VHB75W-Q48-S48 CUI Inc, VHB75W-Q48-S48 Datasheet - Page 4
![CONVERTER DC/DC 75W 48V 1.56A](/photos/40/8/400870/mfg_vhb75w-dual_series_sml.jpg)
VHB75W-Q48-S48
Manufacturer Part Number
VHB75W-Q48-S48
Description
CONVERTER DC/DC 75W 48V 1.56A
Manufacturer
CUI Inc
Series
V-Infinity VHB75Wr
Type
With Remote On/Off and UVLOr
Datasheet
1.VHB75W-Q48-S48.pdf
(6 pages)
Specifications of VHB75W-Q48-S48
Voltage - Input (min)
18V
Voltage - Input (max)
75V
Number Of Outputs
1
Power (watts) - Manufacture Series
75W
Power (watts) - Max
75W
1st Output
48 VDC @ 1.56A
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
84%
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
102-2246
PART NUMBER: VHB75
2. 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 (VHB75-Q48-S5) by 8% to 5.4V, R
Table 1. For example, to trim-up the output voltage of 5.0V
Table 1
Where: R
nominal output voltage. V
R
R
1
trim-up
and R
20050 SW 112
FIGURE 3: TRIM-UP VOLTAGE SETUP
trim-up
FIGURE 2. TRIMMING WITH
EXTERNAL POTENTIOMETER
R
The value of R
2
trim-up
are internal to the unit and are defined in
+Vin
-Vin
=
is the external resistor in K Ω . V
V - V
o
2.5V
3.3V
12V
15V
24V
5V
R1 - R2 x (V - V
=
o, nom = 5.4 - 5.0 = 0.4 V
th
Trim-Up
5.8 - 8.25 x 0.4
as follows:
R1 = 5.8 KΩ
R2 = 8.25 KΩ
Ave. Tualatin, Oregon 97062
o
trim-up
V - V
is the desired output voltage.
0.4
o
Trim
+Vo
-Vo
+S
19.656
25.474
42.215
-S
3.168
2.877
5.8
is defined as:
o, nom
o
Ω
= 6.25 (KΩ)
o, nom
13.304
16.923
trim-up
14.76
8.25
8.25
7.2
R trim-up
Ω
is calculated
o,nom
+Vin
-Vin
)
(KΩ)
is the
R load
phone
phone 503.612.2300 fax
Trim
+Vo
DESCRIPTION: dc-dc converter
-Vo
+S
-S
module (VHB75-Q48-S5) by 8% to 4.6V, R
Where: R
Table 2. For example, to trim-up the output voltage of 5.0V
Table 2
R
nominal output voltage. V
trim-down
R
1
andR
FIGURE 4: TRIM-DOWN VOLTAGE SETUP
trim-down
10KΩ
Trimpot
R
The value of R
trim-down
2
are internal to the unit and are defined in
+Vin
-Vin
fax 503.612.2382
V
=
is the external resistor in K Ω . V
o, nom
2.5V
3.3V
12V
15V
24V
5V
=
Trim-Down
R load
R1 - R2 x (V
- V
R1 = 5.8 KΩ
R2 = 10.57 KΩ
as follows:
5.8 - 10.57 x 0.4
o
trim-down
o
= 5.0 - 4.6 = 0.4 V
Trim
is the desired output voltage.
V
+Vo
-Vo
0.4
o, nom
+S
-S
86.45
2.923
6.18
150
430
5.8
is defined as:
Ω
o, nom
= 3.93 (KΩ)
- V
trim-down
rev.
page
date
10.57
10.57
60.1
130
15
94
o
R trim-down
Ω
- V )
05/2009
is calculated
o,nom
4 of 6
o
(KΩ)
is the
R load