Bjtpower
Full Member level 5
I have designed Power supply for Quasi Flyback converter.
Input voltage-230VAC
Output Voltage-17VDC at 4A
Switcher frequency at full load is 48KHZ.
While radiated emissions test, I am failing by 2dB at 60MHZ and 120MHZ.
I did analysis with spectrum analyser and observed that at Bulk capacitor -ve and Shunt resistor below source of mosfet, I could see worse results.
Can anyone help with how we can mitigate this issue?
Regards,
Marx
Input voltage-230VAC
Output Voltage-17VDC at 4A
Switcher frequency at full load is 48KHZ.
While radiated emissions test, I am failing by 2dB at 60MHZ and 120MHZ.
I did analysis with spectrum analyser and observed that at Bulk capacitor -ve and Shunt resistor below source of mosfet, I could see worse results.
Can anyone help with how we can mitigate this issue?
Regards,
Marx