Hi
I want to build a half bridge inverter using Arduino Mega 2560, IR2110 and 6N60 MOSFETs. So I generated a sine wave in Arduino and its invert as attached photo where the blue signal is original and grey one is its invert . The schematics of the circuit is also attached. The problem is when I apply the gating signals (a 1k resistor is connected at the out put as load), the mosfets drain about 2A. After some review of the circuit and its component connections, I found that IR2110 pin 1 and 3 getting short at the first few seconds. I also tried to create dead time by subtracting few values (2) from inverted signal means when the original signal is at 175, the inverted one is at 255-(175-2)=82. The frequency of the gating signal is about 1hz (can be changed from 0 to 50hz using 10k pot in Arduino programming ), and all GNDs are connected to each other. How to solve the problem? Should I replace the sine gating signal with square one or other type signals?
Thank you in advance.
I want to build a half bridge inverter using Arduino Mega 2560, IR2110 and 6N60 MOSFETs. So I generated a sine wave in Arduino and its invert as attached photo where the blue signal is original and grey one is its invert . The schematics of the circuit is also attached. The problem is when I apply the gating signals (a 1k resistor is connected at the out put as load), the mosfets drain about 2A. After some review of the circuit and its component connections, I found that IR2110 pin 1 and 3 getting short at the first few seconds. I also tried to create dead time by subtracting few values (2) from inverted signal means when the original signal is at 175, the inverted one is at 255-(175-2)=82. The frequency of the gating signal is about 1hz (can be changed from 0 to 50hz using 10k pot in Arduino programming ), and all GNDs are connected to each other. How to solve the problem? Should I replace the sine gating signal with square one or other type signals?
Thank you in advance.
Attachments
-
54.6 KB Views: 19