TPS2117: The application issues of chips

Please help us take a look at these issues as soon as possible. The customer is rather anxious. Thank you!

Hi ,

Please let me check and get back asap.

Regards 

Kunal Goel

Is there a result yet? I'm in a hurry to reply. Thank you!

In addition, during our usage, there is a probability that the switch will not be successful. The waveform appears like this, making it seem as if the TPS2117 is not responding. May I ask what might cause this problem?

We would like to know the reason behind the "break-Pre-Make" design of TPS2117, which will help us determine if there are any issues with our design.

Hi Tony,

1. How much is VIN1 and VIN2?

When mode is low device will select channel with higher voltage. 

We would like to know the reason behind the "break-Pre-Make" design of TPS2117, which will help us determine if there are any issues with our design.

Not sure on reason. 

You can use TPS2121 if you want switchover.

Regards

Kunal Goel

The design has been readjust. Please help check if there are any issues. If there are, please provide a detailed explanation and offer suggestions for improvement. This is for important clients' project applications. Thank you!

Hi ,

What is customer application requirement? I will review schematic based on that. 

Regards

Kunal Goel

1，Automatically switch to the backup battery when unplugging the main battery。

2，When the main battery is at 0V, inserting the Type-C adapter can activate the VIN1 channel main battery and charge it.
3，Due to the limitation of reverse power supply in tps2117, we have added a bypass to supply power to the battery. When connected to the Type-C adapter, the battery can be charged through a bypass.

4，The operation of lowering the mode pin has been retained, and it is hoped that TPS2117 will be turned off during bypass charging. Of course, if TPS2117 can remain open. That's also OK.

Thanks. I will check and get back by Monday eod.