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Circuit for relieving insufficient driving capability at moment of starting active mode of chip

A driving ability and driving current technology, which is applied in the circuit field to alleviate the insufficient driving ability at the moment when the chip is activated in active mode, and can solve the problems of insufficient driving ability and so on.

Active Publication Date: 2021-03-12
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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  • Circuit for relieving insufficient driving capability at moment of starting active mode of chip
  • Circuit for relieving insufficient driving capability at moment of starting active mode of chip
  • Circuit for relieving insufficient driving capability at moment of starting active mode of chip

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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 relieving insufficient driving capacity at the moment of starting a chip active mode, which is characterized in that a second current LDO module is added, and thedriving capacity of the second current LDO module is between the driving capacity of a third current LDO module and the driving capacity of a first current LDO module; when the flash chip is in a standby mode, namely the EN enable signal is in a low level, only the third current LDO module works; when the EN enable signal is overturned to a high level, the establishment time of the first currentreference module is relatively slow and is about 1us, but the second current LDO module can be quickly started, so that a part of current can be provided by the second current LDO module within the establishment time of 1us of the first current reference module. And the problem that the output voltage is pulled down due to insufficient driving capability in an empty window period of 1us is relieved.

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