ADP3418

Rev. B | Page 12 of 16

PC BOARD LAYOUT CONSIDERATIONS

Use the following general guidelines when designing printed

circuit boards.

•

Trace out the high current paths and use short, wide

(>20 mil) traces to make these connections.

•

Connect the PGND pin of the ADP3418 as closely as

possible to the source of the lower MOSFET.

•

possible to the VCC and PGND pins.

•

Use vias to other layers when possible to maximize thermal

conduction away from the IC.

The circuit in Figure 15 shows how four drivers can be

combined with the ADP3188 to form a total power conversion

10.x compliant.

Figure 14 shows an example of the typical land patterns based

on the guidelines given previously. For more detailed layout

guidelines for a complete CPU voltage regulator subsystem,

refer to the ADP3188 data sheet.

D1

Figure 14. External Component Placement Example for the ADP3418 Driver