RE: RPi-4B and Power ?? Buck-Boost converter IC

Posted by AbeCollins (A) on January 15, 2021 at 06:57:33

In Reply to: RE: RPi-4B and Power ?? posted by zacster on January 14, 2021 at 14:20:36:

I have the iFi iPower and it works about as well as my $6 wall wart smps from Amazon ;-)

Inmate E-Stat reports that his Raspberry Pi sounds better with an external USB battery.

The only reason I can think of that might support the improvement from a technical perspective is that the battery is isolated from the AC mains during operation. Otherwise, USB battery packs are essentially DC-DC converters (switching power supplies) in that the relatively low 3.6v from the Li-Ion battery needs to be boosted to 5vdc. If there are 3.6v batteries in series in the battery pack, the higher voltage needs to be bucked down to 5vdc.

As for iFi's marketing department, they really know how to spin tech ;-)

iFi ad from a couple years back:
I think they pulled the ad cuz too many folks laughed at them!

Come on iFi, it's just a freak'n wall wart!

One of many buck-boost converter chips..... (Open in New Window)

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Follow Ups Full Thread

Topic - RPi-4B and Power ?? - tvr2500m 11:42:54 01/13/21 (19)

usb y cable - LtMandella 11:22:14 01/15/21 (0)

RE: RPi-4B and Power ?? - zacster 14:20:36 01/14/21 (2)

RE: RPi-4B and Power ?? Buck-Boost converter IC - AbeCollins 06:57:33 01/15/21 (1)

RE: RPi-4B and Power ?? Buck-Boost converter IC - zacster 17:20:22 01/15/21 (0)

RE: RPi-4B and Power ?? - soundchekk 01:31:12 01/14/21 (10)

RE: RPi-4B and Power ?? - fmak 01:45:24 01/16/21 (1)

RE: RPi-4B and Power ?? - soundchekk 05:51:00 01/16/21 (0)

Cable Length ? .................. - Cut-Throat 10:09:07 01/14/21 (0)

RE: RPi-4B and Power ?? - E-Stat 07:16:17 01/14/21 (6)

RE: RPi-4B and Power ?? - soundchekk 08:23:21 01/14/21 (5)

RE: RPi-4B and Power ?? - E-Stat 08:29:43 01/14/21 (4)

transient response - fmak 01:47:45 01/16/21 (1)

On a system level, yes - E-Stat 06:07:02 01/16/21 (0)

RE: RPi-4B and Power ?? - soundchekk 09:11:09 01/14/21 (1)

I greatly prefer listening to music - E-Stat 09:17:00 01/14/21 (0)

Ditto C-Ts advice - E-Stat 14:44:24 01/13/21 (0)

Here is what I do ................. - Cut-Throat 12:03:18 01/13/21 (2)

Fit to RPi4 - valvesonly 18:27:33 01/13/21 (1)

RE: Fit to RPi4 - Cut-Throat 03:59:13 01/14/21 (0)

Follow Ups

RE: RPi-4B and Power ?? Buck-Boost converter IC - AbeCollins 06:57:33 01/15/21 (1)

RE: RPi-4B and Power ?? Buck-Boost converter IC - zacster 17:20:22 01/15/21 (0)

RE: RPi-4B and Power ?? Buck-Boost converter IC

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