Timeline for USB plug in detection for charging port
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 20, 2017 at 21:08 | comment | added | Ale..chenski | @macdonaldtomw, with the standard host port (15k pull-downs), the default consumer current will be 500 mA, not 100. | |
| Jun 20, 2017 at 20:54 | comment | added | macdonaldtomw | thanks for the heads up @Ali Chen ! Looks like I probably want the port to be a "Standard Downstream Port" instead... as in grounding D+ and D- via two 15k resistors in order to limit the charging current consumed to 100mA | |
| Jun 20, 2017 at 17:53 | comment | added | Ale..chenski | @macdonaldtomw, no, quite opposite: if you provide the DCP signature (D+ and D- shorted with less than 200 Ohms), modern device designed to Battery Charging specifications v1.2 can draw 5 A right away, see Table 5-2 of composter.com.ua/documents/BC1.2_FINAL.pdf | |
| Jun 20, 2017 at 16:17 | comment | added | macdonaldtomw | Hey @Ali Chen, Isn't the higher-current (i.e. above 500 mA) requirement only applicable for devices that request a higher current using serial charge current negotiation protocols? In other words, if I just short the D+ and D- pins of the USB receptacle, then no USB-compliant device will ever attempt to draw more than 500 mA from the receptacle? | |
| Jun 20, 2017 at 15:38 | comment | added | Ale..chenski | @macdonaldtomw, keep in mind that charging ports nowadays should deliver up to 3 A or even 5 A of current, while ~$1 connectors usually barely rated for 1.5 A. And the Assmann connector is just $1.92 at Digikey in qty.10 | |
| Jun 20, 2017 at 15:33 | vote | accept | macdonaldtomw | ||
| Jun 20, 2017 at 15:33 | comment | added | macdonaldtomw | Hmm, $5.40 for a USB type-C receptacle with insertion detection pin... no thanks!!! I'll stick with the $1.22 Type A connector with insertion detection pin for now! Thanks for the info | |
| Jun 20, 2017 at 5:26 | history | answered | Ale..chenski | CC BY-SA 3.0 |