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TPS543B20: Design Queries

Shifali N
Expert 2165 points
Part Number: TPS543B20

Hi Team,

I am using TPS543B20RVFT in my design in a stacked configuration for Iout=50A.  TPS543B20RVFT is used to generate 0.85V and 1.35V respectively. I have below queries regarding the design of the IC.

1. Section 9.2.2.3 in datasheet explains Inductor calculation which has a parameter maximum output current Iout. What value should be considered for Iout in a stacked configuration. 25A or 50A.

2. How VSEL, SS, RT, Mode and RAMP of slave device connected? Whether it should be left floating

Regards,

Shifali N