Follow these general guidelines
when designing the power supply:
- The port-side supply, VDD1, must be 3.3-V (typical) and must meet
the recommended operating conditions outlined in Section 7.3 in terms of DC voltage, AC noise, and start-up ramp time. If using the
FPC402 to control a power switch to enable or disable power to the
front-port connectors, the FPC402 must be connected to 3.3-V power on the
input side of the switch.
- The host-side supply, VDD2, must be 1.8 V to 3.3 V (typical) and
must meet the recommended operating conditions outlined in Section 7.3 in terms of DC voltage, AC noise, and start-up ramp time.
- The maximum current draw for the FPC402 is provided in Section 7.5. This figure can be used to calculate the maximum current the supply must
provide.
- The FPC402 does not require any special power supply filtering
(that is, ferrite bead), provided the recommended operating conditions are
met. Only standard decoupling is required. See Section 6 for details concerning the recommended supply decoupling for each
pin.