Hi there.
I am working on a project called 'Soft- Switching of Buck-Boost converter' and I am facing the following problems:
1. There is an excessive voltage drop at the input terminals of my circuit. I am providing a dc voltage from a rectifier board. At the rectifier output terminals, the volage is fine but as soon as I connect it to my circuit, it registers a huge drop. The voltage at my input terminals doesnt seem to go above 5 V however much I increase the supply voltage through the variac.
2. There is an excessive heating of one of the power diodes. I feel that the voltage which is dropping at the input terminals is appearing at the diode. I have checked for this condition using a DMM. For eg. if I provide 15 V through a variac, I get a fixed 5V at the input and about 7-8V across the diose in question.
I have tried to debug the circuit but I can't find any flaw in the connection. The continuity test through the DMM also appears fine.
The load resistance I have used is 100 ohms, the resonant inductance is 180uH, the resonant capacitance is 50nF and the output capacitance is 1000uF.
I have attached the circuit diagram along with this thread.
Pls. go through it and help me correct the problem.
Regards
Kautilya
I am working on a project called 'Soft- Switching of Buck-Boost converter' and I am facing the following problems:
1. There is an excessive voltage drop at the input terminals of my circuit. I am providing a dc voltage from a rectifier board. At the rectifier output terminals, the volage is fine but as soon as I connect it to my circuit, it registers a huge drop. The voltage at my input terminals doesnt seem to go above 5 V however much I increase the supply voltage through the variac.
2. There is an excessive heating of one of the power diodes. I feel that the voltage which is dropping at the input terminals is appearing at the diode. I have checked for this condition using a DMM. For eg. if I provide 15 V through a variac, I get a fixed 5V at the input and about 7-8V across the diose in question.
I have tried to debug the circuit but I can't find any flaw in the connection. The continuity test through the DMM also appears fine.
The load resistance I have used is 100 ohms, the resonant inductance is 180uH, the resonant capacitance is 50nF and the output capacitance is 1000uF.
I have attached the circuit diagram along with this thread.
Pls. go through it and help me correct the problem.
Regards
Kautilya
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