Charge pump system and memory

A charge pump and current technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problems of low charging efficiency and transmission efficiency, and achieve the effect of improving charging efficiency, improving transmission efficiency and reducing current load.

Inactive Publication Date: 2011-12-14
SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The problem solved by the invention is the problem of low charging efficiency and transmission efficiency in the existing charge pump system

Method used

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  • Charge pump system and memory
  • Charge pump system and memory
  • Charge pump system and memory

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Embodiment Construction

[0023] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways than those described here, so the present invention is not limited by the specific embodiments disclosed below.

[0025] As mentioned in the background technology section, in the prior art charge pump system used for memory, the same clock drive device controlled by the same power supply voltage is used to generate the charging clock signal and the transmission clock signal, which will cause charging efficiency and / or or decrease in transmission efficiency.

[0026] In view of the above problems, the present invention provides a charge pump system. ...

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Abstract

A charge pump system and memory, the charge pump system comprising: a charge pump unit; a clock drive device connected to the charge pump unit, the clock drive device has: a first clock drive unit controlled by a first power supply voltage , enhance the obtained current of the first type clock signal and output it to the charge pump unit; the second clock driving unit controlled by the second power supply voltage enhances the obtained current of the second type clock signal and output it to the said charge pump unit A charge pump unit; a power supply voltage stabilizing unit, configured to adjust the second power supply voltage to obtain the first power supply voltage. Compared with the prior art, the present invention improves charging efficiency and transmission efficiency by setting the first clock driving unit and the second clock driving unit separately and providing different power supply voltages respectively.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a charge pump system and a memory. Background technique [0002] In the information age, information storage is one of the most important technical contents in information technology. Memorizers such as DRAM, EEPROM, and flash memory are more and more widely used. [0003] Based on the requirements of low power consumption and low cost, the power supply voltage VDD of the memory is usually relatively low, such as 2.5V, 1.8V, etc. However, in order to realize the "writing" and "erasing" of information, it usually needs to be much higher than the power supply voltage VDD Program voltage and erase voltage, such as 8V, 11V, etc. Therefore, the charge pump system is widely used in memory for obtaining higher programming voltage and erasing voltage through lower power supply voltage VDD. [0004] refer to figure 1 , shows a schematic diagram of a charge pump circuit, the cha...

Claims

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Application Information

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IPC IPC(8): H02M3/07
Inventor 杨光军
Owner SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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