DFA35048S12 Datasheet, PDF (1/4 Pages) XP Power Limited – DC-DC Converter

365 Watts
DFA Series
xppower.com
• U Channel and Hotswap DC-DC Converter
• -48 VDC Input
• DC Input version of MFA350 AC-DC Converter
• -10 °C to + 70 °C Operation
• Power Fail and DC OK Signals
• High Power Density up to 11.1 W / in ³
• 5 V Standby and 12 V Fan Supply Outputs
Specification
Input
Input Voltage Range
Input Current
Input Reverse Voltage
Protection
Undervoltage Lockout
Protection
• 48 VDC nominal (36 - 75 VDC).
Can be configured as -48 VDC input
• 9.2 A typical, 12.5 A max
• Continuous protection with
automatic recovery
• 32 - 36VDC
Output
Output Voltage
• See table
Output Voltage Trim • ±10% via potentiometer
Minimum Load
• No minimum load required.
Line Regulation
• ±0.5% of nominal with input variation of
36-75V DC
Load Regulation
• ±1% of nominal with load variation
0-100%
Setpoint Accuracy
• ±1% of nominal with 48 VDC input
and 50% load
Turn-on Time
• 1 s typical from application of DC input
Transient Response
• <4% deviation with a 50-75-50% load
change at 1 A/µs. Output returns to within
1% in less than 500 µs
Ripple & Noise
• 1% max pk-pk 20 MHz bandwidth,
0.1 µF capacitor connected across
measurement points
Overvoltage Protection • 115-140% of nominal,
recycle input DC to reset
Overcurrent Protection • 105-115% of max current
Short Circuit Protection • Continuous protection, trip and restart
(Hiccup mode) characteristic
Temperature
Coefficient
• 0.02%/°C (after 20 minute warm up)
General
Efficiency
Isolation Voltage
Switching Frequency
Power Density
• 85% typical
• 1500 VDC Input to Output,
1000 VDC Input to Ground,
500 VDC Output to Ground.
• 370 kHz typical
• 11.1 W/In³
Environmental
Operating Temperature • -10 °C to +50 °C with full load, derate
linearly to 50% load at 70 °C forced cooled.
Cooling
• >20 CFM forced airflow required
-H versions have integrated fan
Operating Humidity • 0 to 95% RH non condensing.
Storage Temperature • -40 °C to +80 °C.
Storage Humidity
• 0 to 95% RH non condensing.
Operating Altitude
• 3000m.
Shock
• ±3 shocks in each axis (total 18 shocks)
30 g 11ms (half sine).
Vibration
• 2 g, 10 - 500Hz 10 sweeps.
EMC & Safety
Emissions
EFT/Burst
Surge
Conducted Immunity
Safety Approvals
• Compliant with EN61204-3 2000,
EN55022 class A conducted & radiated
• Compliant with EN61000-4-4 level 1 Perf
Criteria A
• EN61000-4-5 level 1 Perf Criteria A,
• Compliant with EN61000-4-6 level 2 Perf
Criteria A
• UL60950-1 (2003), CE Marked to LVD