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KUOWENYUNG
Level 3
Level 3
25 replies posted 100 sign-ins 50 sign-ins

Dear IFXer,

1. May I know C3 function of auxiliary supply and the XT04 spec of TR1?

https://www.infineon.com/dgdl/Infineon-Evaluation_board_KIT_1EDB_AUX_SiC-ApplicationNotes-v01_00-EN....

KUOWENYUNG_0-1668751816123.png

2. the bigger different between out pin and secondary side TL432 configure. why? there have any detail description can share us?

KUOWENYUNG_0-1668752481928.png

3. looks the secondary rectifier type, IFX like use current double rectifier circuit.

as I know depends on VCC to design it. 

if VCC is 5V, can use the voltage double.

if VCC is above 10V, can use current double, full bridge, full wave(push-pull), but why IFX use current double type? have any consideration?  

 

 

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Jingwei
Moderator
Moderator
Moderator
250 sign-ins 10 likes given 100 solutions authored

Hi,

I will give a quick answer to first question: https://www.mouser.com/datasheet/2/192/icecs00149_1-2271175.pdf

C3 is used to block the DC to avoid saturation of the transformer. Also filters some high frequency signals. OUTA-OUTB is AC signal, so it can pass the capacitor.

BR,

Steven

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Jingwei
Moderator
Moderator
Moderator
250 sign-ins 10 likes given 100 solutions authored

Hi,

I will give a quick answer to first question: https://www.mouser.com/datasheet/2/192/icecs00149_1-2271175.pdf

C3 is used to block the DC to avoid saturation of the transformer. Also filters some high frequency signals. OUTA-OUTB is AC signal, so it can pass the capacitor.

BR,

Steven

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