On Sunday, April 2, 2017 at 3:30:43 PM UTC-4, Dave M wrote:
The reference design for that chip shows a 0.27 ohm/1W resistor. Select a
low inductance type such as a carbon composition resistor here... definitely
not a wirewound type.

http://pdf1.alldatasheet.com/datashe...TR-W6000S.html

Cheers,
Dave M


wrote:
On Saturday, 1 April 2017 19:21:46 UTC, wrote:
l am working on a refrigerator board which uses STR-W6000S power ic
The resistor to pin 3 of the ic is burnt beyond recognition. l tried
to find out from the manufacturers data sheet but all the
application circuits there have no value marked on the resistors.
can anyone give a typical value or how to figure out this value?

Thanks l have changed the ic and try that value too

You definitely should spec a low inductance type for the source resistor at these freq, but even certain carbon comps are supposedly trimmed in a spiral pattern making them inductive..

There are non inductive types available but they're tough to find. Still, I'd try any resistor before a wirewound in this app.