A Reconfigurable Boost Charge Pump Without Threshold Voltage Loss

A technology of boosting charge pump and threshold voltage, applied in the field of power supply, can solve problems such as threshold voltage loss and device waste, and achieve the effects of improving conversion efficiency, increasing power density, and reducing output voltage ripple

Active Publication Date: 2020-04-14
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is how to avoid the problems of device waste and threshold voltage loss in the reconfigurable boost charge pump

Method used

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  • A Reconfigurable Boost Charge Pump Without Threshold Voltage Loss
  • A Reconfigurable Boost Charge Pump Without Threshold Voltage Loss
  • A Reconfigurable Boost Charge Pump Without Threshold Voltage Loss

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Embodiment Construction

[0048] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0049] Such as figure 2 As shown, the reconfigurable boost charge pump without threshold voltage loss includes: power stage circuit, clock boost circuit, level shifter, logic control module;

[0050] see also image 3 As shown, the power stage circuit includes n+1 NMOS transistors M1, M2, ... Mn, n floating capacitors C1, C2, ..., decoupling capacitor Cout, and n+1 NMOS transistors are cascaded, The sources of NMOS transistors M1, M2, ..., Mn are respectively connected to the upper plates of floating capacitors C1, C2, ..., Cn, the drain of NMOS transistor M1 is connected to the input power supply Vin, and the d...

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Abstract

The invention discloses a reconfigurable boost charge pump without threshold voltage loss, and relates to the technical field of power supplies. The reconfigurable boost charge pump comprises power-stage circuits, clock boost circuits, level converters and logic control modules; the output ends of the clock boost circuits are connected with the first input ends of the level converters, the outputends of the level converters are connected with the power-stage circuits, and the output ends of the logic control modules are connected with the power-stage circuits; and power switch pipe sets, floating capacitor sets and the level converters are connected with one another to form the multi-stage level converter, and thus the charge pump works under the different voltage magnifications. The reconfigurable boost charge pump has the advantages that the problem of device waste in the reconfigurable charge pump is effectively solved, the threshold voltage loss and a reverse current inside the charge pump are eliminated, thus actual no-load output of the charge is close to an ideal value, the charge pump is allowed to output the expected voltage with the few stages, and the power density andthe overall conversion efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of power supplies, and more specifically relates to a reconfigurable boost charge pump without threshold voltage loss. Background technique [0002] Compared with the low-dropout linear regulator, the switched capacitor voltage converter has the characteristics of maintaining high conversion efficiency under high voltage conversion ratio, while the switched capacitor voltage converter has a small volume compared with the DC-DC switching power supply. , the advantage of easy integration without inductive components. The above characteristics make switched capacitor voltage converters widely used in portable electronic devices, digital-analog hybrid circuits powered by single power supply, and energy harvesting systems, and have attracted more and more attention from engineers and scholars. [0003] The traditional reconfigurable boost charge pump structure such as figure 1 As shown, in order to realize the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/07
CPCH02M3/07
Inventor 程心张涵张章解光军
Owner HEFEI UNIV OF TECH
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