Unlock instant, AI-driven research and patent intelligence for your innovation.

DC/DC controller for realizing self-adaptive voltage adjustment technique

A technology of self-adaptive voltage and controller, applied in the direction of conversion equipment without intermediate conversion to AC, can solve problems such as limiting the accuracy of sampling circuits

Inactive Publication Date: 2006-09-06
FUDAN UNIV
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the current information directly affects the accuracy of the control, the design requirements of the current sampling circuit are relatively high. However, many factors limit the accuracy of the sampling circuit, and it is inevitable [8]
[2] proposes that it is impossible to achieve AVP with only the feedback voltage loop without sampling the current information

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
  • DC/DC controller for realizing self-adaptive voltage adjustment technique
  • DC/DC controller for realizing self-adaptive voltage adjustment technique
  • DC/DC controller for realizing self-adaptive voltage adjustment technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The present invention is further described below by way of examples. In this embodiment, the DC / DC controller is implemented in a digital manner, and the structure diagram is shown in Figure 5 . Switching frequency fsw = 1MHz. The output voltage is controlled by Vref, Vref is expressed by 8-digit code, the range is from 0 to 2v, the input voltage is 12v, the output current is 0 to 20A, C=8mF, L=390nH, equivalent to R C =2mΩ, equivalent to R L = 29.12mΩ. Take Ro=2mΩ. Since it is implemented in a digital way, the output voltage is sampled by the ADC circuit, and the PWM circuit uses a counter structure, so F in the formula (3) is expressed here as the product of the ADC and the PWM magnification, and the size is:

[0048] F = 1 q ADC 2 nPWM - - - ( 9 ...

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 present invention refers to DC / DC controller to realize self adaptation voltage regulation. Said controller is composed of one filter, one comparer, and one filter Hand PWM circuit. Said structure does not sample load current information to proceed compensation to reference voltage, making total system only adopting feedback voltage loop circuit to realize AVP, without designing high precision current sample circuit, effectively reducing design costs, without using any simplification in design process, to ensure excellent control performance.

Description

technical field [0001] The invention belongs to the technical field of adaptive voltage adjustment, and in particular relates to a DC / DC controller for realizing the adaptive adjustment technology. Background technique [0002] Adaptive Voltage Positioning (AVP, Adaptive Voltage Positioning), also known as Optimal Voltage Positioning, is a method that makes full use of the allowable output voltage range to effectively reduce the output capacitance and thereby reduce costs when the load changes suddenly. technology [2]. This technology is widely used in point-of-load DC / DCRegulators with loads such as high-performance CPUs, communication equipment, DSPs, image processors, etc., where large current transients exist, such as Intel's VRD standard It is explicitly required to use this technique to design the voltage regulation module [1] that supplies power to the CPU. [0003] The principle of AVP is as follows figure 1 as shown, figure 1 (a) Without using AVP technology, wh...

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): H02M3/10
Inventor 顾培培李文宏
Owner FUDAN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com