VHB75W-Q24-S48 CUI Inc, VHB75W-Q24-S48 Datasheet - Page 6

• Manufacturer Part Number: VHB75W-Q24-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-Q24-S48

• Voltage - Input (min): 9V
• Voltage - Input (max): 36V
• 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: 82%
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 102-2245

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 [phone] 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 [phone]
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
,