DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 40

Technical content

  • Screw Terminals Available
  • U Channel & Cover Fan Formats
  • High Power Density 11.1 W/in
  • 5 V Standby & 12 V Fan Outputs
  • Active Current Share
  • Remote On/Off
  • AC & DC OK Signals
  • -10 ºC to +70 ºC Operation
  • Level B Conducted Emissions The MFA350 has been designed with multiple mechanical options to facilitate its integration into a wide range of applications. Designers of these systems demand higher power from AC-DC units in industry-standard formats as processing power and functionality grows within tight space constraints. The MFA350 delivers over 350 W across the full universal AC input range fro m an power density without compromising performance or functionality. With efficiency up to 88% at full load, the MFA350 operates up to 50 °C ambient and up to 70 °C ambient with derating. The main output is 12, 24 or 48 VDC but each power supply also has a 5 V, 0.3 A standby output and a 12 V, 1A output for powering fans. The unit incorporates a fully featured signal set including AC OK/DC OK, remote on/off and active current sharing.

xppower.com Input Characteristics Characteristic Minimum T ypical Maximum Units Notes & Conditions Input Voltage - Operating 85 264 VAC Derate output power 10% < 90 VAC Input Frequency 47 50/60 63 Hz Power Factor >0.9 EN61000-3-2 class A EN61000-3-2 class C for loads ≥20% Input Current - No Load 100 mA Input Current - Full Load 3.6/1.8 A 115/230 VAC Inrush Current 60 A 230 VAC cold start Earth Leakage Current 1 mA 230 VAC/50 Hz Input Protection T6.3A/250 V internal fuse in line Output Characteristics Characteristic Minimum T ypical Maximum Units Notes & Conditions Output Voltage - V1 12 48 VDC See Models and Ratings table Initial Set Accuracy ±1 (V1) , ±5 (V2) & ±3 (V3) % Output Voltage Adjustment ±10 % Minimum Load 0 No minimum load required Start Up Delay 1 2 s 90 VAC full load (see fig. 1) Hold Up Time 16 20 ms 90 VAC full load (see fig. 2 & 3) Drift ±0.2 % After 20 min warm up Line Regulation ±0.5 (V1) , ±3 (V2) & ±3 (V3) % Load Regulation ±1 (V1) , ±5 (V2) & ±3 (V3) % 0-100% load. V2 10-100% load T ransient Response - V1 4 % Recovery within 1% in less than 500 μs for a 50-75% and 75-50% load step Over/Undershoot - V1 1 % (see fig. 4) Ripple & Noise 1 (V1 & V3) & 2 (V2) % pk-pk 20 MHz bandwidth (see fig. 6 & 7) Overvoltage Protection 115 140 % Vnom DC. Output 1 only, recycle input to reset Overload Protection 110 140 % I nom Output 1 only, auto reset (see fig. 5) Short Circuit Protection Continuous T emperature Coefficient 0.05 %/˚C Overtemperature Protection 75 °C Thermal sensor under PCB Models and Ratings Output Voltage Maximum Output Current Fan Output (2) Standby Supply Max Power

13 CFM Airflow Model Number (1)

12.0 VDC 29.0 A 12 V/1 A 5 V/0.3 A 361 W MFA350PS12 24.0 VDC 14.5 A 12 V/1 A 5 V/0.3 A 361 W MFA350PS24 48.0 VDC 7 .3 A 12 V/1 A 5 V/0.3 A 364 W MFA350PS48 Notes 1. Units supplied with Molex connections for J1 & J2 as standard. Add suffix ‘-S’ to model number to replace with screw termina ls. Add suffix ‘-TF’ for covered version with top fan and suffix ‘-EF’ for covered version with end fan. Example:- MFA350PS12-STF , 12 V unit fitted with screw terminals and top fan. 2. Not available for -TF & -EF versions.

xppower.com Xxxxxxxxxx General Specifications Characteristic Minimum T ypical Maximum Units Notes & Conditions Efficiency 86 % Full load (see fig. 8 & 9) Isolation: Input to Output Input to Ground Output to Ground

3000 VAC

1500 VAC

100 VDC

Switching Frequency: PFC Main Converter 62 kHz 157 kHz Power Density 11.1 W/in Mean Time Between Failure 460 kHrs MIL-HDBK-217F , Notice 2 +25 °C GB Weight 1.35 (612) lb (g) Characteristic Notes & Conditions Signals AC OK/Powerfail Open collector referenced to output 0V , transistor normally off when AC is good (see fig. 10, 16, 17 & 18) AC OK: Provides ≥ 5 ms warning of loss of output from AC failure DC OK Open collector referenced to 0 V , transistor normally off when DC is good (see fig. 11, 19 & 20). Provides warning of DC output failure Remote On/Off (Inhibit/Enable) Remotely switches outputs off, can also be configured as enable (see fig.12) Current Share Up to 3 supplies can be connected in parallel. Output current is shared within 10% at full load. Derate overall output current to 90% when used in parallel (see fig.13, 14 & 15) Remote Sense Compensates for 0.5 V total voltage drop Efficiency Versus Load 72% 74% 76% 78% 80% 82% 84% 86% 88% 0% 20% 40% 60% 80% 100% 120% Load % Efficiency % Figure 8 MFA350PS12 @ 230 VAC 66% 68% 70% 72% 74% 76% 78% 80% 82% 84% 86% 88% 90% 0% 20% 40% 60% 80% 100% 120% Load % Efficiency % Figure 9 MFA350PS48 @ 230 VAC

xppower.com Signals AC OK/Power Fail AC OK Collector Pin 1 AC OK Emitter Pin 7 POWER SUPPLY Transistor On (<0.8 V): AC NOT OK Transistor Off (>4.5 V): AC OK J3 Logic Connector 330R

5 V Standby

Transistor On (<0.8 V): DC NOT OK Transistor Off (>4.5 V): DC OK J3 Logic Connector 330R Pin 2Jumper (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 Internal Vref JP1 See page 12 Mechanical Details for location Remote On/Off (Inhibit) Figure 10 Figure 11 Figure 12

xppower.com Xxxxxxxxxx Signals Parallel Load & Current Share Connections - + - + - + - + V1 Output V1 Output V1 Output - Sense - Sense + Sense + Sense - Sens e + Sense Current Share Current Share PSU 1 PSU 2 PSU 3 Load Parallel Remote On/Off (Inhibit) Connection Parallel AC OK Connection (DC OK follows same format) Figure 13 Figure 14 Figure 15 PSU 1 PSU 2 PSU 3 Pin 2 Pin 7 Pin 2 Pin 7 Pin 2 Pin 7 J3 LOGIC CONNECTORS Jumper (JP1) fitted 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 AC OK Collector Pin 1 AC OK Emitter Pin 7 POWER SUPPLY 1 J3 Logic Connector 330R Transistor On (<0.8 V): AC NOT OK Transistor Off (>4.5 V): AC OK AC OK Collector Pin 1

xppower.com Xxxxxxxxxx Signals Figure 16 AC OK signal at AC switch on Figure 17 AC OK signal at AC switch off Figure 18 V1 warning time at AC OK signal

90 VAC full load (MFA350PS12)

xppower.com Xxxxxxxxxx Environmental Characteristic Minimum T ypical Maximum Units Notes & Conditions Operating T emperature -10 +70 °C Derate linearly from +50 °C at 2.5%/°C to 50% at 70 °C when forced cooled. See Thermal Considerations. Storage T emperature -20 +85 °C Cooling 13 CFM U Channel Version. -TF & -EF models have integral fan. See Thermal Considerations for U Channel. Humidity 5 95 %RH Non-condensing Operating Altitude 3000 m Shock 3 x 30 g/11 ms shocks in both +ve & -ve directions along the 3 orthogonal axis, total 18 shocks. Vibration Single axis 10-500 Hz at 2 g x 10 sweeps Electromagnetic Compatibility - Emissions Electromagnetic Compatibility - Immunity Phenomenon Standard T est Level Criteria Notes & Conditions Harmonic Current EN61000-3-2 Class A Class C For loads ≥20% EFT EN61000-4-4 3 A Surges EN61000-4-5 Installation Class 3 A Conducted EN61000-4-6 10 V rms A Dips and Interruptions EN61000-4-11 30% 10 ms A 60% 100 ms B 100% 5000 ms B Phenomenon Standard T est Level Criteria Notes & Conditions Conducted EN55022 Class B See fig. 21 Radiated EN55022 Class A Voltage Fluctuations EN61000-3-3 Safety Agency Approvals Figure 21 Typical EMC Plot Safety Agency Safety Standard Category CB Report CSA #1790948 IEC60950-1:2001 Information T echnology CSA CSA certificate #179094 CSA22.2 No. 60950-1-05 Information T echnology UL UL File #E139109 UL60950-1 (2003) Information T echnology TUV TUV Certificate #B 07 02 57396 024 EN60950-1/A11:2004 Information T echnology CE LVD

5.80 (147.30) 6.80 (172.72) 0.80 (2.02) 2.00 (50.79) 2.00 (50.79) 0.60 (15.20) AIRFLOW 2.00 (50.80) 3.32 (84.50) 0.66 (16.80) 3.32 (84.50) AC Input Interface connector V1(+) V1(-) Logic Connector Voltage Adjust Output Interface Connector 4 x M3-0.5 Mounting Thread 0.236 (6.0) Max Screw Penetration bottom side of xppower.com 3.20 (81.3) 1.50 (38.1) 3.20 (81.3) AIRFLOW 2 x 2.00 (50.8) 2 x 0.60 (15.3) 6.80 (172.7) AC INPUT INTERFACE CONN 2 x 0.60 (15.2) 2 x 1.50 (38.1) 2 x 0.75 (19.1) 2 x 0.60 (15.2) 2 x 6.80 (172.7) 2 x 5.80 (147.3) 2 x 5.80 (147.3) LOGIC CONNECTOR VOLTAGE ADJUST DC OUTPUT INTERFACE CONNECTOR V1(+) V1(-) 8 X M3-0.5 MOUNTING THREAD 0.236 (6.0) MAX SCREW PENETRATION TYP ON ALL SIDES OF POWER SUPPLY Max Torque 4.0-5.0 in-lb (0.045 - 0.057 kg-m) AA A A A A BR1 D35 AA JP1 (ENABLE) FAN CONNECTOR V2 C63 Notes 1. All dimensions in inches (mm). Mechanical Details U Channel Version Top Fan Version (Suffix TF)

xppower.com AIRFLOW 8.28 (210.31) 1.75 (44.45) 4.00 (10.16) V1(+) V1(-) Logic Connector Voltage Adjust Output Interface Connector 0.08 (2.03) 0.66 (16.84) 1.37 (34.92) 2.00 (50.80) 1.75 (44.45) 6.80 (172.70) 8.20 (208.28) 3.32 (84.48)3.32 (84.47) 1.75 (44.45) AC Input Interface Connector 5 x M3-0.5 Mounting Thread 0.236 (6.0) Max Screw Penetration bottom side of power supply. Max Torque 4.5-5.0 in-lb (0.045-0.057 kg-m) 0.60 (15.20) 8.20 (208.28) 7.20 (182.88) 5.80 (147.32) PIN CONNECTIONS LOGIC CONNECTOR J3 JST B10B-PHDSS (LF) (SN)

1 AC OK

2 ROF (Inhibit/Enable)

3 Current Share

4 DC OK

5 Not used

8 Not Used

Mechanical Details - Pin Connections PIN CONNECTIONS AC INPUT J1 Molex 26-60-4050

1 GND

3 Neutral

5 Line

Mating Parts: Molex 09-50-3051 or Housing 43061-0005 Contact 08-70-1030 Option ‘-S’ screw terminals Phoenix Contact: MKDS 1/5-3.81 or similar accepts 26-16 AWG wire (contacts 2 & 4 removed) Max T orque 1.73 in-lb (0.02 kg-m) Mating Parts: Molex 09-50-3101 or Housing 43061-0010 Contact 08-70-1030 Option ‘-S’ screw terminals 2 x Phoenix Contact: MKDS 1/5-3.81 or similar accepts 26-16 AWG wire Max T orque 1.73 in-lb (0.02 kg-m) Mating Parts: JST Housing PHDR-10VS Contact SPHD-001T -P0.5 Mating Parts: Molex Housing 22-01-1024 Contact 08-70-0057 Notes 1. All dimensions in inches (mm). Mechanical Details End Fan Version (Suffix EF)

xppower.com 05-Oct-11 Thermal Considerations (U Channel) In order to ensure correct and reliable operation of the PSU in the most adverse conditions permitted in the end-use equipment, the temperature of the components listed in the table below must not be exceeded. See drawing on page 12 for component locations. Temperature should b e monitored using K type thermocouples placed on the hottest part of the component (out of any direct air flow). Temperature Measurements (Ambient ≤ 50 ºC) Component Max Temperature ºC T3 90 °C BR1 105 °C D35 85 °C L3 90 °C Service Life The estimated service life of the MFA350 is determined by the cooling arrangements and load conditions experienced in the end a pplication. Due to the uncertain nature of the end application this estimated service life is based on the actual measured temperature of two key capa citors within the product when installed in the end application. The highest of the two component temperatures should be used. The graph below expresses the estimated lifetime for a given component temperature and assumes continuous operation at this temperature. 5000 25000 45000 65000 85000 105000 125000 145000 165000 185000 105 95 85 75 65 C8 & 63 Temperature (°C) Lifetime (Hrs) Estimated Service Life vs Component Temperature

  • High Power Density 6.7 W/in
  • 5 V Standby Output
  • Active Current Share
  • Remote On/Off
  • AC & DC OK Signals
  • -10 ºC to +70 ºC Operation
  • High Efficiency
  • Level B Conducted Emissions Designed for communications applications, the MFA350 Hotswap has been developed to meet the needs of networking equipment, voice over IP systems, wireless LANs, servers, storage area networks and post-production broadcast equipment. Designers of thes e systems demand higher power from AC-DC units as processing power and functionality grows within tight space constraints. The 1.6 inches (40.6 mm) high and achieves 6.7 Watts per cubic inch power density without compromising performance or functionality . With full power operation at up to 50 °C ambient and operation to 70 °C ambient with derating. The main output is either 12, 24 or 48 VDC but each power supply also has a 5 V, 0.3 A standby output. The unit incorporates an integral fan and a fully featured sign al set including AC OK/DC OK, remote on/off and active current sharing.

xppower.com Input Characteristics Output Characteristics Characteristic Minimum T ypical Maximum Units Notes & Conditions Output Voltage - V1 12 48 VDC See Models and Ratings table Initial Set Accuracy ±1 (V1) , ±5 (V2) & ±3 (V3) % Output Voltage Adjustment ±10 % Via potentiometer through hole in cover Minimum Load 0 No minimum load required Start Up Delay 1 2 s 90 VAC full load (see fig. 1) Hold Up Time 16 20 ms 90 VAC full load (see fig. 2 & 3) Drift ±0.2 % After 20 min warm up Line Regulation ±0.5 (V1) , ±3 (V2) & ±3 (V3) % Load Regulation ±1 (V1) , ±5 (V2) & ±3 (V3) % V1 5-100% load. V2 10-100% load T ransient Response - V1 4 % Recovery within 1% in less than 500 μs for a 50-75% and 75-50% load step Over/Undershoot - V1 1 % (see fig. 4) Ripple & Noise 1 (V1 & V3) & 2 (V2) % pk-pk 20 MHz bandwidth (see fig. 6 & 7) Overvoltage Protection 115 140 % Vnom DC. Output 1 only, recycle input to reset Overload Protection 110 140 % I nom Output 1 only, auto reset (see fig. 5) Short Circuit Protection Continuous, trip and restart (hiccup mode) T emperature Coefficient 0.05 %/˚C Overtemperature Protection 75 °C Thermal sensor under PCB Models and Ratings Output Voltage Maximum Output Current Standby Supply Max Power Model Number 12.0 VDC 29.0 A 5 V/0.3 A 350 W MFA350PS12-H 24.0 VDC 14.5 A 5 V/0.3 A 350 W MFA350PS24-H 48.0 VDC 7 .3 A 5 V/0.3 A 352 W MFA350PS48-H Characteristic Minimum T ypical Maximum Units Notes & Conditions Input Voltage - Operating 85 264 VAC Derate output power 10% < 90 VAC Input Frequency 47 50/60 63 Hz Power Factor >0.9 EN61000-3-2 class A EN61000-3-2 class C for loads ≥20% Input Current - No Load 100 mA Input Current - Full Load 3.6/1.8 A 115/230 VAC Inrush Current 60 A 230 VAC cold start Earth Leakage Current 1 mA 230 VAC/50 Hz Input Protection T6.3A/250 V internal fuse in line

xppower.com Characteristic Minimum T ypical Maximum Units Notes & Conditions Efficiency 86 % Full load (see fig. 8 & 9) Isolation: Input to Output Input to Ground Output to Ground Switching Frequency: PFC Main Converter 62 kHz 157 kHz Power Density 6.7 W/in Mean Time Between Failure 400 kHrs MIL-HDBK-217F , Notice 2 +25 °C GB Weight 2.65 (1202) lb (g) Characteristic Notes & Conditions Signals AC OK/Powerfail Open collector referenced to output 0V , transistor normally off when AC is good (see fig. 10, 16, 17 & 18) AC OK: Provides ≥ 5 ms warning of loss of output from AC failure DC OK Open collector referenced to 0 V , transistor normally off when DC is good (see fig. 11, 19 & 20). Provides warning of DC output failure Remote On/Off (Inhibit/Enable) Remotely switches outputs off, can also be configured as enable (see fig.12) Current Share Up to 3 supplies can be connected in parallel. Output current is shared within 10% at full load. Derate overall output current to 90% when used in parallel (see fig.13, 14 & 15) Remote Sense Compensates for 0.5 V total voltage drop Efficiency Versus Load 72% 74% 76% 78% 80% 82% 84% 86% 88% 0% 20% 40% 60% 80% 100% 120% Load % Efficiency % Figure 8 MFA350PS12-H @ 230 VAC 66% 68% 70% 72% 74% 76% 78% 80% 82% 84% 86% 88% 90% 0% 20% 40% 60% 80% 100% 120% Load % Efficiency % Figure 9 MFA350PS48-H @ 230 VAC

xppower.com Signals AC OK/Power Fail DC OK Collector Pin A3 DC OK Emitter Pin B1 POWER SUPPLY Transistor On (<0.8 V): DC NOT OK Transistor Off (>4.5 V): DC OK FCI OUTPUT CONNECTOR 330R D2Jumper (JP1) fitted Open or TTL high = PSU On Short circuit or TTL Low = PSU Off Internal Vref Remote On/Off (Inhibit) Figure 10 Figure 11 Figure 12 AC OK Collector Pin B3 AC OK Emitter Pin B1 POWER SUPPLY Transistor On (<0.8 V): AC NOT OK Transistor Off (>4.5 V): AC OK FCI OUTPUT CONNECTOR 330R

xppower.com Parallel Load & Current Share Connections - + - + - + - + V1 Output V1 Output V1 Output - Sense - Sense + Sense + Sense - Sens e + Sense Current Share Current Share PSU 1 PSU 2 PSU 3 Load Parallel Remote On/Off (Inhibit) Connection Parallel AC OK Connection (DC OK follows same format) Figure 13 Figure 14 Figure 15 PSU 1 PSU 2 PSU 3 Pin D2 Pin B1 Pin D2 Pin B1 Pin D2 Pin B1 FCI OUTPUT CONNECTOR Jumper (JP1) fitted Open or TTL high = PSU On Short circuit or TTL Low = PSU Off AC OK Collector Pin B3 AC OK Emitter Pin B1 POWER SUPPLY 1 FCI Output Connector 330R Transistor On (<0.8 V): AC NOT OK Transistor Off (>4.5 V): AC OK AC OK Collector Pin B3

xppower.com Figure 16 AC OK signal at AC switch on Figure 17 AC OK signal at AC switch off Figure 18 V1 warning time at AC OK signal

90 VAC full load (MFA350PS12-H)

xppower.com Characteristic Minimum T ypical Maximum Units Notes & Conditions Operating T emperature -10 +70 °C Derate linearly from +50 °C at 2.5%/°C to 50% at 70 °C when forced cooled. Storage T emperature -20 +85 °C Cooling CFM Integral fan Humidity 5 95 %RH Non-condensing Operating Altitude 3000 m Shock 3 x 30 g/11 ms shocks in both +ve & -ve directions along the 3 orthogonal axis, total 18 shocks. Vibration Single axis 10-500 Hz at 2 g x 10 sweeps Electromagnetic Compatibility - Emissions Electromagnetic Compatibility - Immunity Phenomenon Standard T est Level Criteria Notes & Conditions Conducted EN55022 Class B See fig. 21 Radiated EN55022 Class A Voltage Fluctuations EN61000-3-3 Safety Agency Approvals Figure 21 Typical EMC Plot Safety Agency Safety Standard Category CB Report CSA #1790948 IEC60950-1:2001 Information T echnology CSA CSA certificate #179094 CSA22.2 No. 60950-1-05 Information T echnology UL UL File #E139109 UL60950-1 (2003) Information T echnology TUV TUV Certificate #B 07 02 57396 024 EN60950-1/A11:2004 Information T echnology CE LVD Phenomenon Standard T est Level Criteria Notes & Conditions Harmonic Current EN61000-3-2 Class A Class C For loads ≥20% EFT EN61000-4-4 3 A Surges EN61000-4-5 Installation Class 3 A Conducted EN61000-4-6 10 V rms A Dips and Interruptions EN61000-4-11 30% 10 ms A 60% 100 ms B 100% 5000 ms B

xppower.com Xxxxxxxxxx Mechanical Details IEC320 INPUT CONNECTOR AC INPUT & DC OUTPUT HEALTHY LED’S EJECTOR HANDLE OUTPUT CONNECTOR 0.125 (3.18) 1.60 (40.6) GUIDE PIN C/L 0.655 (16.64) 0.385 (9.78) 10.06 (255.52) 10.00 (254.0) ø0.156 (3.96) EJECTOR PIN R0.225 (5.71) ROTATION RADIUS 0.225 (5.72) 0.175 (4.44) CONNECTOR C/L 3.30 (83.8) MAX 1.636 (41.55) Notes 1. All dimensions in inches (mm). Pin Connections PIN CONNECTIONS OUTPUT CONNECTOR FCI 51732-035-LF A1 +Sense A2 Not Used A3 DC OK B1 -Sense B2 Not Used B3 AC OK C1 Current Share C2 Not Used C3 5 V Standby V3 D1 Not Used D2 ROF (Inhibit/Enable) D3 5 V Standby Return V3 P1 -V1 P2 -V1 P3 +V1 P4 +V1 PIN CONNECTIONS INPUT CONNECTOR IEC320 Earth LiveNeutral Viewed looking at PSU male part PIN CONNECTIONS OUTPUT CONNECTOR 1 2 3 D C B A P1 P2 P3 P4 Viewed looking at PSU male part Mating parts: FCI 51762-10401200AA-LF

  • Screw Terminals Available
  • U Channel & Cover Fan Formats
  • High Power Density 13.3 W/in
  • 5 V Standby & 12 V Fan Outputs
  • Active Current Share
  • Remote On/Off
  • AC & DC OK Signals
  • -10 ºC to +70 ºC Operation
  • Level B Conducted Emissions The MFA420 has been designed with multiple mechanical options to facilitate its integration into a wide range of applications. Designers of these systems demand higher power from AC-DC units in industry-standard formats as processing power and functionality grows within tight space constraints. The MFA420 delivers over 420 W across the full universal AC input range fro m an power density without compromising performance or functionality. With efficiency up to 88% at full load, the MFA420 operates up to 50 °C ambient and up to 70 °C ambient with derating. The main output is 12, 24 or 48 VDC but each power supply also has a 5 V, 0.3 A standby output and a 12 V, 1A output for powering fans. The unit incorporates a fully featured signal set including AC OK/DC OK, remote on/off and active current sharing.

xppower.com Input Characteristics Characteristic Minimum T ypical Maximum Units Notes & Conditions Input Voltage - Operating 85 264 VAC Derate output power 10% < 90 VAC Input Frequency 47 50/60 63 Hz Power Factor >0.9 EN61000-3-2 class A EN61000-3-2 class D Input Current - No Load 100 mA Input Current - Full Load 3.6/1.8 A 115/230 VAC Inrush Current 60 A 230 VAC cold start Earth Leakage Current 1 mA 230 VAC/50 Hz Input Protection T6.3A/250 V internal fuse in line Output Characteristics Characteristic Minimum T ypical Maximum Units Notes & Conditions Output Voltage - V1 12 48 VDC See Models and Ratings table Initial Set Accuracy ±1 (V1) , ±5 (V2) & ±3 (V3) % Output Voltage Adjustment ±10 % Minimum Load 0 No minimum load required Start Up Delay 1 2 s 90 VAC full load (see fig. 1) Hold Up Time 16 20 ms 90 VAC full load (see fig. 2 & 3) Drift ±0.2 % After 20 min warm up Line Regulation ±0.5 (V1) , ±3 (V2) & ±3 (V3) % Load Regulation ±1 (V1) , ±5 (V2) & ±3 (V3) % 0-100% load. V2 10-100% load T ransient Response - V1 4 % Recovery within 1% in less than 500 μs for a 50-75% and 75-50% load step Over/Undershoot - V1 1 % (see fig. 4) Ripple & Noise 1 (V1 & V3) & 2 (V2) % pk-pk 20 MHz bandwidth (see fig. 6 & 7) Overvoltage Protection 115 140 % Vnom DC. Output 1 only, recycle input to reset Overload Protection 110 140 % I nom Output 1 only, auto reset (see fig. 5) Short Circuit Protection Continuous T emperature Coefficient 0.05 %/˚C Overtemperature Protection 75 °C Thermal sensor under PCB Models and Ratings Output Voltage Maximum Output Current Fan Output (2) Standby Supply Max Power 12.0 VDC 35.0 A 12 V/1 A 5 V/0.3 A 434 W MFA420PS12 24.0 VDC 17 .5 A 12 V/1 A 5 V/0.3 A 434 W MFA420PS24 48.0 VDC 8.8 A 12 V/1 A 5 V/0.3 A 436 W MFA420PS48 Notes 1. Units supplied with Molex connections for J1 & J2 as standard. Add suffix ‘-S’ to model number to replace with screw termina ls. Add suffix ‘-TF’ for covered version with top fan and suffix ‘-EF’ for covered version with end fan. Example:- MFA420PS12-STF , 12 V unit fitted with screw terminals and top fan. 2. Not available for -TF & -EF versions.

xppower.com Xxxxxxxxxx General Specifications Characteristic Minimum T ypical Maximum Units Notes & Conditions Efficiency 86 % Full load (see fig. 8 & 9) Isolation: Input to Output Input to Ground Output to Ground Switching Frequency: PFC Main Converter 78 kHz 120 kHz Power Density 11.1 W/in Mean Time Between Failure 420 kHrs MIL-HDBK-217F , Notice 2 +25 °C GB Weight 1.35 (612) lb (g) Characteristic Notes & Conditions Signals AC OK/Powerfail Open collector referenced to output 0V , transistor normally off when AC is good (see fig. 10, 16, 17 & 18) AC OK: Provides ≥ 5 ms warning of loss of output from AC failure DC OK Open collector referenced to 0 V , transistor normally off when DC is good (see fig. 11, 19 & 20). Provides warning of DC output failure Remote On/Off (Inhibit/Enable) Remotely switches outputs off, can also be configured as enable (see fig.12) Current Share Up to 3 supplies can be connected in parallel. Output current is shared within 10% at full load. Derate overall output current to 90% when used in parallel (see fig.13, 14 & 15) Remote Sense Compensates for 0.5 V total voltage drop Efficiency Versus Load MFA420PS12 - Efficiency against input voltage 72% 74% 76% 78% 80% 82% 84% 86% 88% 0 20 40 60 80 100 120 Load (%) Efficiency Figure 8 MFA420PS12 @ 230 VAC MFA420PS48 - Efficiency against input voltage 70% 72% 74% 76% 78% 80% 82% 84% 86% 88% 90% 0 20 40 60 80 100 120 Load (%) Efficiency Figure 9 MFA420PS48 @ 230 VAC

xppower.com Signals AC OK/Power Fail AC OK Collector Pin 1 AC OK Emitter Pin 7 POWER SUPPLY Transistor On (<0.8 V): AC NOT OK Transistor Off (>4.5 V): AC OK J3 Logic Connector 330R Transistor On (<0.8 V): DC NOT OK Transistor Off (>4.5 V): DC OK J3 Logic Connector 330R Pin 2Jumper (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 Internal Vref JP1 See page 12 Mechanical Details for location Remote On/Off (Inhibit) Figure 10 Figure 11 Figure 12

xppower.com Xxxxxxxxxx Signals Parallel Load & Current Share Connections - + - + - + - + V1 Output V1 Output V1 Output - Sense - Sense + Sense + Sense - Sens e + Sense Current Share Current Share PSU 1 PSU 2 PSU 3 Load Parallel Remote On/Off (Inhibit) Connection Parallel AC OK Connection (DC OK follows same format) Figure 13 Figure 14 Figure 15 PSU 1 PSU 2 PSU 3 Pin 2 Pin 7 Pin 2 Pin 7 Pin 2 Pin 7 J3 LOGIC CONNECTORS Jumper (JP1) fitted 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 AC OK Collector Pin 1 AC OK Emitter Pin 7 POWER SUPPLY 1 J3 Logic Connector 330R Transistor On (<0.8 V): AC NOT OK Transistor Off (>4.5 V): AC OK AC OK Collector Pin 1

xppower.com Xxxxxxxxxx Signals Figure 16 AC OK signal at AC switch on (taken from MFA350PS12) Figure 17 AC OK signal at AC switch off (taken from MFA350PS12) Figure 18 V1 warning time at AC OK signal

90 VAC full load

(taken from MFA350PS12) AC OK AC OK AC OK

xppower.com Xxxxxxxxxx Environmental Characteristic Minimum T ypical Maximum Units Notes & Conditions Operating T emperature -10 +70 °C Derate linearly from +50 °C at 2.5%/°C to 50% at 70 °C when forced cooled. See Thermal Considerations. Storage T emperature -20 +85 °C Cooling 13 CFM U Channel Version. -TF & -EF models have integral fan. See Thermal Considerations for U Channel. Humidity 5 95 %RH Non-condensing Operating Altitude 3000 m Shock 3 x 30 g/11 ms shocks in both +ve & -ve directions along the 3 orthogonal axis, total 18 shocks. Vibration Single axis 10-500 Hz at 2 g x 10 sweeps Electromagnetic Compatibility - Emissions Electromagnetic Compatibility - Immunity Phenomenon Standard T est Level Criteria Notes & Conditions Harmonic Current EN61000-3-2 Class A Class D EFT EN61000-4-4 3 A Surges EN61000-4-5 Installation Class 3 A Magnetic Immunity EN61000-4-8 Class 3 A Dips and Interruptions EN61000-4-11 30% 10 ms A 60% 100 ms B 100% 5000 ms B Phenomenon Standard T est Level Criteria Notes & Conditions Conducted EN55022 Class B See fig. 21 Radiated EN55022 Class A Voltage Fluctuations EN61000-3-3 Safety Agency Approvals Figure 21 Typical EMC Plot Safety Agency Safety Standard Category CB Report UL US/14622B/UL IEC60950-1:2005 Ed. 2 Information T echnology UL UL File #E139109 UL60950-1 (2005) 2nd Edition Information T echnology TUV TUV Certificate #B 1101 57396 087 EN60950-1/A11:2009 Information T echnology CE LVD

5.80 (147.30) 6.80 (172.72) 0.80 (2.02) 2.00 (50.79) 2.00 (50.79) 0.60 (15.20) AIRFLOW 2.00 (50.80) 3.32 (84.50) 0.66 (16.80) 3.32 (84.50) AC Input Interface connector V1(+) V1(-) Logic Connector Voltage Adjust Output Interface Connector 4 x M3-0.5 Mounting Thread 0.236 (6.0) Max Screw Penetration bottom side of xppower.com 3.20 (81.3) 1.50 (38.1) 3.20 (81.3) AIRFLOW 2 x 2.00 (50.8) 2 x 0.60 (15.3) 6.80 (172.7) AC INPUT INTERFACE CONN 2 x 0.60 (15.2) 2 x 1.50 (38.1) 2 x 0.75 (19.1) 2 x 0.60 (15.2) 2 x 6.80 (172.7) 2 x 5.80 (147.3) 2 x 5.80 (147.3) LOGIC CONNECTOR VOLTAGE ADJUST DC OUTPUT INTERFACE CONNECTOR V1(+) V1(-) 8 X M3-0.5 MOUNTING THREAD 0.236 (6.0) MAX SCREW PENETRATION TYP ON ALL SIDES OF POWER SUPPLY Max Torque 4.0-5.0 in-lb (0.045 - 0.057 kg-m) AA A A A A BR1 D35 AA JP1 (ENABLE) FAN CONNECTOR V2 C63 Notes 1. All dimensions in inches (mm). Mechanical Details U Channel Version Top Fan Version (Suffix TF)

xppower.com AIRFLOW 8.28 (210.31) 1.75 (44.45) 4.00 (10.16) V1(+) V1(-) Logic Connector Voltage Adjust Output Interface Connector 0.08 (2.03) 0.66 (16.84) 1.37 (34.92) 2.00 (50.80) 1.75 (44.45) 6.80 (172.70) 8.20 (208.28) 3.32 (84.48)3.32 (84.47) 1.75 (44.45) AC Input Interface Connector 5 x M3-0.5 Mounting Thread 0.236 (6.0) Max Screw Penetration bottom side of power supply. Max Torque 4.5-5.0 in-lb (0.045-0.057 kg-m) 0.60 (15.20) 8.20 (208.28) 7.20 (182.88) 5.80 (147.32) PIN CONNECTIONS LOGIC CONNECTOR J3 JST B10B-PHDSS (LF) (SN) Mechanical Details - Pin Connections PIN CONNECTIONS AC INPUT J1 Molex 26-60-4050 Mating Parts: Molex 09-50-3051 or Housing 43061-0005 Contact 08-70-1030 Option ‘-S’ screw terminals Phoenix Contact: MKDS 1/5-3.81 or similar accepts 26-16 AWG wire (contacts 2 & 4 removed) Max T orque 1.73 in-lb (0.02 kg-m) Mating Parts: Molex 09-50-3101 or Housing 43061-0010 Contact 08-70-1030 Option ‘-S’ screw terminals 2 x Phoenix Contact: MKDS 1/5-3.81 or similar accepts 26-16 AWG wire Max T orque 1.73 in-lb (0.02 kg-m) Mating Parts: JST Housing PHDR-10VS Contact SPHD-001T -P0.5 Mating Parts: Molex Housing 22-01-1024 Contact 08-70-0057 Notes 1. All dimensions in inches (mm). Mechanical Details End Fan Version (Suffix EF)

xppower.com 09-May-12 Thermal Considerations (U Channel) In order to ensure correct and reliable operation of the PSU in the most adverse conditions permitted in the end-use equipment, the temperature of the components listed in the table below must not be exceeded. See drawing on page 12 for component locations. Temperature should b e monitored using K type thermocouples placed on the hottest part of the component (out of any direct air flow). Temperature Measurements (Ambient ≤ 50 ºC) Component Max Temperature ºC T3 90 °C BR1 105 °C D35 85 °C L3 90 °C