DAK-68A Power Integrations, DAK-68A Datasheet - Page 7

• Manufacturer Part Number: DAK-68A
• Description: KIT DESIGN ACCELERATOR POE CONV
• Manufacturer: Power Integrations
• Series: DPA-Switch®r

Specifications of DAK-68A

• Main Purpose: Special Purpose DC/DC, Power Over Ethernet
• Outputs And Type: 1, Non-Isolated
• Power - Output: 6.6W
• Voltage - Output: 3.3V
• Current - Output: 2A
• Voltage - Input: 36 ~ 57V
• Regulator Topology: Flyback
• Frequency - Switching: 400kHz
• Board Type: Bare (Unpopulated) and Fully Populated
• Utilized Ic / Part: DPA423, DPA424, DPA425
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 596-1007

19-Jul-2005
EP68 3.3 V, 2 A DC-DC Power Supply
4.3 Output Feedback
The output voltage is sensed via the resistor divider formed by R12 and R13 and fed into
the reference pin of the low voltage reference, U3. Feedback compensation components
R10, R11, and C13 ensure stable operation and optimum line and load transient
response. Capacitor C12 provides a soft-finish characteristic, preventing output voltage
overshoot during startup of the converter.
5 PCB Layout
Figure 3 - Top Side, SMT Printed Circuit Layout (Top View).
Figure 4 - Bottom Side, SMT Printed Circuit Layout (Top View).
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