CUI VHB75W-Q48-S24

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VHB75W Series Half Brick DC-DC Converter
Rev. 07-2007
Features
·37.5W-75W isolated output
·Efficiency to 85%
·300KHz switching frequency
·4:1 input range
·Regulated outputs
·Continuous short circuit protection
·Industry standard half-brick package
·Five-sided metal case
Model
Number
VHB75W-Q24-S3R3
VHB75W-Q24-S5
VHB75W-Q24-S12
VHB75W-Q24-S15
VHB75W-Q24-S24
VHB75W-Q48-S3R3
VHB75W-Q48-S5
VHB75W-Q48-S12
VHB75W-Q48-S15
VHB75W-Q48-S24
Input
Voltage
9-36 VDC
9-36 VDC
9-36 VDC
9-36 VDC
9-36 VDC
18-75 VDC
18-75 VDC
18-75 VDC
18-75 VDC
18-75 VDC
Output
Voltage
3.3 VDC
5 VDC
12 VDC
15 VDC
24 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
24 VDC
Output
Current
15 A
15 A
6.25 A
5A
3.12 A
15 A
15 A
6.25 A
5A
3.12 A
V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062
I nput Current
No Load
Full Load
50 mA
2611 mA
50 mA
3811 mA
50 mA
3765 mA
50 mA
3720 mA
50 mA
3720 mA
50 mA
1320 mA
50 mA
1905 mA
50 mA
1860 mA
50 mA
1860 mA
50 mA
1860 mA
www.v-infinity.com
Efficiency
79%
82%
83%
84%
84%
78%
82%
84%
84%
84%
1-866-372-1258
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VHB75W Series Half Brick DC-DC Converter
Rev. 07-2007
Input
Input Voltage Range
24V:
48V:
9-36V
18-75V
Under Voltage Lockout
24V:
power up 8.8V
power down 8V
48Vin:
power up 17V
power down 16V
ON/OFF Control
Input Filter
see notes 3&4
PI Type
Output
Voltage Accuracy
Transient Response: 25% Step Load Change
External Trim Adj. Range
Ripple & Noise
3.3V, 5V
20MHz BW
12V & 15V
±1% max.
<500µ sec.
±10%
40mV RMS., max
100mV pk-pk., max
60mV RMS., max
150mV pk-pk., max
100mV RMS., max
240mV pk-pk, max.
±0.03%/°C
Continuous
approved to UL60950-1 (E222736)
±0.2% max
±0.2% max
115-140%
110%-160% Nominal Output
24V
Temperature Coefficient
Short Circuit Protection
Safety
Line Regulation 1
Load Regulation 2
Over Voltage Protection trip Range, % Vo nom.
Current Limit
General Specifications
Efficiency
Isolation Voltage
Input/Output
see table
1500VDC min.
Input/Case
Output/Case
1500VDC min.
1500VDC min.
10 7 Ohm min.
Isolation Resistance
Switching Frequency
300KHz, Typ
Operating Case Temperature
-40°C to +100°C
Storage Temperature
-55°C to +105°C
Thermal Shutdown, Case Temp.
100°C Typ.
Dimensions
2.28x2.40x0.50 inches
(57.9x61.0x12.7mm)
Case Material
aluminum
NOTES:
1. Measured from high line to low line
2. Measured from full load to zero load
3. On/Off Control: Positive logic default. Referenced to -Vin. Open collector.
Module ON...open circuit
Module OFF...<0.8Vdc
4. For negative logic On/Off control, add suffix “N” to the model number
V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062
www.v-infinity.com
1-866-372-1258
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VHB75W Series Half Brick DC-DC Converter
Rev. 07-2007
Application Notes
Derating:
The operating case temperature range of the VHB75 series is -40°C to +100°C. When operating the VHB75, proper derating or
cooling is needed. Following is the derating curve of VHB75 without heat sink.
Where:
The power dissapation (Pd) is
Pd= Pi - Po = Po (1- η )/
η
The thermal resistances are listed below.
The temperature rise (D T):
D T = Pd * Rca
V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062
www.v-infinity.com
1-866-372-1258
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VHB75W Series Half Brick DC-DC Converter
Rev. 07-2007
Remote On/Off Control
The VHB75 series allows the user to switch the module on and off electronically with the remote on/off feature. Logic control
defaults to “positive” logic. The diagram shows the recommentded curcuits for positive logic. The “negative logic” option is also
available.
External Output Trimming
Output may optionally be trimmed (±10%) with external fixed resistors or an external trimpot as shown.
Output Noise
The output noise is measured with a 10uF tantalum capacitor and a 1.0uF ceramic capacitor across the output.
V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062
www.v-infinity.com
1-866-372-1258