Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Novel transient response enhanced LDO

A transient response, a new type of technology, applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve the problem of difficult further improvement of transient response, and achieve the goal of improving anti-noise performance, enhancing transient response, and eliminating burrs Effect

Pending Publication Date: 2021-04-30
BRITE SEMICON SHANGHAI CORP
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, increasing the bandwidth will also increase the power consumption. In the case of limited power consumption, the bandwidth is limited, and the transient response is difficult to further improve. Therefore, a separate transient response enhancement circuit is needed to improve its response speed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Novel transient response enhanced LDO
  • Novel transient response enhanced LDO
  • Novel transient response enhanced LDO

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, those skilled in the art All other embodiments obtained by the skilled person without creative work belong to the protection scope of the present invention.

[0013] The present invention provides a novel transient response enhanced LDO, the overall circuit structure of which is as follows figure 2 As shown, it mainly includes the error amplifier EA, the adjustment tube MP, the feedback resistor network RA and RB, the feedback capacitor CA, the load capacitor CL and the load resistor Rout. State response of the transient response enhancement circuit TRANSIENT ENHANGCE.

[0014] The error amplifier EA includes M1-M10, wherein the substrates of M1-M4 and the sources of M1-M3 are connected to the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a novel transient response enhanced LDO. The novel transient response enhanced LDO comprises an error amplifier EA, an adjusting tube MP, feedback resistor networks RA and RB, a feedback capacitor CA, a load capacitor CL and a load resistor Rout. A transient response enhancement circuit TRANSIENT ENHANGCE is connected between the error amplifier EA and the grid electrode of the adjusting tube MP, and the TRANSIENT ENHANGCE comprises a hysteresis comparator, an ONE_SHOT and two NMOS tubes MN1 and MN2. The hysteresis comparator is used for collecting and comparing the drain voltage of the input differential pair transistor of the error amplifier EA, burrs of the obtained comparison result are eliminated through the ONESHOT, and the anti-noise performance of transient enhancement is improved. And the grid voltage of the adjusting tube MP is adjusted through the NMOS tube, so that the effect of enhancing the transient response of the load is achieved.

Description

technical field [0001] The invention relates to the field of circuit design, in particular to a novel transient response enhanced LDO. Background technique [0002] LDO is a DC step-down linear regulator, which can maintain a stable output voltage even when the input voltage or load current changes. Traditional LDO structures such as figure 1 As shown, its working principle is: VOUT=(R1+R2) / R2*VREF, when the load changes, for example, the load current increases, VOUT decreases, then VFB decreases, and VEA decreases through the error amplifier EA, thereby adjusting Adjust the tube MPASS to increase the current and increase the VOUT voltage. Through this negative feedback loop, the VOUT voltage is finally restored. The load transient response of a conventional LDO is adjusted through a negative feedback loop, and the larger the bandwidth of the LDO, the better the transient response. However, increasing the bandwidth will also increase the power consumption. In the case of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G05F1/56
CPCG05F1/561
Inventor 倪灿灿
Owner BRITE SEMICON SHANGHAI CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com