The DisplayPort Pin 20 Problem

Re:The DisplayPort Pin 20 Problem by gizmo686 on Saturday May 26, 2018 @03:46PM (#17163904)

So now you need a 3.6V power regulator, in additition to the 3.3V one you likely already have for all the components built for 3.3V.

[ Parent | on HN ]

Re:The DisplayPort Pin 20 Problem by Faaak on Saturday May 26, 2018 @04:06PM (#17164011)

A Schottky will drop .3V; That's within the range (±10%) specified in the specs

[ Parent | on HN ]

Re:The DisplayPort Pin 20 Problem by kevincox on Saturday May 26, 2018 @05:09PM (#17164271)

Yes. But now you have given up all of your tolerance so you better have a perfect (or over-voltage) power supply. This means that you now have less choice in power supply.

[ Parent | on HN ]

Re:The DisplayPort Pin 20 Problem by Faaak on Saturday May 26, 2018 @06:18PM (#17164537)

As a parent commenter said, you could also put a diode for your circuitry. You would then have a single 3.7V supply.

[ Parent | on HN ]

Re:The DisplayPort Pin 20 Problem by snovv_crash on Sunday May 27, 2018 @06:31AM (#17166327)

And 10% higher power draw just for this one feature. No, there are better ways to solve this.

[ Parent | on HN ]

Re:The DisplayPort Pin 20 Problem by 0110011 on Saturday May 26, 2018 @04:05PM (#17164006)

Or another diode to put in-line with the DP circuitry. It's probably not ideal from a low-power perspective but if that's what you gotta do to make robust and compliant hardware, you do it.

[ Parent | on HN ]