DAK-21A Power Integrations, DAK-21A Datasheet - Page 20

• Manufacturer Part Number: DAK-21A
• Description: KIT DESIGN ACCELERATOR DPA SW
• Manufacturer: Power Integrations
• Series: DPA-Switch®r

Specifications of DAK-21A

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Isolated
• Voltage - Output: 5V
• Current - Output: 6A
• Voltage - Input: 36 ~ 72V
• Regulator Topology: Buck
• Frequency - Switching: 400kHz
• Board Type: Fully Populated
• Utilized Ic / Part: DPA423, DPA424, DPA425, DPA426
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

35
30
25
20
15
10
5
0
Power Integrations, Inc.
Tel: [phone] Fax: [phone]
www.powerint.com
0
Figure 15 – EP-21 Thermal Performance, No Heat Sink, Maximum Load, Ambient
Input Voltage
Item
Ambient
DPA-Switch (U1)
Transformer (T1)
Output Choke (L2)
Output Rectifier (D2)
Base Plate
20
Figure 16 – EP-21 Output Power Thermal Derating.
(115
Temperature Adjusted for 110 C, Base Plate Temperature.
o
C Maximum Baseplate, V
40
EP-21 Thermal Derating
Ambient Temperature (
114.5 C
36 VDC
114 C
110 C
114 C
110 C
57 C
60
48 VDC
113 C
115 C
112 C
115 C
110 C
61 C
IN
o
C)
= 48 V)
80
72 VDC
113 C
116 C
115 C
117 C
110 C
69 C
100
No heat sink
With heat sink
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