Hello,
May I ask your advice on the connection for decoupling capacitors in TIDA-00901. In this design reference, three de-coupling capacitors C1, C2, and C3 are connected from PVDD to ground. I am wondering whether it would be better to connect these three capacitors from PVDD to SL_A/SL_B/SL_C. Since the purpose of these de-coupling capacitors is to attenuate high frequency currents caused by switching from the MOSFETs and other parasitic capacitances, it would be better to de-coupling the inductance from the connection traces 1) to drain pin of the high-side MOSFET, 2) between the source pin of the high-side MOSFET and drain pin of the low-side MOSFET, and 3) between course pin of the low-side MOSFET and SL_A/SL_B/SL_C. Connecting CA/C2/C3 to SL_A/SL_B/SL_C makes the de-coupling loop shorter, which is ideal. Current connection from PVDD to ground has much longer loop due to the low-side shunt. I am wondering whether there is any simulations being done in comparing these two connections.
Thanks and I look forward to hearing from you,
John
