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Voltage doubler circuit

A voltage doubling and voltage technology, applied in circuits, electrical solid devices, electrical components, etc., can solve the problem of occupying space and achieve the effect of reducing the area

Inactive Publication Date: 2005-10-05
ENTROPIC COMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Such an integrated charge pump has the following disadvantages: it requires a large area, since the internally integrated m-1 capacitors occupy most of the space in many technologies

Method used

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Examples

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Embodiment Construction

[0019] figure 1 An embodiment of a voltage processing unit according to the invention is described for amplifying an available voltage by a desired factor.

[0020] figure 1 The voltage processing unit includes an internal integrated charge pump 11 and a voltage multiplier circuit 12 .

[0021] Internal charge pump 11 may comprise, for example, a Dickson charge pump. It has a multiplicative factor X m and an adjustable output. multiplication factor X m May be adjustable to about half the desired overall amplification factor of the voltage processing unit. The voltage output of the internal charge pump is connected to a load 13, for example to a display of a device. The internal charge pump 11 further comprises a signal output terminal at which the pump signal used within the internal charge pump is supplied to the outside.

[0022] The voltage doubling circuit 12 includes an external capacitor C and an external charge pump 14 having a voltage source 15 providing a volta...

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PUM

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Abstract

The invention relates to a voltage processing unit comprising an integrated charge pump 11 for multiplying a predetermined factor Xm by a voltage Vx applied to the input of the integrated charge pump 11 . In order to be able to multiply the available voltage by the desired factor and reduce the space required for the integrated charge pump, it is suggested that the voltage processing unit also includes an external voltage multiplier circuit 12 for amplifying the available voltage Vdd and amplifying the The voltage Vx of the integrated charge pump 11 is applied to said input terminal. The invention also relates to a corresponding method.

Description

technical field [0001] The invention relates to a voltage processing unit comprising an integrated charge pump which multiplies a voltage applied to an input of the integrated charge pump by a predetermined factor. [0002] The invention also relates to a method of providing an amplified voltage. Background technique [0003] Integrated charge pumps that multiply the available voltage by a predetermined factor are known in the art, such as Dickson charge pumps. J.Shin et al. in "A New Charge Pump Without Degradation in Threshold Voltage Due to Body Effect (A New Charge Pump Without Degradation in Threshold Voltage Due to Body Effect)" (IEEE Journal Solid Circuits, Vol. 35, pp. 1227-1230, An improved fully integrated Dickson charge pump has been described in Aug. 2000). The charge pump proposed in this document comprises m-1 stages with m-1 capacitors and multiplies the input voltage Vdd by the factor m. [0004] Such an integrated charge pump has the disadvantage that it ...

Claims

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Application Information

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IPC IPC(8): H01L27/04H01L21/822H02M3/06H02M3/07H02M3/18H02M7/25
CPCH02M3/07
Inventor F·里德尔C·R·施佩尔斯
Owner ENTROPIC COMM INC