LED (Light Emitting Diode) switching power supply and multimode dimming circuit thereof
A dimming circuit and switching power supply technology, which is applied in the direction of lamp circuit layout, electric light source, light source, etc., can solve the problems of poor compatibility and high development cost
Inactive Publication Date: 2015-03-04
SHENZHEN SED IPD INT ELECTRONICS DEVICE
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to provide a multi-mode dimming circuit for LED switching power supplies, aiming at solving the problems of high development cost and poor compatibility in existing LED switching power supplies due to the use of a single dimming method
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0013] In the embodiment of the present invention, by adopting a multi-mode dimming circuit including a dimming signal processing module and a voltage stabilizing module in the LED switching power supply, the dimming signal output by the dimming controller of the LED switching power supply can be adaptively divided. And step-down processing, and correspondingly output resistance dimming control signal, voltage step dimming control signal or PWM dimming control signal, so that the central control module in the multi-mode dimming circuit enters the corresponding dimming working mode and controls the d...
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
Login to View More Abstract
The invention is suitable for the field of LED (Light Emitting Diode) drive and provides an LED switching power supply and a multimode dimming circuit thereof. Because the LED switching power supply adopts the multimode dimming circuit comprising a dimming signal processing module and a voltage stabilizing module, the multimode dimming circuit can be used for adaptively carrying out voltage division and voltage reduction on a dimming signal output by a dimming controller of the LED switching power supply, correspondingly outputting a resistance dimming control signal, a voltage stepped dimming control signal or a PWM (Pulse Width Modulation) dimming control signal and further enabling a central control module in the multimode dimming circuit to enter a corresponding dimming working mode and control a driving signal isolating output module to output a corresponding driving signal in an isolated manner, so that an LED driving circuit is enabled to to drive an LED load to work according to the corresponding dimming working mode, the dimming mode compatibility is promoted and the development cost is reduced simultaneously.
Description
technical field [0001] The invention belongs to the field of LED driving, and in particular relates to an LED switching power supply and a multi-mode dimming circuit thereof. Background technique [0002] As a new type of light source, LED is widely used in various fields because of its advantages of strong brightness, low power consumption and long life. At present, LED driving is generally realized by LED switching power supply. Due to different dimming requirements, It is necessary to configure LED switching power supplies using different dimming methods, that is, each dimming method requires corresponding changes and custom development of the dimming circuit in the LED switching power supply, so it will increase the development cost; The modification and custom development of the dimming circuit reflect the problem of poor compatibility of the existing LED switching power supply to a certain extent. Therefore, the existing LED switching power supply has the problems of ...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 岳丹金廉诗航巨祥生
Owner SHENZHEN SED IPD INT ELECTRONICS DEVICE