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Alleviate the circuit with insufficient driving ability at the start of chip active mode

A technology of driving ability and driving current, which is applied in the field of circuits that alleviate the insufficient driving ability at the moment of starting the active mode of the chip, and can solve problems such as insufficient driving ability

Active Publication Date: 2021-11-12
XTX TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a circuit that alleviates the insufficient driving capability at the moment of starting the active mode of the chip, and aims to solve the problem of insufficient driving ability at the moment of starting the active mode of the existing flash chip drive circuit

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  • Alleviate the circuit with insufficient driving ability at the start of chip active mode
  • Alleviate the circuit with insufficient driving ability at the start of chip active mode
  • Alleviate the circuit with insufficient driving ability at the start of chip active mode

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0025] It should ...

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Abstract

The invention discloses a circuit for alleviating the insufficient driving ability at the start-up moment of the active mode of the chip. By adding a second current LDO module, the driving ability of the second current LDO module is equal to the driving ability of the third current LDO module and the first current LDO module. Between driving capabilities; when the flash chip is in standby mode, that is, when the EN enable signal is at a low level, only the third current LDO module works; when the EN enable signal is flipped to a high level, the establishment time of the first current reference module It is relatively slow, about 1us, but the second current LDO module can start quickly, so during the establishment time of the first current reference module 1us, the second current LDO module can provide a part of the current to ease the output during the 1us window period The voltage will be pulled down due to insufficient drive capability.

Description

technical field [0001] The invention relates to the technical field of semiconductor integrated circuits, in particular to a circuit for alleviating the insufficient driving capability at the start-up moment of the active mode of the chip. Background technique [0002] When the traditional flash chip is in standby mode, only the low-current reference module and the low-current LDO module work, and when switching to active mode (running state), the high-current reference module and the high-current LDO module are started. Such as figure 1 As shown, the low-current reference module and the low-current LDO module are always working during power-on. When there is a need for fast reading, the EN enable signal is turned to a high level to start the high-current reference module and the high-current LDO module. At this time Vint's demand for current has increased significantly, but due to the slow establishment time of the high-current reference module, about 1us, there is a 1us e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C16/30G11C5/14
CPCG11C5/148G11C16/30
Inventor 南锺基吴彤彤刘梦
Owner XTX TECH INC