Additional Resources: Product Page
rev.
page 1 of 6
date 05/2009
PART NUMBER: VHB75 DESCRIPTION: dc-dc converter
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
Safety approvals
MODEL Input Output Output I nput Current
Voltage Voltage Current No Load Full Load Efficiency
VHB75-D12-S2R5 9-18 VDC 2.5VDC 15A 50mA 4110mA 76%
vHB75-D12-S3R3 9-18 VDC 3.3VDC 15A 50mA 5290mA 78%
VHB75-D12-S5 9-18 VDC 5VDC 15A 50mA 7715mA 81%
VHB75-D12-S12 9-18 VDC 12VDC 6.25A 50mA 7440mA 84%
VHB75-D12-S15 9-18 VDC 15VDC 5A 50mA 7440mA 84%
VHB75-D12-S24 9-18 VDC 24VDC 3.13A 50mA 7440mA 84%
VHB75-D24-S2R5 18-36 VDC 2.5VDC 15A 50mA 2029mA 77%
VHB75-D24-S3R3 18-36 VDC 3.3VDC 15A 50mA 2610mA 79%
VHB75-D24-S5 18-36 VDC 5VDC 15A 50mA 3810mA 82%
VHB75-D24-S12 18-36 VDC 12VDC 6.25A 50mA 3675mA 85%
VHB75-D24-S15 18-36 VDC 15VDC 5A 50mA 3675mA 85%
VHB75-D24-S24 18-36 VDC 24VDC 3.13A 50mA 3640mA 86%
VHB75-D48-S2R5 36-75 VDC 2.5VDC 15A 50mA 1015mA 77%
VHB75-D48-S3R3 36-75 VDC 3.3VDC 15A 50mA 1305mA 79%
VHB75-D48-S5 36-75 VDC 5VDC 15A 50mA 1883mA 83%
vHB75-D48-S12 36-75 VDC 12VDC 6.25A 50mA 1838mA 85%
VHB75-D48-S15 36-75 VDC 15VDC 5A 50mA 1838mA 86%
VHB75-D48-S24 36-75 VDC 24VDC 3.13A 50mA 1820mA 86%
th
20050 SW 112 Ave. Tualatin, Oregon 97062 pphhoonnee 503.612.2300 ffaaxx 503.612.2382 Additional Resources: Product Page
rev.
page 2 of 6
date 05/2009
DESCRIPTION: dc-dc converter
PART NUMBER: VHB75
INPUT
Input Voltage Range 12V: 9-18V
24V: 18-36V
48V: 36-75V
Under Voltage Lockout 12 Vin: power up 8.8V
power down 8V
24Vin: power up 17V
power down 16V
48Vin: power down 34V
power down 32.5V
ON/OFF Control see notes 3&4
Input Filter PI Type
OUTPUT
Voltage Accuracy 1% max.
Transient Response: 25% Step Load Change <500 sec.
External Trim Adj. Range 10%
Ripple & Noise 2.5V, 3.3V, 5V 20 mV RMS., max
20MHz BW 75 mV p-p., max
12V & 15V 30 mV RMS., max
100 mV p-p., max
24V 100 mV RMS., max
240 mV p-p, max
Temperature Coefficient 0.03%/C
Short Circuit ProtectionContinuous
Safety approved to UL1950 (E222736)
1
Line Regulation 0.2% max
2
Load Regulation 0.2% max
Over Voltage Protection trip Range, % Vo nom. 115-140%
Current Limit 110-150% Nominal Output
GENERAL SPECIFICATIONS
Efficiency see table
Isolation Voltage Input/Output 1500VDC min.
Input/Case 1500VDC min.
Output/Case 1500VDC min.
7
Isolation Resistance 10 Ohm min.
Switching Frequency 12-24Vin 400kHz, Typ.
48Vin 300kHz, Typ
Operating Case Temperature -40C ~ +100C
Storage Temperature -55C ~ +105C
Thermal Shutdown, Case Temp. 100C 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
th
20050 SW 112 Ave. Tualatin, Oregon 97062 pphhoonnee 503.612.2300 ffaaxx 503.612.2382