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A Fast Transient Response CMOS Low Dropout Linear Regulator

A low-dropout linear and transient response technology, applied in the power supply field, can solve the problem of low load transient response rate of low-dropout linear voltage regulators, and achieve the effects of speeding up charging and discharging, reducing load effects, and strong practicability.

Active Publication Date: 2016-05-18
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of low load transient response rate of the existing low dropout linear voltage regulator, and a fast transient response CMOS low dropout linear voltage regulator is provided, which has a higher slew rate and transient response

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  • A Fast Transient Response CMOS Low Dropout Linear Regulator
  • A Fast Transient Response CMOS Low Dropout Linear Regulator

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Embodiment Construction

[0020] A fast transient response CMOS low dropout linear regulator, such as figure 1 with 2 As shown, it is mainly composed of error amplifier circuit, slew rate enhancement circuit, power tube, sampling resistor circuit and compensation circuit. The inverting input terminal of the error amplifying circuit is connected with the reference voltage Vref, the non-inverting input terminal of the error amplifying circuit is connected with the sampling output terminal Vf of the sampling resistor circuit, and the output terminal of the error amplifying circuit is connected to the grid of the power tube through the conversion rate enhancement circuit; After the positive terminal of the power supply of the error amplifier circuit and the positive terminal of the slew rate enhancement circuit are connected with the source of the power tube, the input terminal Vin of the regulator body is formed; after the drain of the power tube is connected with the positive terminal of the power supply of...

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Abstract

The invention discloses a fast transient response CMOS low-dropout linear voltage regulator. The inverting input terminal of the error amplification circuit is connected to the reference voltage Vref, and the non-inverting input terminal of the error amplification circuit is connected to the sampling output terminal Vf of the sampling resistance circuit. The output terminal of the error amplifier circuit is connected to the gate of the power tube through the slew rate enhancement circuit; the positive power terminal of the error amplifier circuit, the positive power terminal of the slew rate enhancement circuit and the source of the power tube are connected to form the input of the regulator body terminal Vin; the drain of the power tube is connected to the positive power supply terminal of the sampling resistor to form the output terminal Vout of the voltage regulator body; the negative power supply terminal of the error amplifier circuit, the negative power supply terminal of the slew rate enhancement circuit and the negative power supply terminal of the sampling resistor After the terminals are connected, the ground terminal GND of the voltage regulator body is formed. The invention has higher conversion rate and transient response.

Description

Technical field [0001] The invention belongs to the technical field of power supplies, and specifically relates to a fast transient response CMOS low-dropout linear regulator. Background technique [0002] With the rapid development of very large scale integrated circuits (VLSI), system-on-chip (SoC) has attracted more and more attention, especially in power management, which has attracted the attention of researchers and enterprises. In order to be able to manage, stabilize and reduce noise on the power supply, a voltage stabilizer is usually required between the power supply and the electronic product. Currently, commonly used regulators include low-dropout linear regulators (LDO), switching regulators, and power management chips. [0003] Low dropout linear regulators (LDO) have the ability to provide a wide range of different voltages and currents, and are commonly used to provide regulated power for low-voltage digital circuits. The existing low-dropout linear regulator is m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/56
Inventor 韦保林李媛媛韦雪明徐卫林段吉海
Owner GUILIN UNIV OF ELECTRONIC TECH
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