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Hi All,
Now, I got the DC Link stability problem solved :-)
I think it is due to staircase saturation.
I felt the DC-DC switching frequency is too high as it may create heavy losses. So I changed that to 20KHz.
Now both DC-DC and DC-AC section switches at 20KHz.
Then, I Increased the...
I measured the current flowing through each leg upto 240W. They are showing same value for both.
After this 240W load, the pulse output from SG3525A reaching its MAX 0.44 duty and stays constant.
Hi all, The flickering problem above mentioned got cleared now. Found the 12V supply for SG3525A got dipping to 7V and so the things happened. Now I am feeding with external 12V supply and it is stable for load upto 640W load. But the DC link is the problem now. Upto 240W the DC link is stable...
The error amp of SG3525A's Inverted input is connected to 5.1V reference which is generated internally by the IC itself. The non inverted input is connected to the Voltage feedback. Voltage Feedback loop is through an isolated linear optocoupler. Feedback circuit gives 1:1 output. i.e as per...
HI, I am using SG3525A for controlling Push-Pull Converter.
Our entire circuit comprises of Dc-Dc section , followed by a DC-AC section. Its a 800VA Home Inverter.
DC-Dc Specifications:
Push pull configuration
Input Voltage : 10-17V DC
Input current : 80A @ 10V Input
Output : 350V DC...
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