Other Parts Discussed in Thread: TPS2546
Hi Team,
My customer start to consider TPS254x on thier applications. Then there are general questions as below. Could you support?
Regards,
Kotaro Yamashita
*********************Questions*********************
Q1: TPS2543, TPS2546
They understand /STATUS signal are used for load detect feature. If they don’t use this function, they can set CTL1-3 configuration that don’t require /STATUS output?
Q2:
Can OUT pin support 5V connection when EN = H or L? They concern about miss connection. Is there any issue on this configuration? E.g. damaged device or reverse current OUT to IN and so on.
Q3:
When device enter DCP Auto mode, this condition can’t detect CDP, isn’t it?
Q4:
When device enter CDP mode(CTL1-3 = H), They think Apple device which require 2.1A charge current can’t success hand shake. Is it correct?
In this case, Is max charging current is ILIM?
They expected device limit 1.5A(=ILIM) current when 2.1A required device will be connected.
Q5:
Currently this application only care about SDP mode(USB memory), however they would like to support CDP mode(tablet PC etc.) with BC1.2 controller. So, can they change SDP mode to CDP mode thought CTL1-3 configuration? If so, is there any sequence?
Q6: cont-Q5
Can TPS254x detect SDP or CDP required device? What is the usage of two level current thresholds which device has?
They would like to detect USB memory or Tablet PC and would like to set current limit as 0.5A or 1.5A.
Q7:
Can TPS254x offer fault information of CDP hand shake to HOST? If can’t, is there any way to detect this information?
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