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TPS25851-Q1: 4 to 6 port USB-C charging station for vehicles

Danilo A.
Mastermind 24735 points
Part Number: TPS25851-Q1
Other Parts Discussed in Thread: PMP20042, , LM5175, TPS25858-Q1, TPS25772-Q1, TPS55288-Q1, TPS55288

Hi Team,

Our customer is going to design a 4 to 6 port USB-C charging station for vehicles with supply voltage of 12V from the battery. They prefer to have 60w power output per port but if not feasible 45w will do. He is considering a PD system and looking at TPS25851-Q1 since it already includes the DC/DC converter. Since the power is coming from a 12V battery, does he need to add a boost converter such as LM5175 which is used in the PMP20042 reference design to power the TPS25851-Q1?

Due to the limitation of their soldering equipment, they preferred package that can be soldered using hot air. Is the TPS25858-Q1 a suitable device?

Since the total system power is 60W x 6 ports = 360W and there are 6 ports, he will need 360W, 12V to 20V boost converter and 3 units of TPS25858-Q1. Is this correct? Do we have a simpler solution?

Regards,

Danilo

  • 0
    TI__Mastermind 18556 points

    Hi Danilo,

    Assign to Bing, who is responsible for ROA.

    Best Regards,

    Kuno

  • +1
    TI__Intellectual 2370 points

    Hi Danilo,

    For power higher than 15W, we need PD controller, so the appropriate solution is TPS25772-Q1.

    But I have few below questions:

    What is 4 to 6 ports? 4 inputs and 6 outputs? Can you please send out a architecture diagram about the system? 

    TPS25772-Q1 is a dual port PD controller with one Buck-Boost converter, can support up to 65W on each port. That is, we have PD communication on both ports, but only one port can be support by internal DCDC (Port A). So we need an extra Buck-Boost TPS55288-Q1 to supply power for the second port (Port B).

    6 ports with 360 is a high power solution for a PD system, with solution of TPS25772 + TPS55288, we may need 3 pcs of TPS25772 and 3pcs of TPS55288.

    Thanks.

    Bing