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Charge pump and starting method thereof

A technology of charge pump and capacitor, which is applied in the direction of electrical components, conversion equipment without intermediate conversion to AC, output power conversion device, etc., can solve the problems of reducing voltage, power consumption, and reducing the charging efficiency of the charge pump, so as to reduce the voltage Loss, improve boost efficiency, speed up the effect of starting speed

Active Publication Date: 2018-11-02
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conduction voltage Von of the diode is relatively large, which will greatly reduce the output voltage Vref_out, consume power, and reduce the charging efficiency of the charge pump.

Method used

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  • Charge pump and starting method thereof
  • Charge pump and starting method thereof
  • Charge pump and starting method thereof

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] see figure 1 , a schematic structural diagram of an embodiment of the charge pump provided by the present invention, including:

[0036] The MOS tube booster circuit 1 is used to convert the input RF voltage into a high DC voltage output by turning on or off the MOS tube;

[0037] The inverter circuit 2 is used to output high and low levels to the MOS tube booster circuit to control the conduction or cut-off of the MOS tube;

[0038] The charging circuit 3...

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Abstract

The invention discloses a charge pump, comprising: a MOS transistor boosting circuit, used for converting the input radio frequency voltage into a high direct current voltage for output by turning onor off the MOS transistor; an inverter circuit, used for outputting high and low levels to the MOS transistor boosting circuit so as to control the turn-on or turn-off of the MOS transistor; and a charging circuit, used for supplying a stable direct current power to the inverter circuit. Correspondingly, the invention also discloses a starting method of the charge pump. The embodiment of the invention is capable of improving the boosting efficiency of the charge pump, and increasing the starting speed.

Description

technical field [0001] The invention relates to the technical field of charge pumps, in particular to a charge pump and a starting method thereof. Background technique [0002] Passive RFID tags use a charge pump to convert the radio frequency voltage into a DC voltage, and raise it to the voltage level required for the normal operation of the tag chip. When the RFID chip works long-distance, the input power is very low. On the one hand, it is necessary to adopt various design methods to reduce the power consumption of the analog front end and digital baseband of the chip; on the other hand, it is necessary to optimize the energy conversion circuit of the chip to obtain as much energy as possible. The charge pump is the only source for the chip to obtain working energy, and its efficiency directly affects key performance indicators such as the amount of energy that the subsequent circuit can obtain and the recognition distance of the chip. [0003] The charge pump in the pr...

Claims

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Application Information

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IPC IPC(8): H02M3/07H02M1/36
CPCH02M1/36H02M3/07
Inventor 莫冰高城刘才陈樟荣杨锋戴闽华
Owner 莫冰