DAK-16A Power Integrations, DAK-16A Datasheet - Page 23

• Manufacturer Part Number: DAK-16A
• Description: KIT DESIGN ACCELERATOR ADAPTER
• Manufacturer: Power Integrations
• Series: LinkSwitch®r

Specifications of DAK-16A

• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 1, Isolated
• Power - Output: 2.75W
• Voltage - Output: 5.5V
• Current - Output: 500mA
• Voltage - Input: 85 ~ 265VAC
• Regulator Topology: Flyback
• Frequency - Switching: 42kHz
• Board Type: Bare (Unpopulated)
• Utilized Ic / Part: LNK500, LNK501, LNK520
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 596-1001

17-May-04
9.5 Thermal Measurements
Figure 23 shows two thermal image photographs with a visual photograph as a
reference.
components were LinkSwitch and the output diode, reaching 47 °C with an external
ambient of 22 °C.
When in the case, the internal ambient was measured by inserting a thermocouple into
the case (just visible in the lower image). Running the unit for 12 hours at 85 VAC input
and peak power output, the maximum internal ambient was 37 °C. This is confirmed by
the lower thermal image, which recorded a similar case temperature.
This additional 13 °C rise gives a device and diode temperature of 60 °C at 22 °C
ambient and 75 °C at 50 °C ambient, both very acceptable results.
Page 23 of 36
Figure 23 - Thermal Image Measurements of Board and Sealed Adapter, 85 VAC Input,
Thermocouple
inserted into
case above
LinkSwitch
LinkSwitch
Output Diode
LinkSwitch
Output Diode
With the board in free air, the first thermal image shows the hottest
5.3 V, 500 mA Output, 22 °C External Ambient
EPR-16 – LinkSwitch 2.75 W Charger/Adapter
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Power Integrations
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