Layout Recommendation:

Use the following general guidelines when designing

printed circuit boards. An example of the typical

land pattern for a TDFN PI2003 and SO-8/PowerPak

MOSFET is shown in Figure 14:

•

It is best to connect the gate of the MOSFET to

the GATE pin of the controller with a short and

wide trace.

•

Connections from the SP and SN pins to the

MOSFET source and drain pins respectively

should be as short as possible

•

The VC bypass capacitor (C1 and C2) should be

located as close as possible to the VC and GND

pins.

Place the PI2003 and VC bypass

capacitor on the same layer of the board.

•

Connect all MOSFET source pins together with

a wide trace to reduce trace parasitics and to

accommodate the high current input. Similarly,

connect all MOSFET Drain pins together with a

wide trace to accommodate the high current

output.

Figure 14:

PI2003 and MOSFET layout example

Figure 15:

PI2003 Mounted on

PI2003-EVAL1

Figure 16:

PI2003-EVAL1 performance under an input short

Picor Corporation • picorpower.com

PI2003

Rev 1.0