Technical Specifications
Voltage Range
24 VDC Nominal 18.00 - 36.00 VDC
48 VDC Nominal 34.00 - 75.00 VDC
Reflected Ripple 80 mA
Input Reverse Voltage Protection Shunt Diode
HBD dual output, dc-dc converters feature high efficiency, 1500 VDC isolation, and open-frame packaging. The HBD
family allows board designers to deliver any combination of power from either output, up to each model’s maximum
rating. The HBD is available in 5V/3.3V or 3.3V/2.5V combinations in either a 24V or 48V input version. The HBD uses
planar magnetics and has an MTBF of over a million hours.
• Independent dual outputs
• Flexible load sharing
• High efficiency topology
• Open-frame design
• Planar magnetics
• Independent trim for each output
• 1500V Isolation
• 100°C baseplate operation
Description
Features
Input
Efficiency vs. Load (24V Input)
Efficiency vs. Load (48V Input)
Notes
1For negative logic, add suffix “N” to model number.
†MTBF predictions may vary slightly from model to model.
Specifications typically at 25°C, normal line, and full load, unless otherwise
stated.
Soldering Conditions: I/O pins, 260°C, ten seconds; fully compatible with
commercial wave-soldering equipment.
Safety: Agency approvals may vary from model to model. Please consult
factory for specific model information.
Units are water-washable and fully compatible with commercial spray or
immersion post wave-solder washing equipment.
Turn-On Time 10 ms
Remote Shutdown Positive Logic
Switching Frequency 500 kHz
Isolation
Input - Output 1500 VDC
Input - Case 1050 VDC
Output - Case 500 VDC
Temperature Coefficient 0.03%/°C
Case Temperature
Operating Range -40 To +100°C
Storage Range -40 To +125°C
Thermal Shutdown Range 105 To 115°C
Humidity Max., Non-Condensing 95%
Vibration, 3 Axes, 5 Min Each 5 g
MTBF†(Bellcore TR-NWT-000332) 1.3 x 106Hrs
Safety UL, cUL, VDE
Weight (approx.) 2.4 oz
General
Setpoint Accuracy ±1%
Line Regulation VinMin. - VinMax., Iout Rated, Output 1 0.2% Vout
Line Regulation VinMin. - VinMax., Iout Rated, Output 2 1.0% Vout
Load Regulation IoutMin. - IoutMax., Vin Nom., Output 1 0.5% Vout
Load Regulation IoutMin. - IoutMax., Vin Nom., Output2 1.0% Vout
Minimum Output Current 10% IoutRated
Dynamic Regulation, Loadstep 25% Iout
Pk Deviation 4% Vout
Settling Time 500 µs
Voltage Trim Range (5V/3.3V Units) ±10%
Power Limit Threshold Range, % of IoutRated 110 - 140%
OVP Trip Range (Main Ouput) 115 - 140% VoutNom.
Output