WPN20R REV A 3/2000Page 4
PERFORMANCE GRAPHS
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Tel: 800.547.2537 Fax: 520.770.9369
C&D Technologies, (NCL)
Milton Keynes MK14 5BU UK
Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545
Any data, prices, descriptions or specifications presented herein are subject to revision by C&D Technologies, Inc. without notice. While such information is believed to
be accurate as indicated herein, C&D Technologies, Inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or
completeness of such information. Further, because the product(s) featured herein may be used under conditions beyond its control, C&D Technologies, Inc. hereby
disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particular use or in any specific application or arising from
any course of dealing or usage of trade. The user is solely responsible for determining the suitability of the product(s) featured herein for user’s intended purpose and
in user’s specific application. C&D Technologies, Inc. does not warrant or recommend that any of its products be used in any life support or aviation or aerospace
applications.
Efficiency (%)
15V
12V
5V
3V
OUTPUT RIPPLE VS. TEMPERATURE
Normalized Output Ripple
-40 -15 25 65 110
Tcase (C)
TRIM RESISTOR VS. OUTPUT VOLTAGE CHANGE
50
45
40
35
30
25
20
15
10
5
0
1098 76 5 432 1
Percentage Change In Output Voltage
Trim Resistor (K Ohms)
5 5
3 -trim +trim
10
5
0
-5
-10
-40 -15 25 65 110
100% Load
20% Load
Tcase (C)
Change in Efficiency (%)
-10
-5
0
5
10
Change in Efficiency (%)
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
Vin
EFFICIENCY VS. INPUT VOLTAGE
LL Nom HL
50%Load
10%Load
100%Load
Percentage Change In Output Voltage
100
90
80
70
60
50
40
30
20
10
0
10 9 8 7 6 5 4 3 2 1
TRIM RESISTOR VS. OUTPUT VOLTAGE CHANGE
Trim Resistor (K Ohms)
EFFICIENCY VS. OUTPUT LOAD
90
85
80
75
70
65
60
55
50
10 20 40 50 60 80 100
Output Load (% or Rated)
1.4
1.2
1
0.8
0.6
0.4
OUTPUT RIPPLE VS. INPUT VOLTAGE
Normalized Output Ripple
Vin
LL Nom HL
12 15 15
+trim -trim trim
1.2
1
0.8
0.6
EFFICIENCY VS. TEMPERATURE
