VHB150W-Q48-S24 CUI Inc, VHB150W-Q48-S24 Datasheet - Page 4

• Manufacturer Part Number: VHB150W-Q48-S24
• Description: CONVERTER DC/DC 150W 24V 6.5A
• Manufacturer: CUI Inc
• Series: V-Infinity VHB150Wr
• Type: With Remote On/Off and UVLOr

Specifications of VHB150W-Q48-S24

• Voltage - Input (min): 18V
• Voltage - Input (max): 75V
• Number Of Outputs: 1
• Power (watts) - Manufacture Series: 150W
• Power (watts) - Max: 150W
• 1st Output: 24 VDC @ 6.5A
• 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 0.52" H (61mm x 57.9mm x 13.2mm)
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 89%
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 102-2264; VHB150W-Q48-S24

PART NUMBER: VHK150W
APPLICATION NOTES
1. OUTPUT DE-RATING
The operating ambient temperature range for VHK150W is -40 ~ +85°C, with the actual output power subject to the following
de-rating curves at free-air convection and at forced air conditions. To ensure long-term reliability, it is important to ensure proper
cooling at the worst operating conditions. Please note the derating curves may improve if the converter is mounted on a metal
surface to allow heat conduction.
2. INPUT VOLTAGE RANGE
It is important to ensure the input voltage measured at the converter input pins is within the range for that converter. Make sure wire
losses and voltage ripples are accounted for. One possible problem is driving the converter with a linear unregulated power supply.
For example, if the average voltage measured by a DMM is 9V, with a voltage ripple of 3Vpp, the actual input can swing from 7.5V to
10.5V. This will be outside the specified input range of 10-36V and the converter may not function properly. On the other end, make
sure the actual input voltage does not exceed the highest voltage of 36V or 75V.
3. LEAD WIRES
Make sure the input and output wires are of adequate AWG size to minimize voltage drop, and ensure the voltage across the input
terminals is above the converter's rated minimum voltage at all times. It is recommended to have the wire pairs twisted, respectively
for the input pair and the output pair, so as to minimize noise pickup.
20050 SW 112
120%
100%
80%
60%
40%
20%
0%
-40
th
Ave. Tualatin, Oregon 97062
45
VHK150W Power Derating Curves @ nominal input voltage
50
FIGURE 1. OUTPUT DERATING
55
Ambient Temperature - degrees C
phone
phone [phone] fax
60
DESCRIPTION: chassis mount dc-dc converter
65
70
fax [phone]
75
80
www.v-infinity.com
85
page
date
Natural
Convection
0.5 m/S
(100LFM)
1.0 m/S
(200LFM)
1.5 m/S
(300LFM)
2.0 m/S
(400LFM)
2.5 m/S
(500LFM)
3.0 m/S
(600LFM)
3.5 m/S
(700LFM)
08/2009
4 of 9