I am looking for a SMPS based power supply for three phase energy meter of specification:
Parameters Limits
1 Input voltage: 70-460 VAC, 3 phase4 wire 2 input frequency 50Hz 3 Input/output isolation Yes 4 output voltage /current 5V/2A/5V/150ma and 3.3V/50mA 5 total output power Max1W 6 efficiency 65% typical 7 Power factor correction No. 8 VA loss <3.5VA per phase @240VAC 9 constant current constant voltage No.
10 Magnetic field immunity yes.0.5Tesla for permanent DC Magnet. 0.27Tesla AC magnetic
Hope to have a solution from this forum. email me at: motubhayia@yahoo.com
Dear , you may get help from AN2131 @ www.st.com or AN1327/D @ www.onsemi.com. There are some examples at www.powerint.com also! goodlook.
Author
Satpal Singh
Date
4/20/2010 11:13:33 PM
Response topic
In Need of SMPS Solution
Message
can you pls. explain what exactly is the magnetic immunity you need:what distance from the power supply? I think that we can develop a P.S with the input range you need. You can write me directly at:g_suciu50@yahoo.com if is more convenient for you.
Author
g.sharf
Date
2/9/2010 12:58:52 PM
Response topic
In need of SMPS solution
Message
Please contact me: evertvb@xs4all.nl
Author
Saurabh
Date
2/9/2010 12:02:16 PM
Response topic
In need of SMPS solution
Message
Are you looking for vendors and would like to buy the Switching Power Supply or needs a Design help? Do you have theoretical knowledge on designing SMPS?
your specifications are inconsistent. As mentioned, your outputs are 11 W and not 1 W. Hope, The outputs are DC. you may contact me on my email nayan.shelat@gmail.com
