RDK-249 Power Integrations, RDK-249 Datasheet - Page 41

• Manufacturer Part Number: RDK-249
• Description: KIT REF DESIGN PFS762HG
• Manufacturer: Power Integrations
• Series: HiperTFS®r

Specifications of RDK-249

• Main Purpose: Reference Design, PC Power Supply
• Embedded: No
• Utilized Ic / Part: TFS762HG
• Primary Attributes: 12V 25A, 5V 2.9A Outputs, 300 ~ 385 VDC Input
• Output Voltage: 5 V
• Input / Supply Voltage (max): 385 VDC
• Input / Supply Voltage (min): 300 VDC
• Duty Cycle (max): 50 %
• Mounting Style: Through Hole
• Output Current: 2.9 A
• Output Power: 14.5 W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Other names: 596-1398

Figure 36 – Standby Output Short-Circuit.
Figure 38 – Main Output Short-Circuit.
09-Nov-10
13.9 Main and Standby Full Power Output Short-Circuit
For short-circuit testing the recommended procedure is to use MOSFETs like IXYS
IXFN180N25T or equivalent devices with high current capability connected to both Main
and Standby outputs. In Short-Circuit mode only the output connectors and cable wires
will have any significant resistivity. The unit will withstand short-circuit conditions without
any permanent damage, and the outputs will go back to normal after the fault condition is
removed. The Standby controller will try a restart cycle any time when the restart
conditions are satisfied.
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Upper: V
Lower: Standby I
Upper: V
Lower: Main I
STBY
MAIN
, 1 V / div.
, 2 V / div.
DRAIN
DRAIN
, 750 mA, 50 s / div.
, 200 mA, 50 s / div.
Figure 37 – Standby Output Short-Circuit.
RDR-249 5 V Standby and Single 12 V Main
Figure 39 – Main Output Short-Circuit.
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Upper: V
Lower: Main I
Upper: V
Lower: Standby I
MAIN
STBY
Power Integrations
www.powerint.com
, 2 V / div.
, 1 V / div.
DRAIN
DRAIN
, 750 mA, 100 ms / div.
, 200 mA, 100 ms / div.