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VHB100 Series Half Brick DC-DC Converter
Rev. 05-2007
Features
·50-100W isolated output
·Efficiency to 85%
·500KHz switching frequency
·2:1 input range
·Regulated outputs
·Continuous short circuit protection
·Five-sided metal case
·Industry standard half-brick
package
Model
Number
VHB100-D24-S2R5
VHB100-D24-S3R3
VHB100-D24-S5
VHB100-D24-S12
VHB100-D24-S15
VHB100-D24-S24
VHB100-D48-S2R5
VHB100-D48-S3R3
VHB100-D48-S5
VHB100-D48-S12
VHB100-D48-S15
VHB100-D48-S24
Input
Voltage
18-36VDC
18-36VDC
18-36VDC
18-36VDC
18-36VDC
18-36VDC
36-75VDC
36-75VDC
36-75VDC
36-75VDC
36-75VDC
36-75VDC
Output
Voltage
2.5VDC
3.3VDC
5VDC
12VDC
15VDC
24VDC
2.5VDC
3.3VDC
5VDC
12VDC
15VDC
24VDC
Output
Current
20A
20A
20A
8.3A
6.7A
4.17A
20A
20A
20A
8.3A
6.7A
4.17A
Input Current
No Load
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
Full Load
2705mA
3480mA
5020mA
4880mA
4925mA
4905mA
1335mA
1720mA
2480mA
2442mA
2463mA
2463mA
Efficiency
77%
79%
83%
85%
85%
85%
78%
80%
84%
85%
85%
85%
Pin Connection
Pin
1.
2.
3.
4.
5.
6.
7.
8.
9.
Function
+Vin
ON/OFF
Case
-Vin
-Vout
-Sense
Trim
+Sense
+Vout
V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062
www.v-infinity.com
1-866-372-1258
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VHB100 Series Half Brick DC-DC Converter
Rev. 05-2007
Input
Input Voltage Range
Under Voltage Lockout
24V
48V
24Vin power up
24Vin power down
48Vin power up
48Vin power down
Positive Logic Remote ON/OFF
18-36V
36-75V
17V
16V
34V
32.5V
Input Filter
Logic Compatibility: Open Collector reference to -Vin
Module ON: Open Circuit
Module OFF: < 0.8VDC
PI Type
Output
Voltage Accuracy
Transient Response: 25% Step Load Change
External Trim Adj. Range
Ripple & Noise
20MHz BW, 2.5V, 3.3V, 5V
12V& 15V
24V
Temperature Coefficient
Short Circuit Protection
Safety
Line Regulation
1
Load Regulation
2
Over Voltage Protection trip Range, % Vo nom.
Current Limit
±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 (E222736)
±0.2% max
±0.2% max
115-140%
110-140% Nominal Output
General Specifications
Efficiency
Isolation Voltage
Input/Output
Input/Case
Output/Case
see table
1500VDC min.
1500VDC min.
1500VDC min.
10
7
Ohm min.
500KHz, Typ.
-40°C to 100°C
-40°C to 105°C
100°C Typ.
2.28x2.40x0.50 inches
57.9x61.0x12.7mm
Case Material
NOTES:
1. Measured from High Line to Low Line
2. Measured from Full Load to Zero Load
3. Logic Compatibility: Open Collector Ref. to -Input
Module ON: Open Circuit
Module OFF: <0.8 VDC
4. Suffix “N” to the Model Number with Negative Logic Remote ON/OFF
Isolation Resistance
Switching Frequency
Operating Case Temperature
Storage Temperature
Thermal Shutdown, Case Temp.
Dimensions
aluminum
V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062
www.v-infinity.com
1-866-372-1258
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VHB100 Series Half Brick DC-DC Converter
Rev. 05-2007
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
)/
The thermal resistances are listed below.
η
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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VHB100 Series Half Brick DC-DC Converter
Rev. 05-2007
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
