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TPA3116D2: FUNCTIONAL BLOCK PROBLEM?

Part Number: TPA3116D2

Hello, In order to better understanding of the TPA3116D2 functional block. I would like to ask why there isn't the pin 1 (MODSEL) on the functional block. And also, why is GAIN pin seems duplicated?.

On the other hand, and just for my curiosity: the functional block shows 4 power mosfets GNDs going out the block, and also shows that they're not internally connected... and in the chip there're 3 GNDs pins on the outputs side. So, what happened here?

Thanks in advance,

  • Hi Andres

       The MODSEL pin could considered sent into PWM Logic block, to control different PWM behavior.

       The Gain/SLV pin affect both of the position. One is the analog amplify Gain. Another is Master/Slave selection, and in Slave mode, would work together with SYNC pin to control Ramp Generator's phase.

    the functional block shows 4 power mosfets GNDs going out the block, and also shows that they're not internally connected

       They are internally connected, maybe drawn this way would makes too many cross line in the picture.