VHB75W-Q48-S15 CUI Inc, VHB75W-Q48-S15 Datasheet - Page 6
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VHB75W-Q48-S15
Manufacturer Part Number
VHB75W-Q48-S15
Description
CONVERTER DC/DC 75W 15V 5A
Manufacturer
CUI Inc
Series
V-Infinity VHB75Wr
Type
With Remote On/Off and UVLOr
Datasheet
1.VHB75W-Q48-S15.pdf
(10 pages)
Specifications of VHB75W-Q48-S15
Voltage - Input (min)
18V
Voltage - Input (max)
75V
Number Of Outputs
1
Power (watts) - Manufacture Series
75W
Power (watts) - Max
75W
1st Output
15 VDC @ 5A
2nd Output
-
3rd Output
-
Voltage - Isolation
1.5kV (1500V)
Mounting Type
Through Hole
Package / Case
9-DIP Module, 1/2 Brick
Size / Dimension
2.40" L x 2.28" W x 0.50" H (61mm x 57.9mm x 12.7mm)
Operating Temperature
-40°C ~ 100°C
Efficiency
85%
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
102-2255
VHB75W-Q48-S15
VHB75W-Q48-S15
PART NUMBER: VHB75W
7. OUTPUT TRIMMING (OPTIONAL)
The output voltages are preset to nominal values as indicated by the models table at the factory. If desired, the output voltage may
optionally be trimmed to a different value (+/- 10%) with external resistors and/or potentiometer as shown below.
To trim the output voltage with fixed resistors, the output voltage can be calculated as follows.
module (VHB75W-Q48-S5) by 8% to 5.4V, R
nominal output voltage. V
R
Table 1. For example, to trim-up the output voltage of 5.0V
Table 1
Where: R
2
, R
R
20050 SW 112
trim-up
3
, V
r
, and V
FIGURE 4: TRIM-UP VOLTAGE SETUP
trim-up
FIGURE 3. TRIMMING WITH
EXTERNAL POTENTIOMETER
The value of R
R
+Vin
-Vin
=
trim-up
is the external resistor in K Ω . V
f
are internal to the unit and are defined in
V - V
o
th
3.3V
12V
15V
24V
48V
5V
R1 - R2 x (V - V
=
Ave. Tualatin, Oregon 97062
o, nom = 5.4 - 5.0 = 0.4 V
Trim-Up
as follows:
o
5.8 - 8.2 x 0.4
R1 = 5.8 KΩ
R2 = 8.2 KΩ
is the desired output voltage. R
trim-up
V - V
o
Trim
0.4
+Vo
-Vo
19.656
25.474
74.514
3.168
42.33
5.8
is defined as:
o, nom
Ω
o
= 6.3 (KΩ)
13.0476
13.304
14.76
16.67
o, nom
7.2
8.2
trim-up
Ω
R trim-up
o,nom
+Vin
-Vin
)
is calculated
(KΩ)
is the
phone
phone 503.612.2300 fax
R load
1
,
Trim
+Vo
DESCRIPTION: half-brick dc-dc converter
-Vo
+S
-S
module (VHB75W-Q48-S5) by 8% to 4.6V, R
nominal output voltage. V
Where: R
Table 1. For example, to trim-up the output voltage of 5.0V
Table 2
R
trim-down
R
2
, and V
FIGURE 5: TRIM-DOWN VOLTAGE SETUP
trim-down
10KΩ
Trimpot
The value of R
R
fax 503.612.2383
r
trim-down
+Vin
-Vin
are internal to the unit and are defined in
=
is the external resistor in K Ω . V
V
o, nom
3.3V
12V
15V
24V
48V
5V
Trim-Down
=
R load
R1 - R2 x (V
- V
as follows:
R1 = 5.8 KΩ
R2 = 10.52 KΩ
o
5.8 - 10.52 x 0.4
trim-down
o
is the desired output voltage. R
= 5.0 - 4.6 = 0.4 V
Trim
V
+Vo
-Vo
0.4
o, nom
1569.6
86.45
6.18
150
430
5.8
is defined as:
Ω
www.v-infinity.com
o, nom
= 3.98 (KΩ)
295.527
- V
10.52
60.1
120
page
date
15
94
trim-down
o
Ω
R trim-down
- V )
04/2011
o,nom
6 of 10
o
is calculated
(KΩ)
is the
R load
1
,