Starting circuit for wide power band gap reference source

A technology of starting circuit and reference source, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve problems such as excessive starting current, output overshoot, and small starting current, and achieve the effect of avoiding overshoot.

Inactive Publication Date: 2014-05-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But such start-up current is uncontrollable, especially in high-voltage applications, the start-up current is too large and the output overshoot is not ideal.
However, if you want to take into account the fact that there is no overshoot when starting at high voltage, the starting curr

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
  • Starting circuit for wide power band gap reference source
  • Starting circuit for wide power band gap reference source
  • Starting circuit for wide power band gap reference source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Below in conjunction with accompanying drawing, describe technical scheme of the present invention in detail:

[0022] Such as figure 1 As shown, a startup circuit for a wide power bandgap reference source of the present invention is characterized in that it includes PMOS tubes MPB1, MPB2, MPB3, MPB4, MPB5, MPB6, MPB7, MPB8, MPB9, MPB10, MPB11, MPB12 , MPB13, MPB14; NMOS tubes MNB1, MNB2, MNB3, MNB4, MNB5, MNB6; diodes D1, D2, D3, D4; transistors QN1, QN2, QN3, QN4, QN5; resistors RB1, RB2, RB3, RB4, RB5; capacitor CB1 and the operational amplifier; where,

[0023] The source terminals of MPB1, MPB4, MPB5, MPB6, MPB7, MPB8, MPB9, MPB12, MPB13 and MPB14 are connected to the power supply voltage;

[0024] The gate of MPB1 and the gate of MNB1 are connected to enable signal;

[0025] The drain of MPB1 is connected to the source of MPB2, the gate and drain of MPB2 are connected to the source of MPB3, the gate and drain of MPB3 are connected to the collector and base of Q...

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 relates to the technical field of an integrated circuit, and in particular to a non-overshoot starting circuit for a wide power band gap reference source. The starting process is divided into two stages, the first stage is an enabling control start process, the initial stage of the second stage is combined with a two-stage load pipe in an operational amplifier to form a feedback loop, and output current is adjusted to be within a non-overshoot controllable range, so that non-ideal overshoot phenomenon in the start process is effectively avoided; meanwhile, a current path is kept in the circuit, so that the circuit enters a later stage to rapidly build reference voltage. Due to existence of soft start of the feedback loop, the starting circuit is free of overshoot when being started at high voltage, and can ensure enough start current when being started at low voltage, so that the reference normally works. Thus, application of non-overshoot and wide power supply range is achieved. The starting circuit disclosed by the invention is particularly applied to the starting circuit for the wide power band gap reference source.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a non-overshoot starting circuit for a wide power bandgap reference source. Background technique [0002] The reference voltage source is an important component unit module in an analog integrated circuit chip, which is used to generate a voltage reference that does not change with the power supply voltage and temperature, and provides a reference voltage for other circuit modules. Since the reference voltage source is often accompanied by two stable states, in order to ensure that the reference circuit can successfully get rid of the non-ideal state of zero current after power-on, and reduce the adverse effects caused by the offset voltage and offset current during power-on, it is necessary to design a startup circuit, to ensure that the circuit can still work normally after a disturbance occurs in the reference circuit, and after the reference source works normally,...

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 周泽坤王霞石跃崔佳男张竹贤明鑫王卓张波
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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