Ripple suppression circuit, ripple suppression method, and LED lamp applying ripple suppression circuit

A ripple suppression and ripple voltage technology, applied in the field of ripple suppression circuits and LED lights, can solve the problem of high output ripple, and achieve the effect of eliminating ripple, avoiding flicker or stroboscopic

Active Publication Date: 2016-03-16
SILERGY SEMICON TECH (HANGZHOU) CO LTD
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the output ripple of this type of switching power supply or DC converter is high and concentrated in the power frequency range

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
  • Ripple suppression circuit, ripple suppression method, and LED lamp applying ripple suppression circuit
  • Ripple suppression circuit, ripple suppression method, and LED lamp applying ripple suppression circuit
  • Ripple suppression circuit, ripple suppression method, and LED lamp applying ripple suppression circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0047] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0048] Meanwhile, it should be understood that in the following description, "circuit" refers to a conductive loop formed by at least one element or sub-circuit through electrical connection or electromagnetic connection. When an element or circuit is said to be "connected to" another eleme...

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 ripple suppression circuit, a ripple suppression method, and an LED lamp applying the ripple suppression circuit. Ripple reference voltage for representing the ripple is obtained by sampling the ripple from the output voltage of a direct current converter; and controlling the voltage at a load end to change along with the ripple by a transistor based on the ripple reference voltage. Consequently, the voltages at the two ends of the load change along with the ripple so as to enable the voltages of the load to be reduced to constant voltage; and therefore, the ripple acting on the load can be suppressed or eliminated, and the flicker or stroboflash of the LED load is avoided.

Description

technical field [0001] The invention relates to power electronics technology, in particular to a ripple suppression circuit, a method and an LED lamp using the same. Background technique [0002] The output of the switching power supply for driving the LED load usually contains ripples, wherein there will be power frequency or lower frequency ripples in the output current, and at the same time, the output voltage will also have ripples. Using such a switching power supply to directly drive the LED load will cause flicker or strobe. [0003] In a traditional switching power supply, a large electrolytic capacitor is used to store energy and provide a DC voltage for the subsequent LED load, so that the output current ripple of the driving power supply is very low. However, power factor correction cannot be provided in this way, and the electrolytic capacitor becomes the bottleneck of circuit lifetime. [0004] The switching power supply in the prior art usually adds a power f...

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 Applications(China)
IPC IPC(8): H02M1/14H05B44/00
CPCH02M1/14H02M1/143G05F1/56H05B45/3725
Inventor 黄秋凯邓建
Owner SILERGY SEMICON TECH (HANGZHOU) 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