Power Supply
Hello
My name is Carlos, I did a power supply for a 150W amp type D, using the integrated circuit TOP261EN this funionando perfectly but I had a power problem being that in PI Expert software made with input from 95 to 240 Volts AC, works perfectly with the design voltage of 110 volts but 220Volts the integrated circuit TOP261EN crashed, and the project was to be done automatically with input voltage as above, I wish it were possible to give a parsed in my project and give me a hand to I can fix this problem. how do I send the wiring diagram and the drawing board to be madeanalize.
Best Regards
Carlos Leite
Files
| Attachment | 大小 |
|---|---|
| Power Supply_2.pdf | 145.81 KB |
评论
Hello
I noticed that another component that is too hot is the FR257 is normal? please help me
Best regards
Carlos Leite
Who built the transformer? What is the peak flux density at the peak Drain current that you designed into your TOP261?
What is the primary leakage inductance? Does the TVS (high voltage zener) also get hot?
Hello
Because it is a prototype of the transformer was built by me, I followed all the features provided by the PI Expert software, I think it is easier to get you through my project so you can analyze where is the possible problem.
Best regards
Carlos Leite
What is the peak Drain voltage?
Do you have Drain current and voltage waveforms at normal full load opeartion?
Hello
The drain voltage is 160V.
One question, the FR257 diode 1N5408 can be replaced by?
Best regards
Carlos Leite
Change the total resistance (r1//r2//r3//r4) from 6K to about 80 to 90 Kohms
Pls. double check the peak Drain voltage as input voltage is increased slowly. Check that it doesn't reach 700 V.