TPS65983B: TPS65983B- Reverse current protection

Dhanasekaran velusamy

Prodigy 40 points

Part Number: TPS65983B
Other Parts Discussed in Thread: TPS65987D

Hi,

We are using the TI power delivery controller(TPS65983B) in our application. We need few technical clarification.

Our system has two power input path.

1. External AC-DC power input

2. USB Type C- Power source input

Condition 1:

External AC-DC power is the main power, which powers the entire system and also provides 20V, 4.25Amp(80W) through the USB Type-C connector.

Condition 2:

If external power source is not available then system will get the power through USB Type-C connector.

The same USB Type-C port would be used for source and sink.

Clarification Needed

1. Can we configure the TPS65983B in dual power port (Source and sink), If possible then Does the device itself take care of source and sink path or do we have to provide protection circuit?

2. If USB Type C port is configured as source port(Source the current) and by mistake user connect some power delivery device (Ex: Charger on that port) In that case Does device take care of reverse current, etc ?

3. While system is getting the power through the USB Type-C port , user may connect the External AC-DC power. In this case Does TPS65983B takes care of reverse current.

Thank you

Regards

Dhanasekaran.V

over 7 years ago

0 Eric Beljaars over 7 years ago

TI__Mastermind 36756 points

Hi Dhanasekaran,

The TPS65983B is only recommended for use with TBT devices that are following an Intel reference design. Are you following an intel reference design in your application? If not, I would recommend using the TPS65987D instead. The TPS65987D will take care of all RCP on the Type-C port.

If this answers your question, PLEASE select This resolved my issue

Thank you,

Eric

0 Dhanasekaran velusamy over 7 years ago in reply to Eric Beljaars

Prodigy 40 points

Dear Eric,

Thanks for your feedback, We are using the TBT devices and we are following the intel reference design.

Question:

1. Does TPS65983 take care of reverse current if more the external power sources are connected with system?.

2. If TPS65983 takes care of reverse current without additional external circuit, We will protect the reverse current flowing through the external AC-DC converter due to external power source through USB Type C connector ?

I have also attached the high level block diagram for your reference.

1401.TPS65983-POWER CONTROLLER.pdf

Could you share any design file, if it is available?

Thank you

Regards
Dhanasekaran.V

0 Dhanasekaran velusamy over 7 years ago in reply to Dhanasekaran velusamy

Prodigy 40 points

Dear Eric,

I have attached the block diagram for your reference. It would describe about high level architecture.

TPS65983-POWER CONTROLLER.pdf

Thank you

Regards

Dhanasekaran.V

0 Eric Beljaars over 7 years ago in reply to Dhanasekaran velusamy

TI__Mastermind 36756 points

Hi Dhanasekaran,

Thank you for sharing the block diagram, it is clear to me now. The TPS65983 will handle all reverse current protection on the power paths that it controls. It will protect the 2 internal power paths and the external N-Fet power path. However, it would not handle reverse currents coming from either type-c port and going into the external AC-DC Converter. There would need to be additional RCP on the DC Power Conn input.

If this answers your question, PLEASE select This resolved my issue

Thank you,
Eric

0 Dhanasekaran velusamy over 7 years ago in reply to Eric Beljaars

Prodigy 40 points

Dear Eric,

Thanks for your information.

Regards
Dhanasekaran.V

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TPS65983B: TPS65983B- Reverse current protection