ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input
52 V/4 A Output
0RHB-D1T52L RoHS Compliant PRELIMINARY Rev.A
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Industry standard pinout and footprint
Highest efficiency in the industry: 92% at 52V, 4A; 91% at 52V, 2A
No heat sink required (baseplate standard)
Very low common-mode noise for a commercial DC/DC converter
Two-stage input filter
Constant switching frequency, 330 kHz
Remote sense
Single board SMT construction
Low profile, 0.43"
Optional low profile heat sink or baseplate for improved thermal performance
Header with M3 metal inserts for mechanical connection to PCB
UL and c-UL Recognized Component, TUV, UL1950, CSA 22.2 No. 950, IEC/EN 60950** Pending.
Microprocessor controlled
Over current protection
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Primary-side enable, choice of logic
Over voltage protection
Over temperature protection
Over/Under input voltage protection
Part Selection
Output
Voltage
Max. Output
Current
Input Voltage
Max. Output Power Typical Efficiency
Model Number
52 Vdc
36 Vdc - 75 Vdc
4 A
208 W
92%
0RHB-D1T52L
Notes: 1. Add “G” suffix at the end of the model number to indicate Tray Packaging.
2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
36 V
48 V
75 V
Input Current (full load)
Input Capacitance
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7 A
5 uF
2 V
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Input Hysteresis, Low Line
Note: Vin = 48Vdc, Ta@25˚ C, 300 LFM Airflow, Vout = 52Vdc, Iout = Full load unless otherwise noted.
Cout = 180μF Al-Elec. Available output power depends on ambient temperature and good thermal
management. (See application graphs for limits.)
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com