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TPS62873-Q1: TPS62873-Q1 parallel issue

Hale Tan
Intellectual 2860 points
Part Number: TPS62873-Q1

Hi team,

There are 2 questions about the TPS62873-Q1 parallel as below.

1. In recommended circuit why is the SYN_OUT of U1 not attached to the 47K drop down, but the SYN_OUT of other device are attached the 47K drop down?
2.Is the 4 chip VOSNS using the same network to load power, GOSNS using the same network to load ground?

  • 0
    TI__Genius 14290 points

    Hi Hale Tan,

    47kOhm resistor need on sync out pin to recognize the device is secondary device and behave accordingly.  All secondary devices need 47kOhm resistor.  In schematic, U1 is primary device and don't require additional 47kOhm resistor. 

    Yes, all sense line are shorted for all parts in stack operation and it is recommended to connect to the load point.

    Let me know if you need more information on stack operation. Can you also share application where you plan to use it? 

    Best regards,

    Tanvee