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DC-DC
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
General
Efficiency Isolation Voltage * 85% typical * 1500 VDC Input to Output, 1000 VDC Input to Ground, 500 VDC Output to Ground. * 370 kHz typical * 11.1 W/In3
Switching Frequency Power Density
Output
Output Voltage Output Voltage Trim Minimum Load Line Regulation Load Regulation Setpoint Accuracy Turn-on Time Transient Response * * * * * * * * See table 10% via potentiometer No minimum load required. 0.5% of nominal with input variation of 36-75V DC 1% of nominal with load variation 0-100% 1% of nominal with 48 VDC input and 50% load 1 s typical from application of DC input <4% deviation with a 50-75-50% load change at 1 A/s. Output returns to within 1% in less than 500 s 1% max pk-pk 20 MHz bandwidth, 0.1 F capacitor connected across measurement points 115-140% of nominal, recycle input DC to reset 105-115% of max current Continuous protection, trip and restart (Hiccup mode) characteristic 0.02%/C (after 20 minute warm up)
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
Ripple & Noise
*
Overvoltage Protection * Overcurrent Protection * Short Circuit Protection * Temperature Coefficient *
DC-DC
Models and Ratings
Output Voltage V1 12 VDC 24 VDC Max Output Current V1 29.0 A 14.5 A Fan Output V2 12 V/1 A 12 V/1 A Standby Supply V3 5 V/1 A 5 V/1 A Max Power 20 CFM Airflow 365 W 365 W
DFA350
Model Number DFA35048S12 DFA35048S24
Mechanical Details (U Channel)
A
A
8 X M3-0.5 MOUNTING THREAD 0.236(6.0) MAX SCREW PENETRATION TYP ON ALL SIDES OF POWER SUPPLY
6.80 (172.7)
LOGIC CONNECTOR AIRFLOW
3.20 (81.3)
VOLTAGE ADJUST V1 (+) DC OUTPUT INTERFACE CONNECTOR V1 (- )
VA (PRIMARY INPUT) 48 VDC INPUT BLOCK
+ -
12 VOLT FAN CONNECTOR
1.50 (38.1)
2 X 0.75 (19.1)
A
A
2 X 0.60 (15.2)
2 X 5.80 (147.3)
2 X 0.60 (15.2)
A A
2 X 2.00 (50.8)
A
A
0.60 (15.2)
2 X 5.80 (147.3)
Pin 1 2 3 4 5 6 7 8 9 10
Logic Connector Function DC IN OK Inhibit / Enable Not used DC OK Not used +Sense -Sense Not used 5 V Standby 5 V Standby Return
Logic Connector: JST PN B10B-PHDSS(LF)(SN) Mating Plug: JST PN PHDR-10VS Contact, 26-22 AWG: JST PN SPHD-001T-P0.5
DC-DC
Models and Ratings
Output Voltage V1 12.0 VDC 24.0 VDC Maximum Output Current 29.0 A 14.5 A Standby Supply V3 5 V/1 A 5 V/1 A Max Power 365 W 365 W
DFA350-H
Model Number DFA35048S12-H DFA35048S24-H
Mechanical Details (-H Hotswap)
OUTPUT CONNECTOR
INPUT CONNECTOR
INPUT & DC OUTPUT HEALTHY LED'S
0.125 (3.18)
0.156 (3.96) EJECTOR PIN R0.225 (5.71) ROTATION RADIUS GUIDE PIN C/L
EJECTOR HANDLE
1.60 (40.6)
0.225 (5.72) 0.655 (16.65) 10.06 (255.52) 0.385 (9.78) 10.00 (254)
0.175 (4.45)
CONNECTOR C/L
3.300 (83.82) MAX 1.636 (41.54)
OUTPUT CONNECTOR PIN LOCATIONS
P1 P2 P3 P4 1 2 3
A BC D MATING CONNECTOR FCI# 51762-10401200AA-LF
Pin A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 P1 P2 P3 P4
Pin Designator Function +Sense Not used DC OK -Sense Not used DC IN OK Not used Not used 5 V Standby Not used Inhibit / Enable 5 V Standby Return -V1 -V1 +V1 +V1
INPUT CONNECTOR PIN LOCATIONS
+
+
Ground
PIN4
-
-
Ground
PIN1
MATING CONNECTOR MOLEX# 39-01-2065
Output Connector FCI# 51722-10401200AA-LF
DC-DC
Thermal Considerations (U Channel)
DFA350
In order to ensure safe operation of the PSU in the end-use equipment, the temperature of the components listed in the table below must not be exceeded. See drawing on 2nd page of this datasheet for component locations. The temperature should be monitored using K type thermocouples placed on the hottest part of the component (out of any direct air flow). See longform datasheet for further information of service life.
Temperature Measurements (Ambient 50 C) Component L1 Q1 HS1 C25 Q2 Max Temperature C 90 C 105 C 85 C 75 C 105 C
Signals DFA350 & DFA350-H
Input Fail
POWER SUPPLY 5 V Standby Pin 9 or C3 330R
Max 12 V 20 mA
AC OK Collector Pin 1 or B3
Transistor On (<0.8 V): AC NOT OK Transistor Off (>4.5 V): AC OK AC OK Emitter Pin 7 or B1
5 V Standby Return Pin 10 or D3 J3 Logic Connector
DC OK
POWER SUPPLY 5 V Standby Pin 9 or C3 330R
Max 12 V 20 mA
DC OK Collector Pin 4 or A3
DC OK Emitter Pin 7 or B1
Transistor On (<0.8 V): DC NOT OK Transistor Off (>4.5 V): DC OK
5 V Standby Return Pin 10 or D3 J3 Logic Connector See 2nd page of this datasheet Mechanical Details for location
Remote On/Off (Inhibit/Enable)
POWER SUPPLY Internal Vref
JP1
Jumper (JP1) fitted (standard) Open or TTL high=PSU On Short circuit or TTL Low=PSU Off Jumper (JP1) removed Open or TTL high=PSU Off Short circuit or TTL Low=PSU On
Pin 2 or D2
Pin 7 or B1 J3 Logic Connector
31-Oct-08

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