[AVR] ATMEGA32 interfacing IR2110

[ANS HAFEEZ]

SALAM
how to inteface ATMEGA32 with IR2110

Output of ATMEGA32 is about 2.5v with 50% PWM

i am using this Circuit when i connect PORTA pins to this circuit the output of PORTA become Zero .. . . .

one more question i m using 1KHz PWM and the value of C1 capacitor is 10uF in bootstrap circuit is it OK or i should use 22uF cap????

 

[kabeer02]

how many output do you have in your ATMEGA32 and how do you connect them?

 

[ANS HAFEEZ]

about 4 volt but when i connect portA to HIN and LIN pin of IR2110 it become dump
and didnt drive the motor

 

[rudr_p]

I think the control and power side are isolated so there is no need to make a common ground and the formula for cap value is available in one of the app note. Check the output before powering on the circuit if works then good and if its working for 10uf you dont need 22uf it will only increase charging time which is not good for higher frequency if ever u thought to work at higher frequency.

 

[kabeer02]

Can you send a snap shot of you output signal from the ATMEGA32?

 

[ANS HAFEEZ]

i do not hv any camera right now . . ..
first i check the output of PORTA which is about 4v as i connect this port to IR2110 the ouput of port become dumb this is my problem
do i need some kind of amplifier between ATMEGA32 and IR2110??