Low-power-consumption high-transient-response low-dropout linear regulator without off-chip capacitor

A technology without off-chip capacitors and low-dropout linearity, which is applied in high-efficiency power electronic conversion, instruments, and regulation of electrical variables, etc., to achieve the effects of improving transient response performance, reducing the number of poles, and increasing bandwidth

Pending Publication Date: 2022-08-02
HANGZHOU DIANZI UNIV FUYANG ELECTRONIC INFORMATION RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, in view of the existing needs and the defects in the current technology, it is necessary to conduct

Method used

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  • Low-power-consumption high-transient-response low-dropout linear regulator without off-chip capacitor
  • Low-power-consumption high-transient-response low-dropout linear regulator without off-chip capacitor
  • Low-power-consumption high-transient-response low-dropout linear regulator without off-chip capacitor

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Embodiment Construction

[0038] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] see figure 1 , which is a schematic structural diagram of a low-power, high-transient-response, off-chip capacitor-free low-dropout linear regulator according to an embodiment of the present invention, Figure 4 is a corresponding circuit diagram, including a direct drive type error amplifier 10, an N-type power output stage 20, an adaptive impedance transient enhancement circuit 30 and a compensation capacitor 40, wherein,

[0040] The direct drive type error amplifier 10 includes two input terminals, the two input terminals are respectively directly connected to the feedback voltage node formed by the reference voltage and the resistor in the N-type power output stage 20, and its output terminal is connected to the control of the N-type power adjustment stage. terminal, drive the N-type power adjustment stage according to the volt...

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Abstract

The invention discloses a low-power-consumption, high-transient-response and off-chip-capacitor-free low-dropout linear regulator. A grid direct-current bias network is used for providing grid bias voltage needed by working of a power amplification transistor. The drain direct-current bias network is used for providing drain bias voltage required by the work of the power amplification transistor; the input end impedance matching network comprises a microstrip line, a blocking capacitor and an RC parallel circuit; the output end impedance matching network comprises a harmonic control network and an elliptical low-pass filtering matching network, and the harmonic control network selects two frequency points outside a passband to perform secondary harmonic control; the elliptic low-pass filtering matching network is obtained by improving a six-order Chebyshev low-pass filter, two transmission zero points are generated outside a working frequency band, and conversion from fundamental wave impedance to second harmonic impedance is achieved. According to the invention, the power amplifier can realize high efficiency and high gain in a super-quintuple frequency working bandwidth.

Description

technical field [0001] The invention belongs to the technical field of linear regulators, in particular to a low-power-consumption, high-transient-response, and low-dropout linear regulator without off-chip capacitance. Background technique [0002] With the continuous progress of integrated circuit design and process, more and more circuits are integrated together. Usually a large-scale digital-analog hybrid chip contains multiple different digital and analog circuit modules. The analog circuit module needs to serve the digital module. For example, the analog power management module needs to provide a stable voltage for the digital module. The most commonly used power management module It is LDO (low dropout regulator, low dropout linear regulator). [0003] Nowadays, the frequency of digital modules is getting higher and higher, which also brings challenges to the design of analog modules. For example, in the application of ADC (analog to digital converter, analog-to-digi...

Claims

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Application Information

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IPC IPC(8): G05F3/26
CPCG05F3/26Y02D10/00
Inventor 程知群陈宇乐超周涛
Owner HANGZHOU DIANZI UNIV FUYANG ELECTRONIC INFORMATION RES INST CO LTD
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