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Charge pump device

A charge pump and circuit technology, applied to electrical components, conversion equipment without intermediate conversion to AC, automatic power control, etc., can solve the problems of small output range and inability to match the adjustment range of voltage-controlled oscillator circuits, etc.

Active Publication Date: 2022-03-11
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, if the charge pump device has a faster operating speed, the output range of the charge pump device is smaller and cannot match the adjustment range of the voltage controlled oscillator circuit

Method used

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Embodiment Construction

[0011] All terms used herein have their usual meanings. The above-mentioned words are defined in commonly used dictionaries, and the usage examples of any words discussed here included in the content of this application are only examples, and should not limit the scope and meaning of this application. Likewise, the present application is not limited to the various embodiments shown in this specification.

[0012] As used herein, "coupling" or "connection" can refer to two or more elements in direct physical or electrical contact with each other, or indirect physical or electrical contact with each other, and can also refer to two or more components. Components operate or act on each other. As used herein, the term "circuitry" may be a single system formed by at least one circuit, and the term "circuit" may be connected in a certain way by at least one transistor and / or at least one active and passive element device for processing signals.

[0013] As used herein, the term "...

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Abstract

The charge pump device comprises first to third current source circuits, a first switch and a second switch. The first current source circuit is implemented by a first type of transistor and provides a first current to an output node. The first switch is selectively turned on according to a first control signal. The second current source circuit draws a second current from the output node when the first switch is on. The second switch is selectively turned on according to a second control signal. Each of the first switch and the second switch is implemented by a second type of transistor, and the withstand voltage of the first type of transistor is higher than that of the second type of transistor. The third current source circuit draws a third current from the output node when the second switch is on.

Description

technical field [0001] The present application relates to charge pump devices, and more particularly to charge pump devices having a high output voltage range and suitable for high speed applications. Background technique [0002] The charge pump device can be used as a circuit in the control clock generation circuit, which is used to generate corresponding current according to the output signal of the detection circuit. In order to support the adjustment range of the VCO circuit, the current generated by the charge pump device needs to have a wide output range. On the other hand, in order to be applicable to high-speed clock circuits, the charge pump device needs to have a faster operation speed. However, in the prior art, the output range and the operating speed need to be traded off in design. In other words, if the charge pump device has a wider output range, the operation speed of the charge pump device is relatively slow, which is not suitable for high-speed applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/07
CPCH02M3/07H03L7/0893H03L7/093H03L7/0895H03L7/0807H03L7/08
Inventor 杨军娄佳宁
Owner REALTEK SEMICON CORP