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.

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 Flyback 25W Switching Power Supply for Electric Vehicle

2014 ◽  
Vol 571-572 ◽  
pp. 889-892
Author(s):  
Zhu Lei Shao
Keyword(s):  
Electric Vehicle ◽  
Power Supply ◽  
Load Condition ◽  
Current Control ◽  
Control Mode ◽  
Maximum Pressure ◽  
Switching Power Supply ◽  
Switching Power ◽  
The Stability ◽  
Excellent Stability

In order to keep the stability of the control circuit of electric vehicle, a flyback switching power supply was designed in this paper. The flyback switching power supply adopting current control mode PWM chip UC3842, and the output power of flyback switching power supply is 25W. In the design process of flyback switching power supply, the component parameters of control loop are worked out thoroughly. The flyback transformer was designed by considering the maximum pressure value of power switch. From the experimental results, the flyback switching power supply can work stably in the full load condition. The flyback switching power supply has excellent stability and dynamic characteristics.

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.

Design of Radar Level Measurement Instrument Based on the UC3844

2013 ◽  
Vol 392 ◽  
pp. 709-712
Author(s):  
Jian Wei Leng ◽  
Xu Jia
Keyword(s):  
Output Power ◽  
Power Supply ◽  
Measurement Instrument ◽  
Switching Power Supply ◽  
Switching Power ◽  
Planning And Design ◽  
Level Measurement ◽  
Power Supply Circuit ◽  
Supply Planning ◽  
Internal Function

Introduced the internal function of UC3844, and analyzed the working important point of switching power supply. Planning and design of the radar level measurement instrument of multiple output power supply circuit.

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.

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%.

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