Quick transient response CMOS (Complementary Metal Oxide Semiconductor) low-dropout regulator

Abstract

The invention discloses a quick transient response CMOS (Complementary Metal Oxide Semiconductor) low-dropout regulator. The inverted input end of an error amplification circuit is connected with reference voltage Vref, the in-phase input end of the error amplification circuit is connected with the sampling output end Vf of a sampling resistor circuit, and the output end of the error amplification circuit is connected with the gate of a power tube through a conversion rate increasing circuit. The positive power end of the error amplification circuit, the positive power end of the conversion rate increasing circuit and the source of the power tube are connected to form the input end Vin of a regulator body. The drain of the power tube and the positive power end of the sampling resistor circuit are connected to form the output end Vout of the regulator body. The negative power end of the error amplification circuit, the negative power end of the conversion rate increasing circuit and the negative power end of the sampling resistor circuit are connected to form the ground end GND of the regulator body. The quick transient response CMOS low-dropout regulator is higher in conversion rate and quicker in transient response.

Description

technical field [0001] The invention belongs to the technical field of power supplies, and in particular relates to a fast transient response CMOS low-dropout linear voltage 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 terms of power management, which has attracted the attention of researchers and enterprises. In order to be able to manage, regulate, and reduce power supply, a voltage regulator is usually required between the power supply and the electronics. At present, commonly used voltage regulators include low dropout linear regulators (LDOs), switching regulators and power management chips. [0003] Low dropout linear regulators (LDOs) 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 ...

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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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