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A High Efficiency Dual Capacitor Charge Pump

A dual-capacitor, charge pump technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problems of low pump power and large output voltage ripple, achieve strong output current capability, improved performance, and prevent overshoot Effect

Active Publication Date: 2019-07-19
普诚创智(成都)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the power of the traditional voltage doubler charge pump is low, and the ripple amplitude of the output voltage is relatively large

Method used

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  • A High Efficiency Dual Capacitor Charge Pump
  • A High Efficiency Dual Capacitor Charge Pump
  • A High Efficiency Dual Capacitor Charge Pump

Examples

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Embodiment Construction

[0017] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0018] Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0019] Such as figure 2 , a high-efficiency dual-capacitor charge pump of the present invention includes a low-dropout linear voltage regulator circuit, an analog switch and its control signal, a current mirror and a capacitor; the control signal of the analog switch includes S1, S2, S3, S4, S5, S6 , S7 and S8; the analog switch includes MP1 controlled by S2, MP2 controlled by S6, MP6 controlled by S1, MP5 controlled by S5, MP3 controlled by S3, MP4 controlled by ...

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Abstract

The invention discloses a high-efficiency dual-capacitor charge pump. The high-efficiency dual-capacitor charge pump is characterized by comprising a low-dropout linear voltage stabilization circuit, an analogue switch, a control signal of the analogue switch, a current mirror and capacitors, wherein the control signal of the analogue switch comprises S1, S2, S3, S4, S5, S6, S7 and S8, the analogue switch comprises an MP1 controlled by the S2, an MP2 controlled by the S6, an MP6 controlled by the S1, an MP5 controlled by the S5, an MP3 controlled by the S3, an MP4 controlled by the S7, an MN1 controlled by the S4 and an MN2 controlled by the S8, and the capacitors comprise a C1 and a C2. The high-efficiency dual-capacitor charge pump has high output current capability; the charge pump employs a mode that dual capacitors alternatively work, the output current capability is improved, and the output current ripple is reduced; and the performance of a power amplifier employing the charge pump can be greatly improved.

Description

technical field [0001] The invention relates to a switching power supply, in particular to a high-efficiency double-capacitor charge pump. Background technique [0002] A charge pump circuit is a circuit that generates a higher than power supply voltage or a negative voltage through the charge accumulation effect on a capacitor. A charge pump works by storing energy and then releasing it in a controlled manner to obtain the desired output voltage. Charge pumps use capacitors to store energy and boost voltage through switch arrays, oscillators, etc. Charge pumps are ideal for small, portable voltage products such as cell phones, notebook computers, medical instruments, and more. The most commonly used charge pump structure is the doubler charge pump, which uses a single pump capacitor for charging. [0003] The traditional voltage doubler charge pump consists of an oscillator, multiple analog switches (or an array of analog switches), a control circuit, an external pump ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/07
CPCH02M3/07
Inventor 邓扬扬沈飏杨建宇
Owner 普诚创智(成都)科技有限公司
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