VHB75W-Q48-S48 CUI Inc, VHB75W-Q48-S48 Datasheet - Page 4

• 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

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 [phone] 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 [phone]
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