LM5072EVAL National Semiconductor, LM5072EVAL Datasheet - Page 11

• Manufacturer Part Number: LM5072EVAL
• Description: BOARD EVALUATION LM5072
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM5072EVAL

• Main Purpose: Special Purpose DC/DC, Power Over Ethernet
• Outputs And Type: 1, Isolated
• Power - Output: 9.9W
• Voltage - Output: 3.3V
• Current - Output: 3A
• Voltage - Input: 38 ~ 60V
• Regulator Topology: Flyback
• Frequency - Switching: 250kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM5072
• Lead Free Status / RoHS Status: Not applicable / Not applicable

Reconfiguration of the Evaluation
Board for Non-Isolated Output
For applications where output isolation is not required, the
non-isolated version of the evaluation board can be used to
reduce the BOM cost. Reconfiguration of the circuit board to
the non-isolated version can be accomplished in the follow-
ing four steps:
1. Delete the unused parts from the circuit board as well as
the BOM: C20, C22, C25, C28, R7, R11, R16, R17, R24,
U2 and U3.
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2. Connect test points P5 and P6 with a bus wire of AWG
3. Short C28 pads by installing a 0Ω resistor of R2010 size,
4. Change C30 to 3.3 nF, C31 to 1.0 nF and R20 to 10 kΩ.
Figure 16 shows the schematic for non-isolated circuit with a
single 3.3V output. Similar changes also apply to the dual
output version.
26.
or by soldering a piece of AWG 26 bus wire.
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