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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............................................................
EMI Suppression .....................................................
Isolation Voltage ......................................................
Continuous Output Power .......................................
DC Output................................................................
Base-Plate Temperature..........................................
Output Voltage Adjustment ......................................
Short-Circuit Protection ...........................................
Under-Voltage Protection ........................................
Over-Voltage Protection ..........................................
Transient Response.................................................
Frequency of Operation...........................................
Design Topology ......................................................
Remote Shutdown ...................................................
Power Good Signal .................................................
Operating Temperature Range................................
Temperature Coefficient ..........................................
Relative Humidity ....................................................
36-75 VDC (48V, nominal).
Pi input filter, standard.
1500V, input to output, for one minute.
Total output power should not exceed 200W for model HD1-300-3D
or 300W for model HD1-300-5D.
See Electrical Characteristics table.
+100擄C, maximum (Note 2): Thermal shutdown circuitry with auto-
matic recovery.
Adjustable by 鹵10%.
Continuous cycle-by-cycle current limiting with automatic recovery.
Lockout activated at 34V- 35.5V input; automatic recovery with 2V-
3V hysteresis (typical).
HD1-300-3D, shutdown at 3.9V, typical; HD1-300-5D, shutdown at
6.5V, typical;
RESET
at V
IN
= 0V.
200 碌s recovery after half-load to full load step change to within 1%
of the regulation band with no more than 5% deviation.
400 kHz, fixed.
Forward converter.
CMOS and open-collector TTL compatible. Choice of active high or
active low
ENABLE
: See following table for control conditions.
TTL
HIGH
= V
OUT
within tolerance.
-40擄C to +100擄C (base plate).
鹵0.02%/擄C over the operating temperature range.
0% to 95%, non-condensing.
POWER GENERAL
A Division of Nidec America Corporation
152 Will Drive 路 Canton, MA 02021 USA 路 Phone 781-828-6216 路 Fax 781-830-1155 路 Email power@nidecpg.com 路 http://www.nidec.com
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