A Flyback Switching Power Supply Based on L6561 for LED

2014 ◽  
Vol 960-961 ◽  
pp. 1264-1267
Author(s):  
Zhu Lei Shao
Keyword(s):  
Power Supply ◽  
Power Efficiency ◽  
Input Voltage ◽  
Maximum Output ◽  
Switching Power Supply ◽  
Output Current ◽  
Voltage Range ◽  
Switching Power ◽  
Switch Power Supply ◽  
Office Equipment

A flyback switching power supply was designed, which can drive LED stability. The switching power supply is the single-ended flyback structure, and based on PWM driver chip L6561. The input voltage range of the switching power supply is 85V to 265V. The output voltage is 15V and the maximum output current is 2A. The switch power supply is suitable for mobile phone, office equipment and LED. According to experiment, the switching power supply can steadily drive 5 LED, the ripple factor of output is 1.33%, the power efficiency is 85.7%.

The Design of a New-Type LED Switching Power Supply Circuit

2014 ◽  
Vol 986-987 ◽  
pp. 1877-1880
Author(s):  
Elin Jing ◽  
Zheng Feng Sun ◽  
Hong Yuan Wen
Keyword(s):  
Power Supply ◽  
Current Mode ◽  
Input Voltage ◽  
Constant Current ◽  
Switching Power Supply ◽  
Voltage Range ◽  
Supply Circuit ◽  
Switching Power ◽  
Power Supply Circuit ◽  
New Type

A new-type LED switching power supply circuit using flyback converter is designed based on current-mode PFC controller chip L6562. The circuit has some characteristics such as simple structure, wide input voltage range, output stability and reliable operation. The experimental results show that the system efficiency is up to 89.46% when the input voltage changes from 85V to 265V(AC), meanwhile the system works stably with constant current and constant voltage output.

A Novel Single-Ended Flyback High Frequency Regulated LED Driver Power Supply

2012 ◽  
Vol 542-543 ◽  
pp. 997-1000 ◽  
Author(s):  
Jin Jian Zhang ◽  
Xian Song Fu ◽  
Ping Juan Niu ◽  
Yi Li Liu
Keyword(s):  
Power Supply ◽  
Current Mode ◽  
Input Voltage ◽  
The Novel ◽  
Switching Power Supply ◽  
Led Driver ◽  
Voltage Range ◽  
Switching Power ◽  
Battery Chargers ◽  
Switched Mode Power Supply

A steady output single-ended flyback switching power supply using L6561 current mode PWM controller designed in this paper. The designed circuit consists of single-ended flyback topology and based on the peak current PWM technology. The circuit has input voltage range from 85V AC to 265V AC and about output drive capability of 12V/2A. Based on the specific chip L6561, the novel single-ended flyback AC/DC converting circuit is adapted for mobile or office equipment, off-line battery chargers. The low-power Switched-Mode Power Supply (SMPS) are the most noticeable examples of application that this configuration can fit. The testing results show that the design of this method can reduce the switching power supply ripple, and ensure stable voltage output.

Series Switching Power Supply with Wide Input Voltage Based on Dual-Loop Control

2013 ◽  
Vol 739 ◽  
pp. 454-457
Author(s):  
Hong Mei Xu ◽  
Yong Gao Jin
Keyword(s):  
Power Supply ◽  
Low Cost ◽  
Short Circuit ◽  
Input Voltage ◽  
Switching Power Supply ◽  
Loop Control ◽  
Voltage Range ◽  
Switching Power ◽  
Overcurrent Protection ◽  
Capacitive Load

The circuit of series switching power supply based on voltage and current dual-loop control is proposed, which can work in the voltage range from 12V to 90V. It is less influence to working state when capacitive load is accessed. The circuit have the function of quickly response, short circuit protection and overcurrent protection. The power supply have advantages of low-cost and working stability, which can be used to different various industry alarms and blasting signal lights in the wide voltage range.

Design of Switch Transformer about the Push-Pull Switch Power Supply

2013 ◽  
Vol 341-342 ◽  
pp. 1266-1270
Author(s):  
Gang Wu ◽  
Yu Tang
Keyword(s):  
Power Supply ◽  
High Efficiency ◽  
Skin Effect ◽  
Circuit Simulation ◽  
Switching Power Supply ◽  
Switching Power ◽  
The Family ◽  
Switch Power Supply ◽  
Design Requirements ◽  
Switch Power

the push-pull switch power is a kind of form in the family. It has the characteristics of good voltage output, high efficiency, the simple circuit and so on. On the design of the push-pull switch power supply, the key and difficult point is the design of switch transformer. Taking the switch transformer of a push-pull switching power supply as the research object and based on the design requirements, this paper aims to realize the calculation of the coil turns in switching transformer. Meanwhile, under the consideration of the skin effect and the proximity effect and the choices of switch transformers wires and the methods of wires winding, the design of switch transformer of the push-pull switch power supply has been completed by circuit simulation and implementation.

Design of Switch Transformer about Half Bridge Switching Power Supply

2014 ◽  
Vol 986-987 ◽  
pp. 1799-1803
Author(s):  
Yu Tang ◽  
Gang Wu
Keyword(s):  
Power Supply ◽  
High Efficiency ◽  
Circuit Simulation ◽  
Switching Power Supply ◽  
Switching Power ◽  
Voltage Output ◽  
The Family ◽  
Switch Power Supply ◽  
Design Requirements ◽  
Selection Of

Half bridge switching power supply is a kind of form in the family. It has the characteristics of good voltage output, high efficiency, the simple circuit and so on. On the design of the half bridge switching power supply, the key and difficult point is the design of switch transformer. Taking the switch transformer of a half bridge switching power supply as the research object and based on the design requirements, this paper aims to realize the calculation of the coil turns and the selection of core in switching transformer. the design of switch transformer of the push-pull switch power supply has been completed by circuit simulation and implementation.

A Method to Improve Switching Power Supply Efficiency at Light Load with DSP Control

2016 ◽  
Vol 698 ◽  
pp. 133-141
Author(s):  
Chuan Gao ◽  
Guang Lei Jin ◽  
Ri Chen Jiang ◽  
Mu Rong Li ◽  
Masashi Ochiai ◽  
...  
Keyword(s):  
Power Supply ◽  
Power Efficiency ◽  
Control Method ◽  
Efficiency Improvement ◽  
Switching Power Supply ◽  
Power Circuit ◽  
Switching Power ◽  
Light Load ◽  
Result Show ◽  
Dsp Control

This paper discusses a digital control method for efficiency improvement of switching power circuit at light load by using C2000 Series DSP (Texas Instruments Inc.). In this work, we alter the module in DSP to adjust the link voltage between a bridgeless PFC AC/DC converter and a phase shift full bridge DC/DC converter, as well as to control the PWM frequency of power circuit in order to improve the power efficiency in a suitable way. Our experiments result show that the efficiency of the power circuit at half or light load improves by adjusting the link voltage and/or PWM frequency

Research on 5V Internal Power Supply Circuit of Switching Power Supply

2014 ◽  
Vol 571-572 ◽  
pp. 950-954
Author(s):  
Zhu Lei Shao
Keyword(s):  
Power Supply ◽  
Input Voltage ◽  
Experimental Result ◽  
Switching Power Supply ◽  
Zener Diode ◽  
Supply Circuit ◽  
Switching Power ◽  
Power Supply Circuit ◽  
Circuit Structure ◽  
The Stability

In order to guarantee the stability working of internal circuit of switching power supply, an internal power supply circuit with stabilization output was designed in this paper. Based on the voltage stabilization principle of zener diode, the internal power supply circuit put the high input voltage into 5v output voltage. Because of using module circuit, the circuit structure is simplified effectively. Based on 0.35um BCD technology, the internal power supply circuit was built in PSPICE. According to the experimental result, the internal power supply circuit can output stably in different input voltage and environmental temperature.

Design of a High Voltage Switching Power Supply with Soft Switching Technology

2014 ◽  
Vol 536-537 ◽  
pp. 1493-1496
Author(s):  
Zhu Lei Shao
Keyword(s):  
High Voltage ◽  
Power Supply ◽  
Soft Switching ◽  
Switching Power Supply ◽  
High Voltage Power Supply ◽  
Soft Switch ◽  
Switching Power ◽  
Switch Power Supply ◽  
Application Requirements ◽  
Voltage Switching

Aiming at the application requirements of miniaturization and energy saving in the field of high voltage power supply, a high voltage switching power supply with soft switching technology was designed. The soft switch technology which makes the loss of switch power supply decrease obviously,and the dual voltage rectifier technology can effectively reduce the volume of switching power supply. Circuit parameters of switching power supply are optimized in order to further improve the efficiency of power supply. From the experiment results, the high voltage switching power supply meets the design requirements, and suitable for the strict requirements of environment on the volume and efficiency.

Design of the Positive and Negative Buses Voltage-Sharing Converter

2013 ◽  
Vol 427-429 ◽  
pp. 1250-1253
Author(s):  
Yu Li Ma ◽  
Yu Shan Ma
Keyword(s):  
Power Supply ◽  
Design Method ◽  
Switching Power Supply ◽  
Voltage Range ◽  
Switching Power ◽  
Auxiliary Power ◽  
Design Plan ◽  
Bus Voltage ◽  
Power Capability

The converter can supply auxiliary power and ensure bus balances on the hardware. The converter used design method of single-ended flyback, clamping-diodes balanced the positive and negative buses. The design plan and parameter are described. The practice shows that the circuit can provide auxiliary power capability of 60W and the uneven degree of the positive and negative buses is 1.8V. The circuit can be used in any switching power supply, whose bus voltage range is ±(260-450)V.

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