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Device for optimizing charge pump of integrated circuit and method therefor

An optimization device, charge pump technology, applied in the direction of circuits, electrical components, electric solid devices, etc., can solve the problems of complex circuits and unfavorable practical applications, and achieve the effect of low cost

Active Publication Date: 2008-01-02
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the oscillator circuit required by these two methods needs to be specially designed, and its circuit is complicated, which is not conducive to practical application

Method used

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  • Device for optimizing charge pump of integrated circuit and method therefor
  • Device for optimizing charge pump of integrated circuit and method therefor
  • Device for optimizing charge pump of integrated circuit and method therefor

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Embodiment Construction

[0024] The technical solution of the present invention and its beneficial effects will be easily understood through the description of specific embodiments of the present invention below in conjunction with the accompanying drawings.

[0025] The optimization device of the integrated circuit charge pump of the present invention, as shown in Figure 2, is connected in the circuit before the charge pump, and it includes two high-frequency oscillator OSC1, low-frequency oscillator OSC2 with very simple circuit structure, power supply voltage detection Device VD and frequency selection switch K. The voltage detector VD detects the circuit power supply voltage VDD, and controls the frequency selection switch K according to the detection result, so that the high frequency oscillator OSC1 or the low frequency oscillator OSC2 is selected through the frequency selection switch K.

[0026] The working process of the present invention is: when the circuit power supply voltage VDD is low, ...

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PUM

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Abstract

The invention discloses an optimize device and a relative method, of integrated circuit charge pump, wherein the optimize device is arranged in a circuit before the charge pump, which comprises a high-frequency vibrator and a low-frequency vibrator, for respectively outputting clock signals at different frequencies, and a voltage checker connected with a circuit voltage to check the voltage, and connected with a frequency selecting switch for control. The frequency selecting switch can select the high-frequency vibrator and the low-frequency vibrator. The invention uses the charge pump optimize device and selects right working frequency, to approach the circuit property and power consumption to real demand in whole working voltage range, while the vibrator can avoid special design, but use annular vibrator or the like with simple circuit structure, with high practicality and low cost.

Description

technical field [0001] The invention relates to a voltage boosting circuit device and method in the field of integrated circuits, in particular to a charge pump optimization device and method thereof. Background technique [0002] In the prior art, an embedded programmable EEPROM memory applied to a portable device requires an internal charge pump circuit to generate a high level to write and erase data. The operating voltage range of this type of memory is very large, usually between 1.8V and 3.3V. [0003] The problems that need to be solved in designing a charge pump circuit with such a wide operating voltage range are shown in Figure 1. When the operating voltage is very low, the conversion efficiency of the charge pump circuit will decrease, and the driving capability will decrease; when the operating voltage increases, The power consumption of the charge pump circuit will increase several times. Therefore, the charge pump circuit that can work at low voltage must be ...

Claims

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Application Information

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IPC IPC(8): H02M3/07H01L27/00
Inventor 周莉
Owner SANECHIPS TECH CO LTD
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