450-550 Watts 12V
DS450-3/DS550-3
850 Watts 12V DPS
Distributed Power System
Input
Distributed Power Bulk Front-End
450W - 550W
Total Output Power:
+12vdc Main Output
+3.3vdc Stand-By Output
Wide Range Input Voltage: 90 - 264VAC
Electrical Specs
90 - 264vac
47 - 63 Hz, single phase AC
15A Maximum
84% typical at full load, high line
FCC Subpart J EN55022 Class A
FCC Subpart J EN55022 Class A
0.99 typical
1.30mA @ 240VAC
20ms Minimum
+12v
+3.3vsb
Factory Set, no pot adjustments
+12vdc; +5%/-3%
+3.3vsb; +5%/-4%
See Table 1 next page
+12vdc; 13.5 - 15vdc
+3.3vsb; 3.76 - 4.30vdc
+12vdc; 11.0 - 11.5vdc
+3.3vsb; 2.77 - 3.00vdc
1 Second max,
2 - 20mS, Monotonic
Special Features
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Active Power Factor Correction
EN61000-3-2 Harmonic Compliance
Active AC Inrush Control
1U X 2U Form Factor
10.3W / in
3
(DS550)
8.4W / in
3
(DS450)
+12vdc Output
+3.3vdc Stand-By
No Minimum Load Required
Hot Plug Operation
N + 1 Redundant
Internal OR'ing Fets
Active Current Sharing
Built-in Cooling Fans (40mm x 28mm)
I
2
C Communication Interface Bus
EERPOM for FRU Data
Amber LED Status, Fan_Fail
Green LED Status, Power Good / AC_OK Status
Internal Fan Speed Control
Fan Fail Tach Output Signal
One Year Warranty
Input Range
Frequency
Inrush Current
Efficiency
Conducted EMI
Radiated EMI
Power Factor
Leakage Current
Hold Up Time
Output
Main DC Voltage
Stand-By
Adjustment Range
Regulation
Over Current
Over Voltage
Under Voltage
Turn-On Delay
+12vOutput Rise Time
Logic Control
PS Inhibit
PS_Status
AC_Pfail
Operating Temperature: +10°C to 45°C
Storage Temperature: -40° to +70°C
Altitude, Operating 10,000ft
-EN61000-3-2, -3-3
-EN55024:1998
Electromagnetic Susceptibility / Input Transients:
-EN61000-4-2, 4-4, -4-5, 4-11 Level
Humidity: 20 to 90% RH, non-condensing
Shock and Vibration Specification
(Complies with Astec Std Specification, Q3205
(50% power derating at 70°C)
Fan_Fault
Tach_1
Environmental
When supply is inserted into the system the pin is
pulled LOW and power supply is ON after all other pins
are seated
I2C port P6. When the power supply is on and running
normal P6 is low. When the power supply is off, either
due to -PS_ON, PS_KILL, or a fault, then P6 is high.
I2C port P7. P7 is high except when the power supply
turns the main outputs, not +3.3VSB, off due to an AC
failure (AC missing or too low for power supply
operation). If the supply is turned off due to -PS_ON,
PS_KILL, or a fault, then P7 remains high.
The PSU will provides an open collector Tach 1 output.
This signal is generated from the fan. The signal
should generate 2 pulses per revolution. The logic in
the system will be operating at 3.3V.
MTBF (Demonstrated): 400KHrs at full load, 40°C
UL/cUL 60950 (UL Recognized)
NEMKO+ CB Report EN60950
EN60950
CE Mark
China CCC
Safety
Technical Support: (888) 41-ASTEC or (407) 241-2752
Americas: (760) 930-4600
Europe (UK) 44 (1384) 842-211
Asia (HK) 852-2437-9662
Rev 1.06.05
ASTEC [ Astec America, Inc ]
