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USB Charger Port Design

Started by Richard April 7, 2019
I need to add a dedicated USB charger port to a product (no data).

After looking into USB charging standards I realize what a mess awaits me.

There are dedicated USB charger controllers out there like TIs TPS2511.

Has anyone experience with this?  I am doubting that I can create a charger that is all things to all devices.  For example Apple will charge at 2.4A with certain voltages on the data lines but I don't see a controller that do it.

Rich
Richard wrote...
> >I need to add a dedicated USB charger port to a product (no data). > >After looking into USB charging standards I realize what a mess awaits me. > >There are dedicated USB charger controllers out there like TIs TPS2511.
That lets you provide 10W charging, which is not a slouch. -- Thanks, - Win
On 2019-04-07, Richard <rsoennichsen@gmail.com> wrote:
> I need to add a dedicated USB charger port to a product (no data).
I'm assuming you're making a charger.
> After looking into USB charging standards I realize what a mess awaits me.
There's that new standard "USB Power delivery" championed by Qualcomm and some others, my laptop and my phone both use it. https://www.usb.org/usb-charger-pd
> There are dedicated USB charger controllers out there like TIs TPS2511. > > Has anyone experience with this? I am doubting that I can create a charger that is all things to all devices. For example Apple will charge at 2.4A with certain voltages on the data lines but I don't see a controller that do it.
Are you prepared to provide 100W on that port? Those with legacy devices can use adapter cables, which should be available from OEMs or 3rd parties if there is a demand... -- When I tried casting out nines I made a hash of it.
On Sunday, April 7, 2019 at 11:08:32 AM UTC-4, Winfield Hill wrote:
> Richard wrote... > > > >I need to add a dedicated USB charger port to a product (no data). > > > >After looking into USB charging standards I realize what a mess awaits me. > > > >There are dedicated USB charger controllers out there like TIs TPS2511. > > That lets you provide 10W charging, which is not a slouch. > > > -- > Thanks, > - Win
Especially for an iPhone, since Apple only provided 5W chargers with them until recently. Best I've seen is Qualcomm Quickcharge compatible which charge a phone really fast and many phones have it. But even that's a mess, other manufacturers follow similar methods, but it's their own standard and chargers, not an open standard. IDK what it costs for a QC compatible IC or where to get them, but Qualcom would.