DCDC
Filter & Surge Protection
DSF226 Series
xppower.com
•
Up to 200 W Output Power
•
Active Surge Protection
•
MILSTD 461 & DEFSTAN 59411
•
MILSTD 1275AD
•
DEFSTAN 615 Part 6 Issue 6
•
MILSTD 810
•
3 Year Warranty
Specification
Input
Input Voltage Range
Input Transient
Input Reverse Voltage
Protection
Fuse Protection
General
• 15 - 33 VDC
• ±250 V for 70 µs 15 mJ,
100 V for 50 ms 0.5 Ω
per MIL-STD-1275A/B/C/D
±600 V for 10 µS per MIL-STD-704A,
±200 V for 100 ns, pulse train,
174 V+Vin for 350 ms
per DEF-STAN 61-5 part 6 issue 6
10V for 1 s.
• Continuous
• External T25 A fuse is recommended
Output
Output Voltage
Output Power
Thermal Warning (TW)
Maximum Output
Capacitor
• Tracks input voltage & clamps <36 VDC
• 200 W max
• The TW output is an open collector
transistor rated at 100 VDC, with a
maximum sink current of 10 mA,
referenced to –V in/-V out. The signal
output is low when the maximum base
plate temperature is exceeded.
This signal indicates an over temperature
condition so that action can be taken by
the end application such as shutting down
non critical loads or individual downstream
DC/DC converters. If connected to the DIS
pin of the DSF226 this will disable the filter
output and perform as a thermal shut
down for the system.
The TW output will automatically return to
a high signal level once the filter base
plate has cooled to a temperature of less
than 100°C.
• 10,000 µF recommended
Efficiency
Isolation Voltage
Series Resistance
Disabled Input Current
Disable (DIS)
No Load Current
Package Style
MTBF
•
•
•
•
•
97% typical
500 VDC Input & Output to Case
<0.1 Ω
<25 mA
On = Open circuit
Off = Logic low or short circuit
• <35 mA
• Photo-etched nickel-silver case and
aluminium baseplate
• >2000 kHrs to MIL-HDBK-217F at 40 °C,
GB
Environmental
Operating Temperature
Storage Temperature
Salt Atmosphere
Humidity
Altitude
Shock
Vibration
•
•
•
•
•
•
-46 °C to +100 °C baseplate
-55 °C to +100 °C
MIL-STD-810F method 509.4
MIL-STD-810F 507.4
MIL-STD-810F 500.4
MIL-STD-810F 516.5 function test for
ground equipment 40 g in 3 axes
• MIL-STD-810F method 514.5C-17.
Minimum integrity test for military
equipment (1 Hr/axis, 3 axes).
Vibration 5-33 Hz, 0.5 mm displacement
EMC & Safety
Immunity
Emissions
Safety Approvals
• MIL-STD-1275A-D, MIL-STD-461E/F
(CS101, CS114, CS115 & CS116)
MIL-STD-704A, DEF-STAN 61-5 part 6 issue 6
• MIL-STD 461E/F CE101, CE102 &
DEF STAN 59-411 DCE01/DCE02 with
external components. (See application
notes and longform datasheet)
• CE marked
Output Power
Input Voltage
Output Voltage
Typical Efficiency
15-33 VDC
<36 VDC
97%
200 W
Model Number
DSF226
Mechanical Details
0.38 (9.6)
0.20(5.1)
1.33 1.25
(33.9) (31.8)
Case Pin
Customer mounting holes
Ø 3.2mm - 4 places
1.45
(36.8)
1.02
(25.9)
0.82
0.63 (20.9)
(15.9)
0.43
(10.9) 0.20
(5.0)
2.21 (56.1)
0.25 (6.4)
0.76
(19.4)
Pin Size - 7 Places:
Diameter: 0.047 (1.2)
Mounting Hole: 0.059 (1.5)
Material: Copper - tin alloy
Finish: 2.5 mm copper and
2.5 mm 5 N (tin)
0.51
(13.0)
2.41 (61.2)
Notes
1. All dimensions in inches (mm).
2. Weights: 0.165 lbs (75 g)
3. Tolerance ±0.012 (±0.3)
Application Notes
Typical Schematic for DEFSTAN 59411 Compliance
22 nF
FUSE
+Vin
+Vin
24 VDC
2 mH
-Vin
+Vout
+Vin
-Vin
+
2200 µF
50V
DSF226
(1)
+Vout
MTC50
10 µF
50V
-Vin
-Vout
Load
-Vout
22 nF
(1) Common mode choke part number W409 core from VAC and 2 x 6 turns, 1.5 mm wire.
Typical Schematic for MILSTD461E Compliance
100 nF
47 nF
FUSE
+Vin
24 VDC
-Vin
+Vin
1000 µF
DSF226
2.2 µF
-Vin
+Vin
+Vout
50V
+
100 µF
50V
+
10 µF
+Vout
MTC150
Load
50V
-Vin
-Vout
100 nF
-Vout
47 nF
06-Jan-14
DCDC
DSF226
Models & Ratings