2 of 4
page
date
03/2008
PART NUMBER: VHB50W Series
DESCRIPTION: half brick dc-dc converter
Input
Input Voltage Range
24V
9-36V
18-75V
8.8V
8V
48V
Under Voltage Lockout
12Vin power up
12Vin power down
48Vin power up
48Vin power down
17V
16V
Positive Logic Remote ON/OFF3,4
Input Filter
PI Type
Output
Voltage Accuracy
±1% max.
<500μ sec.
±10%
Transient Response: 25% Step Load Change
External Trim Adj. Range
Ripple & Noise
20MHz BW, 3.3V, 5V
40mV RMS., max
100mV pk-pk, max
60mV RMS., max
150mV pk-pk, max
100mV RMS., max
240mV pk-pk, max.
±0.03%/°C
12V& 15V
24V
Temperature Coefficient
Short Circuit Protection
Safety
Continuous
approved to UL60950-1 (E222736)
±0.2% max
Line Regulation1
Load Regulation2
±0.2% max
Over Voltage Protection trip Range, % Vo nom.
Current Limit
115-140%
110-160% Nominal Output
General Specifications
Efficiency
see table
1500VDC min.
1500VDC min.
1500VDC min.
107 Ohm min.
300KHz, Typ.
Isolation Voltage
Input/Output
Input/Case
Output/Case
Isolation Resistance
Switching Frequency
Operating Case Temperature
Storage Temperature
-40°C to 100°C
-55°C to 105°C
100°C Typ.
Thermal Shutdown, Case Temp.
Dimensions
2.28x2.40x0.50 inches
57.9x61.0x12.7mm
aluminum
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: < 0.8VDC
4. Suffix “N” to the model number with negative logic remote ON/OFF.
th
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
CUI [ CUI INC ]
