Current mode reference voltage source with low power supply voltage

A reference voltage source and current mode technology, applied in the field of temperature compensation, can solve the problems of unadjustable output voltage, limited application range, complex circuit structure, etc., and achieve the effect of ultra-low power consumption

Inactive Publication Date: 2013-01-09
NAT UNIV OF DEFENSE TECH
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as the current bandgap voltage reference is concerned, the following two significant defects limit its application range:
[0003] 1. The output voltage of a typical bandgap voltage reference is about 1.2V, which limits its power supply voltage to be greater than 1.2V. With the advancement of integrated circuit technology and the development of portable consumer electronics products, the power supply voltage of integrated circuits is getting higher and higher. lower and lower, the typical bandgap voltage reference is no longer applicable;
[0004] 2. The output voltage of a typical bandgap voltage reference is a fixed value, and with the increase of the com

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
  • Current mode reference voltage source with low power supply voltage
  • Current mode reference voltage source with low power supply voltage
  • Current mode reference voltage source with low power supply voltage

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] The structure and working process of the current mode reference voltage source disclosed in the present invention will be described in detail below with reference to the accompanying drawings. The detailed description is carried out in two aspects. First, the working principle of the current mode reference voltage source disclosed in the present invention is introduced, and then a simple application example and experimental results are given.

[0020] The current mode reference voltage source disclosed in the present invention is such as figure 1 As shown, the whole circuit consists of two parts: a compensation current generating circuit and a reference voltage generating circuit, wherein the compensation current generating circuit needs to be provided with PTAT or CTAT current by an external circuit.

[0021] The compensation current generating circuit is composed of three PMOS transistors M1, M2, M4 and a resistor R1, wherein the gate of M1 and the gate of M2 are conn...

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 discloses a current mode reference voltage source based on downward current compensation. The current mode reference voltage source can work under quite low power voltage, and output voltage of the reference voltage source can be changed by adjusting device parameters. The current mode reference voltage source comprises a compensation current generating circuit and a reference voltage generating circuit.

Description

technical field [0001] The invention belongs to the field of integrated circuit design, and is used for generating a reference voltage in an integrated circuit. Specifically, it relates to a technology for temperature compensation by using the subtraction of two currents with the same variation within a certain operating temperature range. Background technique [0002] Current / voltage references are the basis for various circuit behaviors, and the stability of the reference circuit directly affects the overall circuit performance. With the increase in the complexity of integrated circuits and the development of low-voltage and low-power designs, reference circuits usually need to work normally at low supply voltages, and also need to be able to provide non-standard output reference voltages according to circuit requirements. Bandgap voltage reference is currently the most widely used and developed reference voltage source structure in integrated circuits. In typical bandgap...

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): G05F3/30
Inventor 马卓杨方杰李少青郭阳陈吉华赵振宇张民选窦强孙岩乐大珩何小威
Owner NAT UNIV OF DEFENSE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap