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Semiconductor Components Industries, LLC, 2011
December, 2011 − Rev. 0
1 Publication Order Number:
EVBUM2028/D
NCP1081SPCGEVB
Compact, high efficiency,
30W Reference platform
with the NCP1081
Evaluation Board
User's Manual
Board Details
The NCP1081SPCGEVB implements a PoE power
splitter that converts the voltage on the Ethernet cable to a
lower voltage. The board is equipped with 2 RJ45
connectors, one connector serves as the data and power input
and the other connector is the data output. Ethernet data is
untouched by the board and simply forwarded.
Warnings
Close to the switching MOSFET voltages on the board
may exceed 200 V (@250 kHz). Temperature of board and
its components may exceed 85C during normal operation.
The Evaluation board was designed to operate correctly
under these conditions.
The input voltage should never exceed 57 V nor should
the evaluation board be loaded with loads higher than the
specified 30 W. Exceeding the specified input and output
values could permanently damage the board.
Figure 1. Front Side of EVB
Figure 2. Back Side of EVB
Table 1. EVALUATION BOARD SPECIFICATIONS
Characteristic Min Typ Max Unit
Input Voltage, PoE Input 36 − 57 V
Output Voltage − 12 − V
Output Current − − 2.5 A
Oscillator Frequency − 250 − kHz
Output Ripple − − 170 mV
Efficiency − − 88 %
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EVAL BOARD USER’S MANUAL
