RDK-201 Power Integrations, RDK-201 Datasheet - Page 21

• Manufacturer Part Number: RDK-201
• Description: KIT REF DESIGN LINKSWITCH-CV
• Manufacturer: Power Integrations
• Series: LinkSwitch®-CVr
• Type: MOSFET & Power Driverr

Specifications of RDK-201

• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 1, Isolated
• Power - Output: 6W
• Voltage - Output: 5V
• Current - Output: 1.2A
• Voltage - Input: 90 ~ 265VAC
• Regulator Topology: Flyback
• Board Type: Fully Populated
• Utilized Ic / Part: LNK626
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: LNK62x
• Other names: 596-1266

11-Nov-08
10 Thermal Performance
The temperature of key components was measured to evaluate the thermal performance
of the power supply. The power supply’s thermal performance was measured at both low
line (90 VAC) and high line (265 VAC) with line frequency of 50 Hz. The power supply
was loaded to full load (1200 mA).
The power supply was placed inside a cardboard box, to minimize convective cooling,
which was then placed in a thermal chamber. The ambient temperature within the box
was monitored by a T-type thermocouple placed above the power supply. The
temperature of the Power Integrations device, U1, was monitored by soldering a T-type
thermocouple to one of the middle source pins, close to the case. The temperature of the
transformer windings (T1) was monitored by gluing a T-type thermocouple, using
thermally conductive epoxy, to the outermost layer of tape on the bottom of the
transformer (closest to the PCB). Lastly the output diode’s (D7) temperature was
monitored by soldering a T-type thermocouple to the anode, near the case.
Page 21 of 32
Ambient
Source Pin of PI Device (U1)
Transformer Windings (T1)
Anode of Output Diode (D7)
Table 2 – Thermal Performance of the Power Supply.
Item
90 VAC / 50
Tel: [phone] Fax: [phone]
Hz
40
87
70
76
RDR-201 6 W LinkSwitch-CV Adapter
Temperature (° ° ° ° C)
265 VAC / 50
Hz
40
69
67
76
Power Integrations
www.powerint.com