Charge pump sharing flying capacitor

A charge pump and flying capacitor technology, applied in the field of voltage conversion, can solve the problems of a large number of chip pins, disadvantageous system miniaturization, and a large number of flying capacitors, etc., to save chip cost, number, and chip pins. Effect

Inactive Publication Date: 2015-06-03
WUXI ZGMICRO ELECTRONICS CO LTD
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In some applications, multiple power charge pumps are required to work simultaneously to generate multiple output voltages. In the prior art, each power charge pump is generally equipped with flying capacitors independently. T

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 sharing flying capacitor
  • Charge pump sharing flying capacitor
  • Charge pump sharing flying capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. Unless otherwise specified, the words connected, connected, and joined in this document mean that they are electrically connected directly or indirectly.

[0023] Since in some applications, multiple power charge pumps are required to work simultaneously to generate multiple output voltages, therefore, the present invention pr...

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 charge pump sharing a flying capacitor. The charge pump comprises a voltage conversion module, wherein a first switch, a capacitor and a sixth switch of the voltage conversion module are connected in sequence between an anode of a power supply and a second output end, and a cathode of the power supply is connected with a ground node; one end of a third switch is connected with the anode of the power supply, and the other end of the third switch is connected with a node between the capacitor and the sixth switch; one end of a second switch is connected with the ground node, and the other end of the second switch is connected with the node between the capacitor and the sixth switch; one end of a fourth switch is connected with a node between the first switch and the capacitor, and the other end of the fourth switch is connected with a first output end; one end of a fifth switch is connected with the node between the first switch and the capacitor, and the other end of the fifth switch is connected with the ground node; a first output module is connected between the first output end and the ground node; a second output module is connected between the second output end and the ground node; a drive module is used for controlling switch-on or switch-off of each switch. A plurality of charge pumps share the same set of flying capacitors at different time segments, so that the number of flying capacitors is reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of voltage conversion, in particular to a charge pump sharing a flying capacitor (Flying Capacitor). 【Background technique】 [0002] Currently, there are two classic circuits are called charge pumps (Charge Pump). One is used in the phase-locked loop circuit, connected to the rear stage of the frequency detector and phase detector, and generates a relatively stable voltage by charging and discharging the capacitor, so as to control the frequency of the voltage-controlled oscillator; the other is through the switching capacitor , used for voltage conversion, can provide a power output circuit with a larger output current. The charge pump circuit of the present invention is a subclass of the latter, and here, for the sake of distinction, the latter is called a power charge pump. [0003] In some applications, multiple power charge pumps are required to work simultaneously to generate multiple output voltag...

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): H02M3/07
CPCH02M3/07
Inventor 王钊
Owner WUXI ZGMICRO ELECTRONICS CO LTD
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