5 Replies Latest reply on Mar 24, 2020 9:43 PM by RajathB_01

    CCG3PA - Rsense Bypass Capacitor - Schematic Review

    BiBr_4663101
      1. I've read in other discussions that a bypass capacitor should be placed across the Rsense resistor to reduce noise. Is a 100nf 50V MLCC cap good to use. Is there an optimum value to use?
      2. I am using two CCG3PA-3175-24pin controllers. I would like to program both controllers using the same 6 pin header. Using an external mux one controller chip is progammed at a time. VDDD_C1, SWD_IO_PRI, SWD_CLK are active first while VDDD_C2 and SWD_IO_SEC are disconnected. Once the primary is completed VDDD_C2, SWD_IO_SEC, SWD_CLK are active and VDD_C1 and SWD_IO_PRI and disconnected. SWD_CLK is all the time running to both chips. If the chip that isn't being powered is receiving SWD_CLK will that load the clock line down or cause other issues I'm not aware. If this is ok to program this way, once programming is completed is this shared GPIO P0.1 connection between the controller chip usable.  We would like to use this shared connection as a way for the two controllers to signal a status.
      3. Is it possible to email my schematic directly to someone for review?
      4. Are pull-up resistors required on the I2C liines. Can they be enabled internal to the controller chip?