dpa422 Power Integrations, Inc., dpa422 Datasheet - Page 29

• Manufacturer Part Number: dpa422
• Description: Highly Integrated Dc-dc Converter Ics For Power Over Ethernet & Telecom Applications
• Manufacturer: Power Integrations, Inc.

Typical Performance Characteristics (cont.)
www.powerint.com
Figure 44. Max. Duty Cycle Reduction Onset Threshold
Figure 46. Remote OFF DRAIN Supply Current vs. Temperature.
EXTERNAL CURRENT LIMIT Pin Current (μA)
Figure 42. EXTERNAL CURRENT LIMIT Pin Voltage vs. Current
1.2
1.0
0.8
0.6
0.4
0.2
0
1.2
1.0
0.8
0.6
0.4
0.2
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
-50 -25
-50 -20
-250
0
Current vs. Temperature.
-225
V
-200 μA
Junction Temperature (°C)
Junction Temperature (°C)
X
-200
= 1.375 - ⏐I
0
0
-175
≤
I
X
25
25
-150
≤
X
-25 μA
⏐x 843 kΩ
-125
50
50
-100
75 100 125 150
75 100 125 150
-75
-50
-25
0
Figure 47. Breakdown Voltage vs. Temperature.
Figure 43. CONTROL Pin Current at Minimum Duty
Figure 45. I
1.1
1.0
0.9
1.2
1.0
0.8
0.6
0.4
0.2
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
-50 -25
-50 -25
0
Cycle vs. Temperature.
V
C
C
vs. DRAIN Voltage.
Junction Temperature (°C)
= 5 V
Junction Temperature (°C)
10
0
DRAIN Voltage (V)
0
20
25
25
50
30
50
DPA422-426
75 100 125 150
75 100 125 150
40
50
60
Rev. S 12/07
29