Other Parts Discussed in Thread: TPS2546,
Hi,
I would like to ask you about the TPS2549 device.
(question 1)
Set "001" in the DCP mode setting.
The Current Limit Setting will be "Hi", but I will not use "Lo".
In this case, do I need to connect a resistor between ILIM_LO and GND? Or is it okay if the resistor is not connected?
(Question 2)
The following is described in the description of the STATUS item of the Pin function.
Is there a specific value for the load detection threshold value?
"Active-low open-drain output, asserted when the load exceeds the load-detection threshold"
(Question 3)
I think that setting CTL1, CTL2, CTL3 to "001" sets DCP mode and Divider3 mode.
Then, when power is supplied from the DCDC converter, DC5V should be output to the VBUS pin, and 2.7V each should be output to the DP and DM pins.
At this time, I understand that the above voltage is maintained unless a portable device is connected from the outside, but is it correct?
(Question 4)
If a portable device is connected from the outside and the portable device is in Divider3 mode, will the DP and DM pins continue to output 2.7V until the connection is disconnected?
(Question 5)
If a portable device is connected from the outside and the portable device is in Divider1 mode or Divider2 mode, how will the device behave?
(Question 6)
When an external portable device is connected from the unconnected state and the portable device is BC1.2 and YD/T 1594-2009, the DP and DM pins are short-circuited at 200Ω max, but What happens to the 2.7V that was initially output between the DP and DM pins?
(Question 7)
When an external portable device is connected from the unconnected state and the portable device is in 1.2V / 1.2 mode, the DP and DM are short-circuited at 200Ω max and 1.2V is applied, but What happens to the 2.7V that was initially output between the DP and DM pins?
(Question 8)
Will this device revert to the default Divider 3 mode when the external portable device is disconnected?
(Question 9)
I understand that there is no temporary interruption of VBUS when switching modes within DCP mode, but is that correct?
(Question 10)
I only use DCP mode. Therefore, DP-OUT and DM_OUT are not used.
In this case, can the DP-OUT and DM-OUT pins be open?
Best regards,