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

Charge pump output voltage regulation circuit

A technology for adjusting circuits and output voltages, applied in output power conversion devices, electrical components, conversion equipment without intermediate conversion to AC, etc. problem, to achieve the effect of eliminating ripple, small size and small layout area

Active Publication Date: 2015-12-09
SHANGHAI HUAHONG GRACE SEMICON MFG CORP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the setting of the filter capacitor will occupy a large area, which is very unfavorable for the increasingly shrinking integrated circuit layout design.

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
  • Charge pump output voltage regulation circuit
  • Charge pump output voltage regulation circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] see figure 2 The regulator circuit shown has roughly the same structure as the prior art. The current discharge principle: the output port of the charge pump 1 is connected to the first end of the load 3, and the second end of the load 3 is connected to the first end of the current source 4. end, the second end of the current source 4 is grounded; the gate of the transistor 2 is connected to the second end of the load 3, one of the source and the drain of the transistor 2 is connected to the output port of the charge pump 1, and the other is used as a regulating circuit output port. This embodiment is described by taking the load 3 as a resistance device.

[0015] The innovation of this embodiment is that the inventor changed the filter capacitor 5 connected between the output port of the charge pump 1 and the ground in the prior art to be connected between the second end of the load 3 and the ground, thereby ensuring Regulates the voltage at the output port of the c...

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 an improved output voltage regulator circuit of a charge pump, comprising a load, a current source and a transistor, wherein the first end of the load is connected with an output port of the charge pump; the second end of the load is connected to the first end of the current source; the second end of the current source is earthed; the grid electrode of the transistor is connected to the second end of the load; the source electrode or the grid electrode of the transistor is connected to the output port of the charge pump, and the other one is used as an output port of the regulator circuit. The regulator circuit further comprises a filter capacitor connected between the second end of the load and the earth. The filter capacitor arranged in the mode can eliminate the ripple wave of the output port of the regulator circuit and has the advantages of small size and small layout area occupying an integrated circuit.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to an output voltage regulating circuit for a charge pump. Background technique [0002] Charge pump is a capacitive voltage converter, which is mainly used to boost the circuit voltage. Because of its simple circuit and high efficiency, it can be widely used in integrated circuits powered by a single power supply. For example, it can be used as an EEPROM (EEPROM) or flash memory (FlashMemory) provides a voltage signal higher than the power supply voltage for data write operations. [0003] Generally speaking, the output voltage of the charge pump will be higher than the required voltage value, so the output voltage adjustment circuit is often set to clamp the output voltage of the charge pump at the required value, and the output voltage adjustment circuit can also improve Stability of the charge pump output voltage. [0004] In the prior art, there are mainly two structur...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/07H02M1/14
Inventor 杨光军
Owner SHANGHAI HUAHONG GRACE SEMICON MFG 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