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TPS543C20A: TPS543C20ARVFR synchronization function

Rock Shao
Expert 2995 points
Part Number: TPS543C20A


Hi Team,

The customer planning to re-layout the next version, how to realize the synchronization function of pin 35? Is pin 35 of the two groups directly connected together

Hopes to synchronize the functions:

1. 5v is master, 3.3v is slave
2. Can 5v/3.3v be set as phase staggered

Regards and thanks.

  • 0
    TI__Mastermind 32400 points

    Hello Rock, 

    thank you for posting the question. 

    If I understand well the question. The right configuration is to set the RT of the master to whatever frequency you need it to be. Then connect SYNC of both Master and Slave together. This will allow the master to set the frequency (with RT resistor to GND) and will be passed to the slave thru the SYNC connection. 

    Thanks 

    Tahar