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Cell phone fast charging circuits

Started by Unknown November 14, 2018
Hello,

My Motorola phone supports "Turbo" charging, apparently charging my phone at 9-12V after establishing a secret handshake with the charger.

https://www.motorola.com/us/products/turbopower

Is there a chip that performs this authentication?

I'd like to build a car charger for my phone without blowing it up, but I haven't seen any sample schematics.

All I've seen is a reference to a Qualcomm patent:
https://patents.google.com/patent/US9748788

Apparently Turbopower is compatible with the Qualcomm method.

Oh!  I found this too, which mentions details on the secret handshake:
http://www.ti.com/lit/ug/tidu917/tidu917.pdf

but this seems odd to build a boost converter to boost 5V to 12V, especially if vehicle power is available at 12-14V already.

Any suggestions?

Thanks,

Michael

On Wednesday, November 14, 2018 at 1:49:28 PM UTC-8, mrda...@gmail.com wrote:
> Hello, > > My Motorola phone supports "Turbo" charging, apparently charging my phone at 9-12V after establishing a secret handshake with the charger. > > https://www.motorola.com/us/products/turbopower > > Is there a chip that performs this authentication? > > I'd like to build a car charger for my phone without blowing it up, but I haven't seen any sample schematics. > > All I've seen is a reference to a Qualcomm patent: > https://patents.google.com/patent/US9748788 > > Apparently Turbopower is compatible with the Qualcomm method. > > Oh! I found this too, which mentions details on the secret handshake: > http://www.ti.com/lit/ug/tidu917/tidu917.pdf > > but this seems odd to build a boost converter to boost 5V to 12V, especially if vehicle power is available at 12-14V already. > > Any suggestions? > > Thanks, > > Michael
I may have answered my own question... https://www.mouser.com/ProductDetail/Power-Integrations/CHY100D?qs=sGAEpiMZZMsfD%252bbMpEGFJa7H9npwZ8pUPWzL67uItEk%3d Input voltage specs seem a little low for vehicle use though. I guess I'll need a Buck after all... https://www.mouser.com/datasheet/2/328/chiphy_family_datasheet-269468.pdf Michael
On Wednesday, November 14, 2018 at 1:56:00 PM UTC-8, mrda...@gmail.com wrote:
> On Wednesday, November 14, 2018 at 1:49:28 PM UTC-8, mrda...@gmail.com wrote: > > Hello, > > > > My Motorola phone supports "Turbo" charging, apparently charging my phone at 9-12V after establishing a secret handshake with the charger. > > > > https://www.motorola.com/us/products/turbopower > > > > Is there a chip that performs this authentication? > > > > I'd like to build a car charger for my phone without blowing it up, but I haven't seen any sample schematics. > > > > All I've seen is a reference to a Qualcomm patent: > > https://patents.google.com/patent/US9748788 > > > > Apparently Turbopower is compatible with the Qualcomm method. > > > > Oh! I found this too, which mentions details on the secret handshake: > > http://www.ti.com/lit/ug/tidu917/tidu917.pdf > > > > but this seems odd to build a boost converter to boost 5V to 12V, especially if vehicle power is available at 12-14V already. > > > > Any suggestions? > > > > Thanks, > > > > Michael > > > I may have answered my own question... > https://www.mouser.com/ProductDetail/Power-Integrations/CHY100D?qs=sGAEpiMZZMsfD%252bbMpEGFJa7H9npwZ8pUPWzL67uItEk%3d > > Input voltage specs seem a little low for vehicle use though. I guess I'll need a Buck after all... > > https://www.mouser.com/datasheet/2/328/chiphy_family_datasheet-269468.pdf > > Michael
And that led me to... https://www.mouser.com/datasheet/2/631/ACT4526_Datasheet-1291191.pdf from this list: https://active-semi.com/products/dcdc-converters/high-power M
On Wednesday, November 14, 2018 at 5:06:26 PM UTC-5, mrda...@gmail.com wrote:
> On Wednesday, November 14, 2018 at 1:56:00 PM UTC-8, mrda...@gmail.com wrote: > > On Wednesday, November 14, 2018 at 1:49:28 PM UTC-8, mrda...@gmail.com wrote: > > > Hello, > > > > > > My Motorola phone supports "Turbo" charging, apparently charging my phone at 9-12V after establishing a secret handshake with the charger. > > > > > > https://www.motorola.com/us/products/turbopower > > > > > > Is there a chip that performs this authentication? > > > > > > I'd like to build a car charger for my phone without blowing it up, but I haven't seen any sample schematics. > > > > > > All I've seen is a reference to a Qualcomm patent: > > > https://patents.google.com/patent/US9748788 > > > > > > Apparently Turbopower is compatible with the Qualcomm method. > > > > > > Oh! I found this too, which mentions details on the secret handshake: > > > http://www.ti.com/lit/ug/tidu917/tidu917.pdf > > > > > > but this seems odd to build a boost converter to boost 5V to 12V, especially if vehicle power is available at 12-14V already. > > > > > > Any suggestions? > > > > > > Thanks, > > > > > > Michael > > > > > > I may have answered my own question... > > https://www.mouser.com/ProductDetail/Power-Integrations/CHY100D?qs=sGAEpiMZZMsfD%252bbMpEGFJa7H9npwZ8pUPWzL67uItEk%3d > > > > Input voltage specs seem a little low for vehicle use though. I guess I'll need a Buck after all... > > > > https://www.mouser.com/datasheet/2/328/chiphy_family_datasheet-269468.pdf > > > > Michael > > > And that led me to... > https://www.mouser.com/datasheet/2/631/ACT4526_Datasheet-1291191.pdf > > from this list: > https://active-semi.com/products/dcdc-converters/high-power > > M
Well good, I'm glad that's cleared up. Always happy to help. :^) George H.
On Thursday, November 15, 2018 at 12:48:31 PM UTC-8, George Herold wrote:
> On Wednesday, November 14, 2018 at 5:06:26 PM UTC-5, mrda...@gmail.com wrote: > > On Wednesday, November 14, 2018 at 1:56:00 PM UTC-8, mrda...@gmail.com wrote: > > > On Wednesday, November 14, 2018 at 1:49:28 PM UTC-8, mrda...@gmail.com wrote: > > > > Hello, > > > > > > > > My Motorola phone supports "Turbo" charging, apparently charging my phone at 9-12V after establishing a secret handshake with the charger. > > > > > > > > https://www.motorola.com/us/products/turbopower > > > > > > > > Is there a chip that performs this authentication? > > > > > > > > I'd like to build a car charger for my phone without blowing it up, but I haven't seen any sample schematics. > > > > > > > > All I've seen is a reference to a Qualcomm patent: > > > > https://patents.google.com/patent/US9748788 > > > > > > > > Apparently Turbopower is compatible with the Qualcomm method. > > > > > > > > Oh! I found this too, which mentions details on the secret handshake: > > > > http://www.ti.com/lit/ug/tidu917/tidu917.pdf > > > > > > > > but this seems odd to build a boost converter to boost 5V to 12V, especially if vehicle power is available at 12-14V already. > > > > > > > > Any suggestions? > > > > > > > > Thanks, > > > > > > > > Michael > > > > > > > > > I may have answered my own question... > > > https://www.mouser.com/ProductDetail/Power-Integrations/CHY100D?qs=sGAEpiMZZMsfD%252bbMpEGFJa7H9npwZ8pUPWzL67uItEk%3d > > > > > > Input voltage specs seem a little low for vehicle use though. I guess I'll need a Buck after all... > > > > > > https://www.mouser.com/datasheet/2/328/chiphy_family_datasheet-269468.pdf > > > > > > Michael > > > > > > And that led me to... > > https://www.mouser.com/datasheet/2/631/ACT4526_Datasheet-1291191.pdf > > > > from this list: > > https://active-semi.com/products/dcdc-converters/high-power > > > > M > > Well good, I'm glad that's cleared up. > Always happy to help. :^) > > George H.
Many thanks :D Sometimes researching while writing a question clears things up. Although, I'm surprised I haven't found many amateur circuit builders playing with the ACT4526 or the CHY100D... Michael D.
On Thursday, November 15, 2018 at 3:58:31 PM UTC-5, mrda...@gmail.com wrote:
> On Thursday, November 15, 2018 at 12:48:31 PM UTC-8, George Herold wrote: > > On Wednesday, November 14, 2018 at 5:06:26 PM UTC-5, mrda...@gmail.com wrote: > > > On Wednesday, November 14, 2018 at 1:56:00 PM UTC-8, mrda...@gmail.com wrote: > > > > On Wednesday, November 14, 2018 at 1:49:28 PM UTC-8, mrda...@gmail.com wrote: > > > > > Hello, > > > > > > > > > > My Motorola phone supports "Turbo" charging, apparently charging my phone at 9-12V after establishing a secret handshake with the charger. > > > > > > > > > > https://www.motorola.com/us/products/turbopower > > > > > > > > > > Is there a chip that performs this authentication? > > > > > > > > > > I'd like to build a car charger for my phone without blowing it up, but I haven't seen any sample schematics. > > > > > > > > > > All I've seen is a reference to a Qualcomm patent: > > > > > https://patents.google.com/patent/US9748788 > > > > > > > > > > Apparently Turbopower is compatible with the Qualcomm method. > > > > > > > > > > Oh! I found this too, which mentions details on the secret handshake: > > > > > http://www.ti.com/lit/ug/tidu917/tidu917.pdf > > > > > > > > > > but this seems odd to build a boost converter to boost 5V to 12V, especially if vehicle power is available at 12-14V already. > > > > > > > > > > Any suggestions? > > > > > > > > > > Thanks, > > > > > > > > > > Michael > > > > > > > > > > > > I may have answered my own question... > > > > https://www.mouser.com/ProductDetail/Power-Integrations/CHY100D?qs=sGAEpiMZZMsfD%252bbMpEGFJa7H9npwZ8pUPWzL67uItEk%3d > > > > > > > > Input voltage specs seem a little low for vehicle use though. I guess I'll need a Buck after all... > > > > > > > > https://www.mouser.com/datasheet/2/328/chiphy_family_datasheet-269468.pdf > > > > > > > > Michael > > > > > > > > > And that led me to... > > > https://www.mouser.com/datasheet/2/631/ACT4526_Datasheet-1291191.pdf > > > > > > from this list: > > > https://active-semi.com/products/dcdc-converters/high-power > > > > > > M > > > > Well good, I'm glad that's cleared up. > > Always happy to help. :^) > > > > George H. > > > Many thanks :D > > Sometimes researching while writing a question clears things up.
Sure I find the same thing... I start writing a question to SED and half way through my brain comes up with what might be the answer. George H.
> > Although, I'm surprised I haven't found many amateur circuit builders playing with the ACT4526 or the CHY100D... > > Michael D.
On Friday, November 16, 2018 at 6:50:33 AM UTC-8, George Herold wrote:
> On Thursday, November 15, 2018 at 3:58:31 PM UTC-5, mrda...@gmail.com wrote: > > On Thursday, November 15, 2018 at 12:48:31 PM UTC-8, George Herold wrote: > > > On Wednesday, November 14, 2018 at 5:06:26 PM UTC-5, mrda...@gmail.com wrote: > > > > On Wednesday, November 14, 2018 at 1:56:00 PM UTC-8, mrda...@gmail.com wrote: > > > > > On Wednesday, November 14, 2018 at 1:49:28 PM UTC-8, mrda...@gmail.com wrote: > > > > > > Hello, > > > > > > > > > > > > My Motorola phone supports "Turbo" charging, apparently charging my phone at 9-12V after establishing a secret handshake with the charger. > > > > > > > > > > > > https://www.motorola.com/us/products/turbopower > > > > > > > > > > > > Is there a chip that performs this authentication? > > > > > > > > > > > > I'd like to build a car charger for my phone without blowing it up, but I haven't seen any sample schematics. > > > > > > > > > > > > All I've seen is a reference to a Qualcomm patent: > > > > > > https://patents.google.com/patent/US9748788 > > > > > > > > > > > > Apparently Turbopower is compatible with the Qualcomm method. > > > > > > > > > > > > Oh! I found this too, which mentions details on the secret handshake: > > > > > > http://www.ti.com/lit/ug/tidu917/tidu917.pdf > > > > > > > > > > > > but this seems odd to build a boost converter to boost 5V to 12V, especially if vehicle power is available at 12-14V already. > > > > > > > > > > > > Any suggestions? > > > > > > > > > > > > Thanks, > > > > > > > > > > > > Michael > > > > > > > > > > > > > > > I may have answered my own question... > > > > > https://www.mouser.com/ProductDetail/Power-Integrations/CHY100D?qs=sGAEpiMZZMsfD%252bbMpEGFJa7H9npwZ8pUPWzL67uItEk%3d > > > > > > > > > > Input voltage specs seem a little low for vehicle use though. I guess I'll need a Buck after all... > > > > > > > > > > https://www.mouser.com/datasheet/2/328/chiphy_family_datasheet-269468.pdf > > > > > > > > > > Michael > > > > > > > > > > > > And that led me to... > > > > https://www.mouser.com/datasheet/2/631/ACT4526_Datasheet-1291191.pdf > > > > > > > > from this list: > > > > https://active-semi.com/products/dcdc-converters/high-power > > > > > > > > M > > > > > > Well good, I'm glad that's cleared up. > > > Always happy to help. :^) > > > > > > George H. > > > > > > Many thanks :D > > > > Sometimes researching while writing a question clears things up. > Sure I find the same thing... I start writing a question to SED and > half way through my brain comes up with what might be the answer. > > George H. > > > > Although, I'm surprised I haven't found many amateur circuit builders playing with the ACT4526 or the CHY100D... > > > > Michael D.
On that note, I did some tests to see if the TurboCharging is worth it or if it's all in my head. The 2.1A charger gave me a linear charge rate charging my phone from 55% battery to 81%, and charged at a rate of 0.68% per minute. My Motorola Turbo Charger gave me a linear charge rate from 53% to 77% and charged at a rate of 1.4% per minute, then slowed down after 77%. This is more than twice as fast as the 2.1A charger. Michael