Snubber / clamp capacitor

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abhishek.2138

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which type of capacitor used for snubber in flyback smps of around 20watts ?
 

Hi,

no voltage, no current?
No circuit?

Klaus
 

Input - 230Vac (15% tolerance), 50 Hz
Output- 24V, 0.5A
Device used- NCP1014AP06 (in built MOSFET of 700V & controller 65 KHz freq.)

want to know ceramic or film capacitor to be used for clamp & for snubber.

Here I am concerned with clamp now (for NCP1014AP06) but also want to know capacitor type for snubber.

Flyback topology used with no auxilary winding...( No aux winding needed for NCP1014 upto 14W)

Datasheet---

View attachment NCP1010-D.PDF
 
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You can use a ceramic capacitor which can tolerate upto few 100s of volts.

Thanks
 

ceramic yes, as in smd is less inductive than most film types.....and smaller......if you shovel your spec into power.com's free PI Expert software it will calculate the entire circuit and bom for you...and tell you the snubber cap part number etc
 

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