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Charge pump voltage stabilizing circuit, voltage stabilizing method and nonvolatile memory

A voltage regulator circuit, charge pump technology, applied in electrical components, conversion equipment without intermediate conversion to AC, output power conversion devices, etc., can solve problems such as ripple

Active Publication Date: 2020-11-13
GIGADEVICE SEMICON (BEIJING) INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The delay time on the loop of the charge pump system causes a certain ripple in the output voltage VOUT, and the delay time determines the ripple size of the output voltage. Therefore, it is not suitable for applications that require high voltage accuracy.

Method used

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  • Charge pump voltage stabilizing circuit, voltage stabilizing method and nonvolatile memory
  • Charge pump voltage stabilizing circuit, voltage stabilizing method and nonvolatile memory
  • Charge pump voltage stabilizing circuit, voltage stabilizing method and nonvolatile memory

Examples

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Embodiment 1

[0022] figure 2 It is a schematic structural diagram of the charge pump voltage stabilizing circuit in Embodiment 1 of the present invention. This embodiment is applicable to the case of stabilizing the load voltage, and the charge pump voltage stabilizing circuit is usually configured in a non-volatile memory.

[0023] like figure 2 As shown, the charge pump voltage stabilizing circuit provided in the embodiment of the present invention mainly includes the following parts: a charge pump module 210 and a transistor module 220 .

[0024] Specifically, the charge pump module 210 is connected to the transistor module 220, and is used to generate an output voltage according to the collected feedback voltage and output it to the transistor module 220; The energy element provides the load voltage and outputs the load voltage to the load.

[0025] First of all, it needs to be explained that non-volatile memory (nor Flash / nand Flash) is a very common memory chip, which has the adv...

Embodiment 2

[0052] Image 6 It is a flow chart of the charge pump voltage stabilization method in Embodiment 2 of the present invention. This embodiment is applicable to the situation of stabilizing the output voltage of the charge pump circuit. The charge pump voltage stabilization method is provided by the charge pump voltage stabilization circuit provided in the above embodiment. execution, usually configured in non-volatile memory.

[0053] like Image 6 As shown, the charge pump voltage stabilization method provided in the embodiment of the present invention mainly includes the following steps:

[0054] S610. The charge pump module generates an output voltage according to the collected feedback voltage and outputs it to the transistor module;

[0055] S620. If the output voltage of the transistor module is greater than a set voltage, provide a load voltage through an energy storage element, and output the load voltage to a load.

[0056] The charge pump voltage stabilizing method pr...

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Abstract

The invention discloses a charge pump voltage stabilizing circuit, a voltage stabilizing method and a nonvolatile memory. The charge pump voltage stabilizing circuit comprises a charge pump module which is connected with a transistor module and is used for generating an output voltage according to a collected feedback voltage and outputting the output voltage to the transistor module; and the transistor module which is used for providing a load voltage through the energy storage element and outputting the load voltage to a load if the output voltage is greater than the set voltage. In the embodiment of the invention, if the output voltage is greater than the preset voltage, the load voltage is provided by the energy storage capacitor and output to the load, so that the load voltage is notinfluenced by fluctuation of the output voltage, and the ripple amplitude of the load voltage is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of integrated circuits, and in particular to a charge pump voltage stabilization circuit, a voltage stabilization method, and a nonvolatile memory. Background technique [0002] A charge pump is a DC-DC converter that uses a capacitor as an energy storage element to generate an output voltage greater than the input voltage, or to generate a negative output voltage. The instability of the output voltage will affect the reliability of the charge pump. Therefore, the charge pump needs to stabilize the output voltage during operation. [0003] figure 1 It is a structural schematic diagram of a charge pump voltage stabilizing circuit commonly used in the prior art, figure 1 The working principle of the charge pump regulator circuit is as follows: the charge pump 101 generates the output voltage VOUT to provide energy for the load 103, and at the same time, the output voltage VOUT is di...

Claims

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Application Information

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IPC IPC(8): H02M3/07H02M1/14
CPCH02M1/14H02M3/07
Inventor 张现聚欧健魏胜涛
Owner GIGADEVICE SEMICON (BEIJING) INC
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