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cross mob
e_moir
Level 2
Level 2
10 replies posted 25 sign-ins First like given

Hello,

I am interested in these questions, please help me.

in the design the resonant frequency is 93kHz. In the circuit, if you calculate the resonant frequency of the parallel resonant circuit, you get 1Mhz. Since C74,C74 is much larger than C91-C96, it can be neglected. We obtain:

photo_2022-09-16_10-38-46.jpg

photo_2022-09-16_10-39-07.jpg

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1 Solution
sushank
Moderator
Moderator
Moderator
25 solutions authored 100 sign-ins 50 replies posted

hi,

these capacitors helps in achieving ZVS for both the mosfet.

Thanks,

View solution in original post

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sushank
Moderator
Moderator
Moderator
25 solutions authored 100 sign-ins 50 replies posted

Hi, 

application note states that 93khz is the optimal operating series resonance frequency and not the one used in the design. 

sushank_0-1663578915119.png

 

thanks,

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e_moir
Level 2
Level 2
10 replies posted 25 sign-ins First like given

what function do the c91-c96 capacitors perform in the design?

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sushank
Moderator
Moderator
Moderator
25 solutions authored 100 sign-ins 50 replies posted

hi,

these capacitors helps in achieving ZVS for both the mosfet.

Thanks,

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