TPS65987D: 20V/5A USB-PD Power Source only

Michael Koelbl

Part Number: TPS65987D
Other Parts Discussed in Thread: TPS55288, TPS25750,

For a mobile charging station we need an USB-PD - PS only - circuit, which can deliver up to 20V/5A (100W). As we need a buck-boost converter the application "USB Type C Power Delivery Source with TPS65987D and TPS55288" seems to fit. Now I've found an article that TPS25750 better fits for high currents. Even when using the two FETs of TPS65987D in parallel the power dissipation is very high. As I have enough space I could use an external FET, too, but the circuitry shown in TPS65987EVM is rather extensive. If necessary I can add a MCU for "conecting" PD-controller and buck-boost.

Can you tell me which PD controller and buck-boost converter fits best for my application?

over 5 years ago

0 Adam Mc Gaffin over 5 years ago

TI__Mastermind 30000 points

Hi Michael,

I've assigned this issue to the relevant expert who will get back to you shortly

0 Hari Patel1 over 5 years ago

TI__Genius 12700 points

Hi Michael,

Yes you could use the TPS25750D for your application, it can support the power that you need and as you mentioned, the FETs are integrated which would save you the additional space you would need with the TPS65987D.

For the buck-boost converter, I have tagged an expert from the team who may be able to help. Helen chen do you have any recommendations?

Thank you,
Hari

0 Michael Koelbl over 5 years ago in reply to Hari Patel1

Intellectual 290 points

Hello Hari,

the high current path of the TPS2575D is mainly applied to sink applications (Laptop). Can I use AND can I customize it per GUI as source?

0 Hari Patel1 over 5 years ago in reply to Michael Koelbl

TI__Genius 12700 points

Hi Michael,

The TPS25750D is also capable of being a high power Source as there is a power path that can be used as both source and sink. I would recommend reading the User's Guide to see how to set it up as a High Voltage Source.

Thank you,

Hari

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TPS65987D: 20V/5A USB-PD Power Source only