dw025 Lineage Power, dw025 Datasheet - Page 10

• Manufacturer Part Number: dw025
• Description: Dw025 Dual Output-series Power Modules Dc-dc Converters
• Manufacturer: Lineage Power

DW025 Dual Output-Series Power Modules: dc-dc Converters;
36 Vdc to 75 Vdc Input; Dual Outputs; 25 W
Test Configurations
A. Pinout A (DW025AJ-M, BK-M, CL-M) Configura-
B. Pinout B (DW025AA-M, AB-M, AF-M, BB-M,
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10
Note: Use a 0.1 µF ceramic capacitor. Scope measurement should
Figure 12. Output Noise Measurement Test Setup
tion
CC-M) Configuration
COMM
V
V
V
V
V
V
be made by using a BNC socket. Position the load between
50 mm (2 in.) and 75 mm (3 in.) from the module.
O1
O2
O1
O2
O1
O2
(+)
(–)
(+)
(+)
(–)
(–)
COPPER STRIP
COPPER STRIP
0.1 µF
0.1 µF
0.1 µF
0.1 µF
(continued)
SCOPE
SCOPE
SCOPE
SCOPE
R
R
R
R
LOAD1
LOAD2
8-808(C)
8-809(C)
LOAD1
LOAD2
Figure 13. Output Voltage and Efficiency Measure-
Design Considerations
Input Source Impedance
The power module should be connected to a low ac-
impedance input source. Highly inductive source
impedances can affect the stability of the power mod-
ule. A 33 µF electrolytic capacitor (ESR < 0.7
100 kHz) mounted close to the power module helps
ensure stability of the unit.
Note: All measurements are taken at the module terminals. When
Pinout A
Pinout B
SUPPLY
RESISTANCE
CONTACT
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
In addition, V
I
ment Test Setup
I
I
(–) is internally connected to case.
=
=
J
------------------------------------------------------------- - x
V
V
I
I
=
2
(–)
(+)
J
------------------------------------------------- - x
1
2
=
1
V
V
V
I
COM
I
OJ
V
V
V
+
+
O1
O2
OJ
+
–
–
–
V
–
V
COM
I
I
DISTRIBUTION LOSSES
V
–
–
I
OJ
O
CONTACT AND
I
I
–
I
Data Sheet
I
I
April 2008
OJ
Lineage Power
I
OJ
100
at
LOAD
LOAD
8-753(C)
100