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Push-pull LDO circuit based on voltage flip follower structure

A technology of voltage reversal and follower, which is applied in the direction of instruments, electric variable adjustment, control/regulation systems, etc., to achieve the effect of improving transient response capability

Pending Publication Date: 2020-02-18
FOSHAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a push-pull LDO circuit based on a voltage reversal follower structure to solve one or more technical problems in the prior art, at least provide a beneficial option or create conditions

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  • Push-pull LDO circuit based on voltage flip follower structure
  • Push-pull LDO circuit based on voltage flip follower structure
  • Push-pull LDO circuit based on voltage flip follower structure

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Embodiment 1

[0016] Embodiment 1, reference figure 1 , a push-pull LDO circuit based on a voltage inversion follower structure, comprising: an input voltage terminal VDD, an output voltage terminal VOUT and a ground terminal GND. It also includes: a bias circuit 100 and a control circuit 200 . The bias circuit 100 includes: a first transistor M1, a second transistor M2, a third transistor M3, a fourth transistor M4, a fifth transistor M5, a sixth transistor M6, a seventh transistor M7 and a resistor Rs, the first The source of the transistor M1, the gate of the second transistor M2, the source of the third transistor M3, the source of the fourth transistor M4, and the source of the sixth transistor M6 are all connected to the input voltage terminal VDD, and the first transistor The gate of M1 is respectively connected to the gate of the fourth transistor M4 and the gate of the sixth transistor M6, and the drain of the first transistor M1 is respectively connected to the gate of the third ...

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Abstract

The invention discloses a push-pull LDO circuit based on a voltage flip follower structure. The push-pull LDO circuit comprises an input voltage end, an output voltage end, a grounding end, a bias circuit and a control circuit. A fourteenth transistor, a fifteenth transistor and a power tube form a voltage flip follower structure, and a bias circuit and a control circuit are utilized, so that thetransient response capability of the whole circuit is improved. The push-pull LDO circuit based on the voltage flip follower structure is mainly used in the technical field of integrated circuits.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a push-pull LDO circuit based on a voltage reversal follower structure. Background technique [0002] With the rapid development of semiconductor process technology, the power supply voltage of integrated circuits is getting lower and lower, which puts forward higher and higher requirements for the output voltage accuracy, response speed, and noise performance of the input voltage terminal. Therefore, the input voltage terminal management module plays an increasingly important role in the electronics industry. As an important input voltage terminal management module, LDO is widely used in SoC chip design because of its low noise, low cost, and fast transient characteristics. How to further improve the output accuracy and transient response performance of LDO has always been an urgent need in practical applications. Contents of the invention [0003] The purpose of...

Claims

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Application Information

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IPC IPC(8): G05F3/26
CPCG05F3/26
Inventor 鲁纬段志奎于昕梅蒋业文
Owner FOSHAN UNIVERSITY
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