•
Features
·37.5W-75W isolated output
·Efficiency to 85%
·300KHz switching frequency
·2:1 input range
·Regulated outputs
·Continuous short circuit protection
·Industry standard half-brick package
·Five-sided metal case
VHB75-Single Output Half Brick DC-DC Converter
Input
Input Voltage Range
12V 9-18V
24V 18-36V
48V 36-75V
12 Vin power up 8.8V
power down 8V
24Vin power up 17V
power down 16V
48Vin power down 34V
power down 32.5V
(see note 4&5)
Under Voltage Lockout
Positive Logic Remote ON/OFF
Input Filter
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
Line Regulation
1
Load Regulation
2
Over Voltage Protection trip Range, % Vo nom.
Current Limit
±1% max.
<500µ sec.
±10%
20mV RMS., max
75mV pk-pk., max
30mV RMS., max
100mV pk-pk., max
100mV RMS., max
240mV pk-pk, max
±0.03%/°C
Continuous
±0.2% max
±0.2% max
115-140%
110-150% Nominal Output
General Specifications
Efficiency
Isolation Voltage
Input/Output
Input/Case
Output/Case
Isolation Resistance
Switching Frequency
Operating Case Temperature
Storage Temperature
Thermal Shutdown, Case Temp.
Dimensions
Case Material
12-24Vin
48Vin
see table
1500VDC min.
1500VDC min.
1500VDC min.
10
7
Ohm min.
400KHz, Typ.
300KHz, Typ
-40°C to +100°C
-55°C to +105°C
100°C Typ.
2.28x2.40x0.50 inches
(57.9x61.0x12.7mm)
aluminum
V-Infinity, LLC, 9615 SW Allen Blvd Suite 103, Beaverton, OR 97005
www.v-infinity.com
1-866-372-1258
•
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...<0.8Vdc
VHB75-Single Output Half Brick DC-DC Converter
4. Suffix “N” to the model number with negative logic remote on/off
Model
Number
VHB75-D12-S2R5
VHB75-D12-S3R3
VHB75-D12-S5
VHB75-D12-S12
VHB75-D12-S15
VHB75-D12-S24
VHB75-D24-S2R5
VHB75-D24-S3R3
VHB75-D24-S5
VHB75-D24-S12
VHB75-D24-S15
VHB75-D24-S24
VHB75-D48-S2R5
VHB75-D48-SR33
VHB75-D48-S5
VHB75-D48-S12
VHB75-D48-S15
VHB75-D48-S24
Input
Voltage
9-18 VDC
9-18 VDC
9-18 VDC
9-18 VDC
9-18 VDC
9-18 VDC
18-36
18-36
18-36
18-36
18-36
VDC
VDC
VDC
VDC
VDC
Output
Voltage
2.5VDC
3.3VDC
5VDC
12VDC
15VDC
24VDC
2.5VDC
3.3VDC
5VDC
12VDC
15VDC
24VDC
2.5VDC
3.3VDC
5VDC
12VDC
15VDC
24VDC
Output
Current
15A
15A
15A
6.25A
5A
3.13A
15A
15A
15A
6.25A
5A
3.13A
15A
15A
15A
6.25A
5A
3.13A
I nput Current
No Load
Full Load
50mA
4110mA
50mA
5290mA
50mA
7715mA
50mA
7440mA
50mA
7440mA
50mA
7440mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
2029mA
2610mA
3810mA
3675mA
3675mA
3640mA
1015mA
1305mA
1883mA
1838mA
1838mA
1820mA
Effic.
76%
78%
81%
84%
84%
84%
77%
79%
82%
85%
85%
86%
77%
79%
83%
85%
86%
86%
Case
HB
HB
HB
HB
HB
HB
HB
HB
HB
HB
HB
HB
HB
HB
HB
HB
HB
HB
18-36 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
Case HB
Pin Connection
Pin
1.
2.
3.
4.
5.
6.
7.
8.
9.
Function
Vin
ON/OFF
NC
-Vin
-Vout
-Sense
Trim
+Sense
+Vout
V-Infinity, LLC, 9615 SW Allen Blvd Suite 103, Beaverton, OR 97005
www.v-infinity.com
1-866-372-1258
•
VHB75-Single Output Half Brick DC-DC Converter
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- )/
n
The thermal resistances are listed below.
n
The temperature rise (∆T):
∆T
= Pd * Rca
Remote ON/OFF Control
The VHB75 series allows the user to switch the module on and off electronically with the remote on/off feature. The VHB75
series is available with “positive logic” or “negative logic” options.
V-Infinity, LLC, 9615 SW Allen Blvd Suite 103, Beaverton, OR 97005
www.v-infinity.com
1-866-372-1258
•
VHB75-Single Output Half Brick DC-DC Converter
External Output Trimming
Output may optionally be externally trimmed (±10%) with a fixed resistor or an external trimpot as shown.
Output Noise
The output noise is measured with a 10µF tantalum capacitor and a 1.0µF ceramic capacitor across the output.
V-Infinity, LLC, 9615 SW Allen Blvd Suite 103, Beaverton, OR 97005
www.v-infinity.com
1-866-372-1258
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