High Voltage Spike in IR2110 gate driver

Thread Starter

myaeaindrathein1996

Joined Jun 11, 2021
16
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I used IR2110 for half bridge in wireless charging project. I got a very high voltage spike in transmitter coil. I used arduino uno for signal of IR2110 and one common ground for VDD, VCC, Arduino and DC voltage supply. I also tried UF4007 in parallel with MOSFETs and also used snubber RC in parallel with MOSFETs but it does not reduce any voltage spikes. And also HO voltage is a little bit lower than LO. What should I do? Can anyone suggest me?
 

Alec_t

Joined Sep 17, 2013
12,321
Please post your asc file, also a pic of the back of your circuit board.
At which circuit node are you seeing the spike?
What is the scope monitoring?
Where is the ground clip of the scope connected?
 

Thread Starter

myaeaindrathein1996

Joined Jun 11, 2021
16
Please post your asc file, also a pic of the back of your circuit board.
At which circuit node are you seeing the spike?
What is the scope monitoring?
Where is the ground clip of the scope connected?
The voltage of the transmitter coil shows the spike. The yellow graph of the scope shows the voltage of transmitter coil and blue graph shows the voltage of receiver coil. Each clip of scope directly connects the terminals of the coil.
 
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