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TINA/Spice/TPS2410: Clarification on component labeled TB1, TB2 in schematic

Part Number: TPS2410
Other Parts Discussed in Thread: TINA-TI

Tool/software: TINA-TI or Spice Models

Hello,

I am currently trying to replicate this schematic for use in a real world application. However, there is a component labeled TB1 and I do not know what it is referring to. Online resources suggest that TB refers to Terminal Board but those words do not appear within the document. Some clarification would be very helpful as to what this label may be referring to. The paper and schematic are linked below

http://www.ti.com/lit/an/slua550/slua550.pdf