• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 64 subscribers
  • Views 925 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ25890H: USB-PD support with Li-Ion charger?

PowerMaster
Prodigy 90 points
Part Number: BQ25890H
Other Parts Discussed in Thread: TUSB321AI, TUSB422

Hello

We integrated the 5A Li-Ion charger BQ25890H in the power management of our USB-C device for fast charging Li-Ion batteries with maximum 5A. As a power source we tested a USB-PD power adapter, but it does not work. We do not get any voltage at the USB voltage pins. Other USB-C adapter (Quickcharge 3.0 or 3A 5V charger with USB-C connector) work fine. I assume there is a problem with the hand shake. My questions to you:
- Does the BQ25890H support USB-PD yes or no?
- If no, is there a pin compatible version of TI which supports USB-PD and does not require a redesign of the hardware?
- If yes, can someone help us with the right handshake?

Thank you for your support.

Felix

  • 0
    TI__Guru**** 155056 points

    Felix,

    bq25890H does not support USB-PD directly.  With host software controlling the D+/D- voltage levels, it may be possible to produce the correct handshake. This appnote explains how to interface with other HVDPC adaptors: www.ti.com/.../slua786.pdf.   I will ask our software design team in China if they have developed a USB-PD handshake routine. 

  • 0 in reply to Jeff F
    TI__Guru**** 155056 points
    Felix,

    You will need a separate USB-PD IC that can use the CC lines for PD communication.
  • 0 in reply to Jeff F
    Prodigy 90 points
    Dear Jeff

    Thank you very much.

    I saw that TI provides two types of CC controller ICs. The TUSBxx (simple ICs) and TSPxx (more complex ICs).

    TI provides for the setup of 5V and 3A standalone ICs which are called TUSB321AI for instance. The package is a simple QFN.
    But if more than 5V is needed there is no standalone version as far as I have seen. I only found one IC of TI in the TUSBxx product line, which can get more than 5V out of a USB-PD power supply. It is called TUSB422. It has a built in PD controller and the output voltage can be set via I2C. But the package is 0.4mm BGA pitch. In our productline we can not handle such a component. Does anyone know a "simple" CC controller IC for voltages higher than 5V which is not in a BGA package?

    Thank you already.

    Felix