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SMPS (Switched Mode Power Supply)

Written By: 

Preeti Jain
Applications of SMPS:
·         Machine tool industries
·         Security systems like the CCTVs
·         AV products
·         Support supplies for Programmable Logic Controllers (PLCs)




Future Trends:


The future of the SMPS is aimed at making it more efficient which goes on to a better converter doing the most effective conversion process. The main focus of designers in making the SMPS efficient includes:
·         Higher output power
·         Achieving higher current output and low voltage
·         Increasing power density
·         Using switching device like Schottky diode
SiC Schottky diode can be used as an active device in place of a transistor with high switching frequency. These SiC Schottky diode are benchmark in 300-600 V range of operation. The switching characteristics of a SiC Schottky diode is shown here. SMPS11
Advantages of High Switching Frequencies:
·         Continuous current mode operation possible with ultrafast diode.
·         High switching frequencies with identical efficiency: smaller and cheaper passive components.
·         Absence of reverse recovery : smaller MOSFET and/or higher reliability
Learn about SMPS through exclusive images in the Insight teardown of a conventional SMPS.





Finally! This is just what I was lokonig for.

nice one


ok very well..... i got it thanks 4 your help

its not enough


how to check the smps not work

I Have Repaired these things Before,since We"re Dealing with High Voltage In The KHz Frequency Region I UNPLUG It First Then ....Do Resistance Checks Second,,Transistors Power FET;s Regulators and Scr;s,Then Transformers Capacitors Diodes and Resistors Next!!! For Safety Sake Use An Isolation Transformer with a Variac. I"ve Repaired 13.8 volt Power Supplies Using This Method and ALWAYS Keep 2N3055 Transistors In Stock for Possible Replacement

Shanghai Yongming Electronic Co., Ltd., which is a China-based manufacturer focused on designing &producing Aluminum Electrolytic Capacitors. Qualities has approved by current customers PHILIPS GE OSRAM TOSHIBA. 
Radial Leading & SMD capacitors in LED DRIVER, POWER SUPPLY:
1. Super long load life LLK series 20000hrs, LKZ series 15000hrs, LKG series 12000hrs at +105C 
2. Super high temperature LKL series 5000hrs at +130C
3. More smaller size LK7 series size 5*7mm, LKM series size 5*9mm
For datasheet and free samples if need, pls TEXT me at +1-2018985566 or whatapp+8615653007886 
or email to cwj(at)sh-ymin(dot)com/////
Kind Regards
Shanghai Yongming Electronic Co., Ltd.
Fengxian District,Shanghai 201406, China 
China +8615653007886
US +12018985566


check the smps work


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