DPA423 Power Integrations, Inc., DPA423 Datasheet - Page 29

• Manufacturer Part Number: DPA423
• Description: Highly Integrated DC-DC Converter Ics For Distributed Power Architecturesthe Dpa-switch ic Family Introduces a Highly Integratedsolution For DC-DC Conversion Applications in The 16-75 Vdcinput Range.dpa-switch Uses The Same Proven Topology as Topswit
• Manufacturer: Power Integrations, Inc.

Typical Performance Characteristics (cont.)
Figure 43. Max. Duty Cycle Reduction Onset Threshold
Figure 41. EXTERNAL CURRENT LIMIT Pin Voltage
EXTERNAL CURRENT LIMIT Pin Current (µA)
Figure 45. Remote OFF DRAIN Supply Current
1.2
1.0
0.8
0.6
0.4
0.2
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
1.2
1.0
0.8
0.6
0.4
0.2
-250
0
0
-50 -25
-50 -20
Current vs. Temperature.
-225
vs. Current.
V
-200 µA
X
Junction Temperature (°C)
Junction Temperature (°C)
vs. Temperature.
-200
= 1.375 - I
0
0
-175
≤
I
X
-150
25
25
≤
X
-25 µA
x 843 kΩ
-125
50
50
-100
75 100 125 150
75 100 125 150
-75
-50
-25
0
Figure 46 Breakdown Voltage vs. Temperature.
Figure 44. I
Figure 42. CONTROL Pin Current at Minimum Duty
1.2
1.0
0.8
0.6
0.4
0.2
1.1
1.0
0.9
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
0
1.0
0.5
0.0
-50 -25
-50 -25
0
V
C
= 5 V
Cycle vs. Temperature.
Junction Temperature (°C)
Junction Temperature (°C)
C
10
vs. DRAIN Voltage.
0
DRAIN Voltage (V)
0
20
25
25
50
30
50
75 100 125 150
75 100 125 150
40
DPA423-426
50
60
4/04
L
29