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Part Number: BQ25890H
I'm trying to understand the proper USB cables to use with this part for the higher current modes. If I look in the USB 2.0 spec I see USB cables are about 28AWG and if I look in the USB power Delivery introduction from USB.org I see that traditional cables are limited to 1.5A.
Now if I go check out the reference board manual for this charger it looks like TI was happily drawing the full 3.25A using what looks to be a pretty standard USB cable. Can you help me understand what the right thing to do here is? I'm reading through the USB specs trying to wrap my head around it and any input is appreciated.
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In reply to Jeff F:
When you say it doesn't fully interface with PD connectors is this because it doesn't support looking at the CC lines? I had thought about using an MSP430 I have in the system to check the voltage there and adjust my current draw accordingly.
In reply to Eric Steimle:
Yes. Without the CC lines, you can't fully interface with USB PD.
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