Electronics > Projects, Designs, and Technical Stuff
Bridge diode thermal problem
<< < (3/3)
Zero999:

--- Quote from: Md Mubdiul Hasan on October 08, 2019, 10:55:00 pm ---
--- Quote ---You should only be worried if you plan to use the device in an environment 35oC hotter, than where you tested it and measured these temperatures.
--- End quote ---

Yes. I did see in Saudi or middle east area, all componets were varified  for higher temparature rate!


--- Quote ---The bridge rectifier can stand much higher temperatures before being damaged and the forward voltage has a negative temperature coefficient, so power dissipation, thus heating will decrease, with increasing temperature.
--- End quote ---

Any mathematical equation exists relating those factor?

--- End quote ---
Yes, the temperate coefficient of an ordinary silicon diode is −2 mV/˚C. A very high currents though, it's not quite so clear cut, as there is a parasitic resistance, but it's normally negligible within the ratings.

Another way to reduce the power dissipation is to use Schottky diodes for the bridge, which typically drop half the voltage.
Md Mubdiul Hasan:

--- Quote from: RES on October 09, 2019, 09:10:39 am ---You can use an ideal diode bridge controller LT4320, or create a MOSFET bridge yourself (see diagram below) Instead of diodes MOSFETs are used.

https://www.analog.com/en/products/lt4320.html

--- End quote ---

Excellent !
Could you compare part list between yours with mine!
Does not it little bit expensive?
Reliable for sure.
Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod