UC3842: UC3842

kawesa Nasser

Part Number: UC3842
Other Parts Discussed in Thread: UCC38C42

Dear Texas Instruments,

i am designing my switch mode power supply and intend to use the UC3842, however i need some assistance with the part numbers or values for the components i have highlighted in the attached schematic i extracted from the TI datasheet for UC3842 typical application example.

Thank you

regards,

Kawesa

over 6 years ago

0 John Stevens over 6 years ago

TI__Expert 7395 points

Kawesa

Thanks for your interest in TI.

What is your input voltage range, output voltage, and output current maximum?

You can also search for reference designs at Ti.com/powerlab in the meantime. Or you can use the Webench tool at TI.com/Webench

Or the Webench tool specific to uc3842 here:

Additionally I will also mention ucc38c42 is the newest version of the 3842 family.

Regards

John

0 kawesa Nasser over 6 years ago in reply to John Stevens

Prodigy 30 points

Thank you John for the reply,
My input

voltage range is 220 - 260 VAC

output

5 VDC 3A

let me also check out with Webench and the ucc38c42

0 John Stevens over 6 years ago in reply to kawesa Nasser

TI__Expert 7395 points

Kawesa,

Yes those specifications should work fine for UCC38C42. The quickest path for a schematic would be webench. Let me know if you have other questions but I'll assume you are all set at this point.

Regards,

John

Power management

Power management forum

UC3842: UC3842