Z
zenerbjt
Guest
Dear Engineers,
We are using a Traco THN 20-4811WI DCDC module on our PCB to supply 5V, 5.5W. Vin is 48VDC.
With the PCB in open-air-lab-ambient at 25degC, we record (with Flir TG167 Thermal cam) case temperature of 62degC on the DCDC module case. (This is a believable reading as the case feels quite hot to the finger).
Now, I have done discrete 48Vin to 5vout, 6W Sync Buck converters before, and none of the components are anything like this hot.
Do you think there is some problem with these DCDC modules?
(As a comparison, when we use the JTK3048S05 DCDC module for the same thing, the case is much cooler…about 32degC.)
Traco THN 20-4811WI DCDC module datasheet:
https://www.farnell.com/datasheets/2706771.pdf
JTK3048S05 datasheet:
https://www.xppower.com/portals/0/pdfs/SF_JTK30.pdf
We are using a Traco THN 20-4811WI DCDC module on our PCB to supply 5V, 5.5W. Vin is 48VDC.
With the PCB in open-air-lab-ambient at 25degC, we record (with Flir TG167 Thermal cam) case temperature of 62degC on the DCDC module case. (This is a believable reading as the case feels quite hot to the finger).
Now, I have done discrete 48Vin to 5vout, 6W Sync Buck converters before, and none of the components are anything like this hot.
Do you think there is some problem with these DCDC modules?
(As a comparison, when we use the JTK3048S05 DCDC module for the same thing, the case is much cooler…about 32degC.)
Traco THN 20-4811WI DCDC module datasheet:
https://www.farnell.com/datasheets/2706771.pdf
JTK3048S05 datasheet:
https://www.xppower.com/portals/0/pdfs/SF_JTK30.pdf