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

Band-gap voltage reference source for high-order temperature compensation

A technology of high-order temperature compensation and voltage reference source, which is applied in the field of power supply to achieve the effect of improving power supply rejection ratio and linear adjustment performance

Inactive Publication Date: 2012-01-18
UNIV OF ELECTRONIC SCI & TECH OF CHINA
View PDF5 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems existing in the existing bandgap voltage reference source, and propose a bandgap voltage reference source with high-order temperature compensation

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
  • Band-gap voltage reference source for high-order temperature compensation
  • Band-gap voltage reference source for high-order temperature compensation
  • Band-gap voltage reference source for high-order temperature compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] The structural block diagram of the high-order temperature-compensated bandgap voltage reference source of the present invention is as follows: figure 1 As shown, it includes a start-up circuit, a first-order bandgap reference circuit, a high-order temperature compensation circuit, and a summation output circuit. The start-up circuit is used to provide a start-up bias voltage for the first-order bandgap reference circuit; the first-order bandgap reference circuit is used to generate a first-order bandgap reference voltage and a PTAT (Proportional To Absolute Temperature) current I PTAT ; The high-order temperature compensation circuit is used to generate a high-order temperature compensation current; the summation output circuit is used to convert the high-order temperature compensation current generated by the high-order temperature compe...

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 belongs to the technical field of power supplies, and discloses a band-gap voltage reference source for high-order temperature compensation, which specifically comprises a starting circuit, a first-order band-gap reference circuit, a high-order temperature compensation circuit and a summation output circuit. The band-gap voltage reference source works out the reference voltage by summating the first-order band-gap reference voltage which is generated by the first-order band-gap reference circuit and the voltage which is converted from the high-order temperature compensation current which is generated by the high-order temperature compensation circuit, and improves the temperature coefficient of the band-gap reference voltage source by introducing index compensation; the designed circuit simultaneously adopts two feedback loops, so that the power supply rejection ratio (PSRR) and the linear adjustability are improved; and simultaneously, because the low-voltage working requirement is met, the voltage reference source has a very wide scope of application.

Description

technical field [0001] The invention belongs to the technical field of power supply, and particularly relates to the design of a voltage reference source (Voltage Reference). Background technique [0002] As an integral part of the integrated circuit, the voltage reference source provides bias current and a reference voltage for the entire chip. The size of the bias current determines the power consumption of the entire chip. At the same time, in the chip, many error amplifiers and comparators use the reference voltage as the reference voltage. The stability of the voltage reference source determines the function of the chip to a large extent. implementation and performance advantages and disadvantages. [0003] High-precision voltage references are required in analog, digital-analog hybrid, and even purely digital circuits, such as oscillators, phase-locked loops, data converters, and flash memory control circuits. The stability of the voltage reference source directly de...

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
Inventor 周泽坤欧雪春朱培生石跃明鑫张波
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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