CMLV12S28-150 Wall Industries,Inc., CMLV12S28-150 Datasheet - Page 5

• Manufacturer Part Number: CMLV12S28-150
• Description: Low Voltage Dc-dc Chassis Mount Converter 10-36 Vdc Input 28vdc Output At 5.36a Half-brick Package
• Manufacturer: Wall Industries,Inc.

Output Voltage Trim: (24V, 26V, and 28V Models)
The output is adjustable ±10% of rated output voltage. To trim the output voltage up, place the trim resistor
between the Trim and –Rs pins (Figure 4). To trim the output voltage down, place the trim resistor between the
Trim and +Rs pins (Figure 3).
The value of the trim resistor with respect to the desired output voltage (Vo) can be derived from the following
formulas or looked up on the trim table (Table 2).
(888) 597-WALL
Table 2: Trim Equations for CMLV Series (24V, 26V, and 28V Models)
Percent
Vonom
28.000
Trim
10%
1%
2%
3%
4%
5%
6%
7%
8%
9%
Figure 3: Trim Down
Pins Facing Down
27.720 2101.52 28.280 254.39 All in Kohms
27.440 1091.41 28.560 115.10
27.160 729.95
26.880 544.19
26.600 431.08
26.320 354.96
26.040 300.24
25.760 259.00
25.480 226.82
25.200 201.00
2.495
Vref
Vo
Trim Low
26.10
RTL
RH
RTH
RTL
+V
Trim
-V
28.840
29.120
29.400
29.680
29.960
30.240
30.520
30.800
+Rs
-Rs
2.55
RL
Vo
out
out
Trim High


V
V
R
ref
o
L
V
72.35
51.61
39.35
31.27
25.53
21.24
17.92
15.28

R
Rlim RTH to -Rs
RTH
8.25 RTL to +Rs

o
H
V

V
V
ref
RTL
ref
V
o

R
ref

www.wallindustries.com
H
V
V
R
ref
ref
L
Rev. A

R

load
R
R
lim
lim
Note that while decreasing the output voltage, the
maximum output current still remains at 5.36A, and
while increasing the output voltage, the output current
is reduced to maintain a total output power at 150 W.
Figure 4: Trim Up
Pins Facing Down
(in Kohms)
(in Kohms)
TECHNICAL DATASHEET
+V
Trim
-V
+Rs
-Rs
CMLV12S28-150
out
out
RTH
R
Page 5 of 12
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