the power modules in the energy harvesting system are generally microwave and vibration sources, the output voltage is generally low, and the output voltage after rectification by the rectifier is not enough to start the DC / DC converter. Therefore, the traditional In ...

AI Technical Summary

Problems solved by technology

[0003] However, the mechanical auxiliary switch in the DC / DC converter is difficult to integrate, which limits the application space of the DC / DC converter. At the same time, the cost of the mechanical auxiliary switch is relatively high, which increases the cost of energy acquisition to a certain extent.

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