DAK-68A: Eval Board +Kit, PoE, 3.3V @ 2A

Summary

Design Accelerator Kits (DAK) provide all of the essential materials to get you started on your next switch mode power supply design. The kits include a fully assembled and tested prototype power supply board, comprehensive engineering report, product samples, unpopulated circuit board, data sheet and other related documentation.

This engineering report describes a 3.3 V / 2 A (6.6 W) DC-DC converter that is based on a DPA423G device. This design is intended as an evaluation platform for DPA-Switch devices in the low cost surface-mount DIP package. High operating efficiency, low parts count, small footprint and low height make this an ideal choice for Power over Ethernet (PoE) and VoIP DC-DC converter applications.

This report contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit board layout, and performance data.

Specifications

Manufacturer	Power Integrations
Category	Power Management
Sub-Category	POE - Power Over Ethernet
Eval Board Part Number	596-1007-ND
Eval Board Supplier	Power Integrations
Eval Board	Board not Stocked
Compliance	IEEE 802.3af (802.3at Type 1)
Outputs and Type	1 Isolated
Voltage Out	3.3 V
Current Out	2 A
Voltage In	36 ~ 57 V
Efficiency @ Conditions	>79%, 48V in, 3.3V @ 2 A >76%, 36 ~ 48V in, 3.3V @ 750 mA ~ 2 A
Internal Switch	Yes
Features	Current Limit (Adj. or Fixed) Over Current Protection Over Voltage Protection Shutdown, Enable, Standby Synchronizable Thermal Protection Under Voltage Protection, Brown-Out Zero Load Regulation
Switching Frequency	400 kHz
Component Count + Extras	37 + 4
Application / Target Market	PoE, Power Over Ethernet
Design Author	Power Integrations
Main I.C. Base Part	DPA423
Date Created By Author
Date Added To Library	2011-03