AN3387 Datasheet, PDF (1/12 Pages) STMicroelectronics – This short document gives some practical indications

AN3387
Application Note
PM8803 layout guidelines
Introduction
This short document gives some practical indications for an optimal layout of a PoE
converter based on the PM8803 PD + PWM controller; the focus is on the basic routing
rules applicable for the device in this specific application. It is assumed that the user knows
the power and EMI best practice guidelines for a DC-DC converter.
The EVALPM8803-FLY demonstration board layout is used as a practical example.
A suggested footprint for the HTSSOP20 package with exposed pad is also described.
Figure 1. Closed view of the PM8803 on EVALPM8803-FLY
May 2011
Doc ID 018735 Rev 1
".W
1/12
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