What to phone companies use to cool their >1 Watt heat generating components
What to phone companies use to cool their >1 Watt heat generating components
(OP)
Modern phones are packing more and more processor power and RAM in their phones while phones are becoming slimmer.
Apart from more efficient components. I assume there is still a lot of power being dissipated by these components as heat. My question is what is the new cooling tech that is enabling this to happen?
Do phones have elaborate high conductivity heat sinks or are there other thermal management solutions that are becoming more prevalent?
Apart from more efficient components. I assume there is still a lot of power being dissipated by these components as heat. My question is what is the new cooling tech that is enabling this to happen?
Do phones have elaborate high conductivity heat sinks or are there other thermal management solutions that are becoming more prevalent?





RE: What to phone companies use to cool their >1 Watt heat generating components
Based on what I've seen, there are not many (any?) that require thermal compound during reassembly. In other words, not many (any?) heatsinks.
Wasting power as heat wouldn't do much for battery life. On the other hand, some phones reportedly do get warm when in use.
RE: What to phone companies use to cool their >1 Watt heat generating components
My guess would be the power amplifiers for the antenna are the most lossy items in there, though I have no hard data near me at the moment to back up such a supposition.
Dan - Owner
http://www.Hi-TecDesigns.com
RE: What to phone companies use to cool their >1 Watt heat generating components
The battery on my iPhone evaporates quickest, possibly caused by the phone getting warmest, when I'm using the GPS intensively.
I would look there.
A.
RE: What to phone companies use to cool their >1 Watt heat generating components
when you can be directly jacked into your visual cortex, battery life should improve.
TTFN (ta ta for now)
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RE: What to phone companies use to cool their >1 Watt heat generating components
But I do agree, the GPS chip does seem to dump a surprising amount of heat into the palm. 'twould be curious as to which wins out, GPS or PA.
Dan - Owner
http://www.Hi-TecDesigns.com
RE: What to phone companies use to cool their >1 Watt heat generating components
Interesting point. I use online (Google or OSM) and offline (OS 1:25k) mapping almost equally. Shouldn't be hard to slip a thermocouple down the back of the case of the phone and see if there's a difference in heat loading.
I'll see if I can find time to give it a go sometime this week.
A.
RE: What to phone companies use to cool their >1 Watt heat generating components
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: What to phone companies use to cool their >1 Watt heat generating components
Some mapping/navigation apps allow one to download the required map 'tiles', in various scales (zoom), in advance over your wifi at home. So that one can use the phone's GPS during an outing, but with zero mobile data used. Several years ago, I did exactly that on a trip to the UK. Zero mobile data used for the entire trip, even while using the phone's GPS to navigate.
But the GPS function by itself, even with the screen being off most of the time, still drained the iPhone's battery in just a couple of hours.
I understand that later generation of GPS chips (or that portions of chips) are getting a better in terms of power. One coworker claims that his smartwatch has a standalone GPS built into the smartwatch itself (I've not yet confirmed).
RE: What to phone companies use to cool their >1 Watt heat generating components
Trying to get a handle of how much heat does a typical phone have to dissipate to not fry the components.
RE: What to phone companies use to cool their >1 Watt heat generating components
GPS on that smart watch, or dead reckoning... the latter obviously doesn't need a GPS chip and can be surprisingly accurate for hours at a time.
Dan - Owner
http://www.Hi-TecDesigns.com
RE: What to phone companies use to cool their >1 Watt heat generating components
Correct answer would be about a watt (at most, very roughly), or much less on standby.
To calibrate your instincts, think about holding a 7-watt night light incandescent light bulb in your hand. That's 7 watts of power (heat), and it's much too hot to hold.
RE: What to phone companies use to cool their >1 Watt heat generating components
Dan - Owner
http://www.Hi-TecDesigns.com
RE: What to phone companies use to cool their >1 Watt heat generating components
Later I got a flip phone, replaced with similar types a few times. Battery voltage about 7V.
Currently using a Samsung S4 mini. Battery voltage 3.8V.
STF
RE: What to phone companies use to cool their >1 Watt heat generating components
The first few generations were limited by what components were commercially available.
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: What to phone companies use to cool their >1 Watt heat generating components
I think my point is: if you want to dissipate less heat, stop generating so much.
STF
RE: What to phone companies use to cool their >1 Watt heat generating components
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers