POWER
GENERAL
HD1-300 Series
SINGLE OUTPUT 60A DC-DC CONVERTERS
— 36-75V Input, 3.3V or 5V Output —
Features
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Tightly Regulated 3.3V or 5V Output
36-75 VDC Input (48V Nominal)
Up to 300W Continuous Output Power
No Minimum Load Requirement
High Efficiency
Built-in EMI Suppression
Remote On/Off
Fixed Operating Frequency
Fast Transient Response
Power Good Signal
Frequency Synchronization
Under-Voltage Lockout
Over-Voltage Shutdown
Short-Circuit Protection
Thermal Protection
Industry Standard Full Brick Package
Optional Installed Heat Sinks
Two-Year Warranty
1 Million Hour MTBF
HD1-300 Characteristics
Input Voltage............................................................ 36-75 VDC (48V, nominal).
EMI Suppression ..................................................... Pi input filter, standard.
Isolation Voltage ...................................................... 1500V, input to output, for one minute.
Continuous Output Power ....................................... Total output power should not exceed 200W for model HD1-300-3D
or 300W for model HD1-300-5D.
DC Output................................................................ See Electrical Characteristics table.
Base-Plate Temperature.......................................... +100°C, maximum (Note 2): Thermal shutdown circuitry with auto-
matic recovery.
Output Voltage Adjustment...................................... Adjustable by 10%.
Short-Circuit Protection ........................................... Continuous cycle-by-cycle current limiting with automatic recovery.
Under-Voltage Protection ........................................ Lockout activated at 34V-35.5V input; automatic recovery with 2V-
3V hysteresis (typical).
Over-Voltage Protection .......................................... HD1-300-3D, shutdown at 3.9V, typical; HD1-300-5D, shutdown at
6.5V, typical; RESET at VIN = 0V.
Transient Response................................................. 200µs recovery after half-load to full load step change to within 1%
of the regulation band with no more than 5% deviation.
Frequency of Operation........................................... 400 kHz, fixed.
Design Topology...................................................... Forward converter.
Remote Shutdown................................................... CMOS and open-collector TTL compatible. Choice of active high or
active low ENABLE: See following table for control conditions.
Power Good Signal ................................................. TTL HIGH = VOUT within tolerance.
Operating Temperature Range................................ -40°C to +100°C (base plate).
Temperature Coefficient .......................................... 0.02%/°C over the operating temperature range.
Relative Humidity .................................................... 0% to 95%, non-condensing.
POWER GENERAL
A Division of Nidec America Corporation
152 Will Drive ·Canton, MA 02021 USA·Phone 781-828-6216 ·Fax 781-830-1155 ·Email power@nidecpg.com ·http://www.nidec.com