EMH Series • 250 W & 350 W Forced-cooled • Industry Standard 3”x 5”x 1.43”Format • IT & Medical (BF) Approvals • 80 V - 275 VAC Operation • Optional ORing Diode (EMH350D Models) • Analog & PMBus Signals Options (EMH350) • 5 V Standby (EMH350) • 3 Year Warranty The EMH series of ultra compact high power density supplies deliver 250 W and 350W within the industry standard 3” x 5” (76mm x 127mm) footprint. They achieve this very high power density with a minimal 12 CFM forced air requirement and a profile of just 1.4” (36 mm) making them suitable for 1U and a host of other applications. All models feature a main output and 12V/0.6A fan supply output along with IEC60950 (IT) and IEC60601 BF (Medical) family safety approvals, thus including patient contact equipment in the wide range of possible applications. The EMH350 has a 5V/2A standby rail and can be supplied with a range of optional analogue and digital, PMBus compatible signals as well as a variable speed fan & cover. The EMH350D models have built in Oring diodes for use in redundant applications. xppower.com and Ratings Models & Ratings Output Voltage V1 12 V 18 V 24 V 48 V Output Current V1 21.0 A 14.0 A 10.5 A 5.2 A Fan Supply V3(1) 12 V/0.6 A 12 V/0.6 A 12 V/0.6 A 12 V/0.6 A Output Voltage V1 12 V 18 V 24 V 48 V Output Current V1 29.2 A 19.5 A 14.6 A 7.3 A Standby Supply V2 5.0 V / 2.0 A 5.0 V / 2.0 A 5.0 V / 2.0 A 5.0 V / 2.0 A Output Voltage V1 12 V 18 V 24 V 48 V Output Current V1 29.2 A 19.5 A 14.6 A 7.3 A Standby Supply V2 5.0 V / 2.0 A 5.0 V / 2.0 A 5.0 V / 2.0 A 5.0 V / 2.0 A Output Power 252 W 252 W 252 W 250 W Model Number(1) EMH250PS12 EMH250PS18 EMH250PS24 EMH250PS48 Fan Supply V3(2) 12 V/0.6 A 12 V/0.6 A 12 V/0.6 A 12 V/0.6 A Output Power 354 W 354 W 355 W 354 W Model Number(2) EMH350PS12 EMH350PS18 EMH350PS24 EMH350PS48 Fan Supply V3 12 V/0.6 A 12 V/0.6 A 12 V/0.6 A 12 V/0.6 A Output Power 354 W 354 W 355 W 354 W Model Number(3) EMH350PS12D EMH350PS18D EMH350PS24D EMH350PS48D Notes: 1. The EMH250 is available with a top mounted fan cover option. Add suffix ‘-TF’ to model number e.g. EMH250PS12-TF. See mechanical drawing later in this datasheet. The fan supply V3 is no longer available with this option as it is used to drive the fan. 2. The EMH350 is available with various analog, digital signal and cover options. See availability table and mechanical drawing later in this datasheet. The fan supply V3 is no longer available with cover options as it is used to drive the fan. 3. The EMH350D models are fitted with an integral ORing diode and are also available with various analog and digital signal options. See availability table and mechanical drawing later in this datasheet. Input Characteristics Characteristic Minimum Typical Maximum Units Notes & Conditions Input Voltage - Operating 80 115/230 275 VAC Derate output power < 90 VAC. See fig. 1 Input Frequency 47 50/60 63 Hz >0.9 Power Factor EN61000-3-2 class A compliant Input Current - No Load 0.05/0.03 A 115/230 VAC Input Current - Full Load 2.6/1.3 3.7/1.8 A 115/230 VAC - EMH250 115/230 VAC - EMH350 A 230 VAC cold start, 25 °C W EMH250 EMH350 EMH350 with output inhibit (via signal option) µA 115/230 VAC/50 Hz (Typ.), 264 VAC/60 Hz (Max.) Inrush Current 40 5.8 6.4 1.0 No Load Input Power Earth Leakage Current Input Protection 90/160 F10 A/250 V internal fuse in both lines 250 Derating Curve - All EMH250 & EMH350 models Figure 1 100 Output Power (%) 90 80 70 60 50 40 80 85 275 90 Input Voltage (VAC) 2 xppower.com Output Characteristics Characteristic Minimum Output Voltage - V1 Typical Units 48 VDC ±1 V1, ±5 V2 % 50% load, 115/230 VAC, V2 EMH350 only ±10 V1 % Via potentiometer & PMBus control 0 A Initial Set Accuracy Output Voltage Adjustment Minimum Load Notes & Conditions Maximum 12 See Models and Ratings table Start Up Delay 1 s Hold Up Time 16 ms 230 VAC full load (see fig. 2, 3 & 4.) 115 VAC full load (see fig. 5.) After 20 min warm up Drift ±0.2 % Line Regulation ±0.5 % 90-264 VAC Load Regulation ±1 V1, ±5 V2 % 0-100% load, V2 EMH350 only 4 % Recovery within 1% in less than 500 µs for a 50-75% and 75-50% load step 1 % pk-pk Transient Response - V1 Over/Undershoot - V1 2 Ripple & Noise % 20 MHz bandwidth (see fig. 6 & 7.) Overvoltage Protection 115 140 % Overload Protection 110 150 % I nom 0.05 %/˚C °C Fitted, auto recovery 100 µA 264 VAC/60 Hz Short Circuit Protection Vnom DC. Auto reset, knee point adjustable via PMBus control (see fig.8) EMH350-50 only Fitted Temperature Coefficient Overtemperature Protection Patient Leakage Current Start up delay from AC turn on Figure 2 V1 Start up example (115 VAC, 686 ms) V1 AC Figure 3 V3 Fan supply example (115 VAC, 530 ms) V3 AC 3 xppower.com Output Characteristics Figure 4 V2 Standby Supply example (115 VAC, 75 ms) EMH350 only V2 AC Hold up time from loss of AC Figure 5 V1 Hold up time example (115 VAC, 22 ms) V1 AC Output Ripple & Noise Figure 6 EMH350PS12, 350 W, (87 mV pk-pk ripple, 20 MHz bandwidth) V1 4 xppower.com Output Characteristics Figure 7 EMH350PS24 350 W (85 mV pk-pk ripple, 20 MHz bandwidth) V1 Overload Characteristics Figure 8 Typical Overload Characteristics (EMH350PS12 shown) Current limit adjustable via PMBus control, EMH350-50 only 14.00 12.00 Voltage (V) 10.00 8.00 6.00 4.00 2.00 0.00 1 2 3 4 5 34 35 36 37 38 39 40 Current (A) 5 xppower.com General Specifications Characteristic Minimum Typical Maximum Isolation: Input to Output Input to Ground Output to Ground % 4000 VAC 1500 VAC 1500 VAC Switching Frequency 62-560 / 71 / 50-130 16.3 Weight Full load (see fig. 9 & 10) PFC / Main Converter / Standby Converter kHz Power Density Mean Time Between Failure Notes & Conditions Units 87 Efficiency W/in3 400 kHrs 0.9 (410) 1.0 (450) lbs (g) MIL-HDBK-217F, Notice 2 +25 °C GB EMH250 & EMH350, EMH350D Efficiency Versus Load 100% Figure 9 EMH350PS12 90% 80% 115 V Efficiency 70% 230 V 60% 50% 40% 30% 20% 10% 0% 0 10 20 30 40 50 60 70 80 90 100 100% Figure 10 EMH350PS48 90% 80% 115 V Efficiency 70% 230 V 60% 50% 40% 30% 20% 10% 0% 0 6 10 20 30 40 50 60 70 80 90 100 xppower.com Xxxxxxxxxx Environmental Characteristic Minimum Maximum Units 0 +70 °C Storage Temperature -40 +85 °C Cooling 12 Humidity Operating Altitude 5 Operating Temperature Typical CFM 95 3000 %RH m Notes & Conditions Derate linearly from +50 °C at 2.5%/°C to 50% at 70 °C. (See Thermal Considerations) Forced-cooled, see Thermal Considerations & Mechanical details Non-condensing Shock 3 x 30 g/11 ms shocks in both +ve & -ve directions along the 3 orthogonal axis, total 18 shocks. Vibration Three axis 5-500 Hz at 2 g x 10 sweeps Electromagnetic Compatibility - Emissions Phenomenon Conducted Radiated Voltage Fluctuations Standard EN55011/22 EN55011/22 EN61000-3-3 Test Level Class B Class A Criteria Notes & Conditions See EMC report Electromagnetic Compatibility - Immunity Phenomenon Low Voltage PSU EMC Harmonic Current Radiated EFT Surges Conducted Standard EN61204-3 EN61000-3-2 EN61000-4-3 EN61000-4-4 EN61000-4-5 EN61000-4-6 EN61000-4-11 Dips and Interruptions EN60601-1-2 (EN61000-4-11) Test Level High severity level Class A 3 3 Installation class 3 3 Dip: 30% 10 ms Dip: 60% 100 ms Dip: 100% 5000 ms Dip: 30% 500 ms Dip: Criteria as below Notes & Conditions A A A A A B B A 60% 100 ms A Dip: 100% 10 ms Int.: >95% 5000 ms A B Requires load derating to approx 50% with 100 VAC input. Safety Agency Approvals Safety Agency Safety Standard Category CB Report UL Cert #US/TBA/UL, IEC60950-1:2005 Ed 2 Information Technology UL UL File # E139109-AXX-UL, UL60950-1 (2007), CSA 22.2 No.60950-1-07 Ed 2 Information Technology TUV TUV Certificate # TBA, EN60950-1:2006 Information Technology CE LVD Safety Agency Safety Standard Category CB Report Certificate #US/18274/UL, IEC60601-1 Ed 3 Including Risk Management Medical UL UL File # E146893, ANSI/AAMI ES 60601-1:2005 & CSA C22.2 No. 60601-1:08 Medical TUV TUV EN60601-1:2006 Medical Primary to Secondary 2 x MOPP (Means of Patient Protection) Means of Protection Category Primary to Earth 1 x MOPP (Means of Patient Protection) Secondary to Earth 1 x MOPP (Means of Patient Protection) Equipment Protection Class Safety Standard Notes & Conditions IEC60950-1:2005 Ed 2 & IEC60601-1 Ed 3 See safety agency conditions of acceptability for details Class I & BF IEC60601-1 Ed 3 7 xppower.com Signals Signal Functions Available Model Remote OK/Power Fan Supply 5 V Standby AC Fail Sense EMH250PSXX EMH350PSXX EMH350PSXX-01 EMH350PSXX-02 EMH350PSXX-50 EMH350PSXXD EMH350PSXXD-01 EMH350PSXXD-50 P P P P P P P P P P P P P P P P Characteristic P P P P P P P Inhibit V1 & V Fan Optional Cover Availability Speed Current Share Variable Fan Control P P P P P P P P P Standard Top Fan (-TF) PMBus Variable Speed Top Fan (-VF) P P P P P P P P Notes & Conditions Signals & Control Remote Sense Compensates for 0.5 V total voltage drop 12 V Fan Supply (V3) 12 V/0.6 A supply, present when AC supplied, inhibit turns fan supply off. 5V Standby (V2) 5 V/2 A supply, always present when AC supplied AC OK/Power Fail AC OK is an open collector transistor, referenced to negative output, providing a minimum of 3 ms warning of loss of output regulation. The transistor is normally on when AC is healthy. See fig. 11. Inhibit The inhibit high pin should be pulled below 0.4 V to switch V1 & V Fan (V3) off. Open circuit or 2-8 V maximum to switch the output on. See fig.12. Current Share Connecting pin 9 (-01 & -02 models) of like voltage units (3 maximum) will force the current to share between the outputs. Units share current within 10% of each other at full load. See fig. 13. Variable Speed Fan Control When used in conjuction with -VF fan cover, varies the speed of the internal fan depending on temperature of the unit. See fig. 15. I2C/PMBus The I2C PMBus compatible interface can be used for monitoring the unit output voltage, current, internal temperature, external 3 wire TACHO fan and run time. Adjustment of the output voltage and current limit set point and identification of the unit model number and serial number are also possible. Consult sales for further information and application notes. AC OK Power Fail Inhibit Parallel & Current Share (EMH350 recommended connection) POWER SUPPLY 5 V Standby Pin 3 or 4 - 1K + Current Share Se ns e Inhibit Lo Pin 8 (-sense) V1 Output + + Sense + - se en -S Transistor On (<0.8 V): AC OK Transistor Off (>4.5 V): AC NOT OK/Power Fail 5V Standby return pin 1 or 2 J2 Logic Connector Signals Connector - + Load 8 EMH350PSXX (3) EMH350PSXX (2) V1 Output Inhibit Hi Pin 10 AC OK Collector Pin 11 AC OK Emitter -VE output EMH350PSXX (1) V1 Output - Current Share -S se en + POWER SUPPLY Max 30 V 10 mA Figure 13 Se ns e Figure 12 - Sense Figure 11 + xppower.com Signals Redundancy N+1 EMH350PSXXD (1) (EMH350 recommended connection) EMH350PSXXD (3) EMH350PSXXD (2) V1 Output V1 Output - + - + - + V1 Output - + Figure 14 Load Fan Speed Graph 100 90 Fan Speed (%) Figure 15 80 70 60 50 40 30 20 10 0 20 10 0 Mechanical Details 30 H/Sink Temp °C 40 50 60 EMH250 5.0 (127.0) 0.22 (5.7) Signals Connector* 4.55 (115.6) Output Connector Center Line Output Adjust Recommended Airflow Direction 2.55 (64.8) C5 Input Terminal Block Center Line -V1 Con 3 0.65 (16.7) (pin 1) L E +V1 Con 2 T1 L N E N 0.73 (18.6) C3 3.0 (76.2) 0.90 (23.0) M3 mounting holes in 4 positions Input Terminal Block CON 1 D5 0.22 (5.7) Output Terminals M4 Pan HD screws in 2 positions Torque to 8 lbs-in (90 cNm) max Output Connector Center Line 0.35 (9.1) 1.43 (36.3) *Signals Connector TOP VIEW Input Connector CON 1 TYCO part # 640445-5 Pin 1 Line Pin 3 Neutral Pin 5 Earth Output Connector Con 2 +V1 Con 3 -V1 1. Dimensions shown in inches (mm). Tolerance: ±0.02 (±0.5) N/C Fan -VE N/C (pin 1) N/C Fan +VE -VE Sense + VE Sense (pin 10) N/C N/C (pin 9) Signals Connector 10 way 2 mm pitch p/n JST BI0B-PHDSS Mating Half - p/n JST PHDR-10VS, Contact- 26-22 AWG p/n JST SPHD-001T-P0.5 Pin 2 & 4 removed Notes (pin 2) N/C Mates with Tyco SL-156 Series Connector 2. Weight: 0.90 lb (410 g). 9 xppower.com Xxxxxxxxxx Details Mechanical EMH350 5.0 (127.0) Signals Connector* Output Connector Center Line Recommended Airflow Direction Output Adjust C5 (pin 1) L N 0.73 (18.6) E 3.0 (76.2) -V1 Con 3 Output Terminals M4 Pan HD screws in 2 positions Torque to 8 lbs-in (90 cNm) max 0.65 (16.7) +V1 Con 2 T1 L N E 0.90 (23.0) 0.22 (5.7) M3 mounting holes in 4 positions Input Terminal Block CON 1 C3 2.55 (64.8) Input Terminal Block Center Line 0.22 (5.7) Output Connector Center Line D5 (pin 2) +VE Standby -VE Standby Fan -VE -VE Sense 1.43 (36.3) (pin 10) N/C Output Connector 0.35 (9.1) 4.55 (115.6) +VE Standby (pin 1) CON 2 +V1 CON 3 -V1 -VE Standby Fan +VE Input Connector CON 1 TYCO part # 640445-5 + VE Sense N/C (pin 9) *Signals Connector Top View Signals Connector 10 way 2 mm pitch p/n JST BI0B-PHDSS Mating Half - p/n JST PHDR-10VS, Contact- 26-22 AWG p/n JST SPHD-001T-P0.5 1 Line 3 Neutral 5 Earth Pins 2 & 4 removed Mates with Tyco SL-156 Series Connector EMH350 (Signal Options) 5 5.0 (127.0) Signals Connector* Pin 1 Output Connector Center Line Voltage Adjust Recommended Airflow Direction 2.55 (64.8) Input Terminal Block Center Line 3.0 (76.2) -V1 Con 3 0.65 (16.7) (pin 1) L +V1 Con 2 N 0.73 (18.6) E 0.22 (5.7) 0.90 (23.0) Output Connector Center Line M3 mounting holes in 4 positions Input Terminal Block CON 1 0.22 (5.7) 0.35 (9.1) 4.55 (115.6) 1.43 (36.3) Pin 11 Pin 12 Pin 9 Pin 10 Pin 7 Pin 8 Pin 5 Pin 6 Pin 3 Pin 4 Pin 1 Pin 2 Signals Connector 12 way 2 mm pitch p/n JST S12B-PHDSS Mating Half - p/n JST PHDR-12VS, Contact- 26-22 AWG p/n JST SPHD-001T-P0.5 Notes 1. Dimensions shown in inches (mm). Tolerance: ±0.02 (±0.5) 10 Output Terminals M4 Pan HD screws in 2 positions Torque to 8 lbs-in (90 cNm) max 2. Weight: 0.9 lb (410 g). EMH350PSXX-01 & EMH350PSXX-02 1 -VE Standby 2 -VE Standby 3 +VE Standby 4 +VE Standby 5 +VE Fan Supply 6 -VE Fan Supply 7 +VE Sense 8 -VE Sense 9 Current Share 10 Inhibit 11 Power Fail 12 N/C EMH350PSXX-50 1 -VE Standby 2 -VE Standby 3 +VE Standby 4 +VE Standby 5 +VE Fan Supply 6 -VE Fan Supply 7 +VE Sense 8 -VE Sense 9 Fan Tacho Input 10 I2C GND 2 11 I C Data 12 I2C Clock xppower.com Xxxxxxxxxx Details Mechanical EMH350D 5.75 ±0.02 (146.0 ±0.5) Signals Connector* Output Connector Center Lines Output Adj. C5 Recommended Airflow 2.55 Direction (64.8) 3.00 ±0.02 (76.2 ±0.5) (pin 1) L T1 N 0.73 (18.6) -V1 Con 3 Output Terminals M4 Screw in 2 positions Torque to 8 lbs-in (90 cNm) max. 0.72 (18.3) +V1 Con 2 0.91 (23.1) E Input Terminal Block, Center Line M3 mounting holes in 4 positions Input Terminal Block CON 1 D5 4.55 (115.6) Output Connector Center Lines 0.22 (5.7) 0.35 (9.1) 0.97 (24.7) (pin 2) +VE Standby +VE Standby (pin 1) -VE Standby Fan -VE 1.43 ±0.02 (36.3 ±0.5) Output Connector -VE Standby -VE Sense (pin 10) N/C Fan +VE CON 2 +V1 + VE Sense CON 3 -V1 N/C (pin 9) Input Connector CON 1 TYCO part # 640445-5 *Signals Connector Top View Signals Connector 10 way 2 mm pitch part number JST B10B-PHDSS, Mating half part number JST PHDR-10VS, Contact 26-22 AWG part number JST SPHD-001T-P0.5 1 Line 3 Neutral 5 Earth Pins 2 & 4 removed Mates with Tyco SL-156 Series Connector EMH350D (Signal Options) 5.75 ±0.02 (146.0 ±0.5) *Signal Connector Pin 1 Recommended Airflow Direction Output Connector Center Lines Recommended Airflow 2.55 Direction (64.8) 3.00 ±0.02 (76.2 ±0.5) -V1 Con 3 0.72 (18.3) (pin 1) L +V1 Con 2 N 0.73 (18.6) Input Terminal Block, Center Line Output Adj. 0.91 (23.1) E M3 mounting holes in 4 positions 0.22 (5.7) Output Connector Center Lines Input Terminal Block 4.55 (115.6) Output Terminals M4 Screw in 2 positions Torque to 8 lbs-in (90 cNm) max. 0.35 (9.1) 0.97 (24.7) 1.43 ±0.02 (36.3 ±0.5) Pin 11 Pin 12 Pin 9 Pin 10 Pin 7 Pin 8 Pin 5 Pin 6 Pin 3 Pin 4 Pin 1 Pin 2 Signals Connector 12 way 2 mm pitch p/n JST S12B-PHDSS Mating Half - p/n JST PHDR-12VS, Contact- 26-22 AWG p/n JST SPHD-001T-P0.5 EMH350PSXXD-01 1 -VE Standby 2 -VE Standby 3 +VE Standby 4 +VE Standby 5 +VE Fan Supply 6 -VE Fan Supply 7 +VE Sense 8 -VE Sense 9 Current Share 10 Inhibit 11 Power Fail 12 N/C EMH350PSXXD-50 1 -VE Standby 2 -VE Standby 3 +VE Standby 4 +VE Standby 5 +VE Fan Supply 6 -VE Fan Supply 7 +VE Sense 8 -VE Sense 9 Fan Tacho Input 10 I2C GND 11 I2C Data 12 I2C Clock Notes 1. Dimensions shown in inches (mm). Tolerance: ±0.02 (±0.5) 2. Weight: 1.0 lbs (450 g). 11 xppower.com Xxxxxxxxxx Details Mechanical Top Fan - EMH250-TF & EMH350-TF M3 mounting holes in 4 positions Max. penetration by screw to be 0.157 (4.0) from outside face of chassis 5.00 ±0.02 (127.0 ±0.5) Signals Connector* Input Terminal Block, Center Line 3.56 ±0.02 (90.4 ±0.5) 1.01 (25.6) Input Terminal Block CON 1 -V1 Con 3 1.84 (46.8) (pin 1) L N E +V1 Con 2 1.19 (30.1) 0.79 (19.9) M3 mounting holes in 2 positions Max. penetration by screw to be 0.157 (4.0) from outside face of chassis 1.96 (50.0) Output Terminals M4 Screw in 2 positions Torque to 8 lbs-in (90 cNm) max. 0.76 (20.2) 0.75 (19.1) 2.78 ±0.02 (70.5 ±0.5) (pin 2) +VE -VE Fan -VE 0.97 (24.8) 0.75 (19.1) 3.50 (88.9) +VE (pin 1) -VE Fan +VE -VE Sense +VE Sense (pin 9) N/C N/C (pin 10) 3.50 (88.9) Signals Connector Signals Connector 10 way 2 mm pitch part number JST B10B-PHDSS Mating half part number JST PHDR-10VS Contact 26-22 AWG part number JST SPHD-001T-P0.5 Top Fan with Signals Options - EMH350-01TF, EMH350-50TF & EMH350-02VF 5.00 ±0.02 (127.0 ±0.5) Signals Connector* Pin 1 3.56 ±0.02 (90.4 ±0.5) Input Terminal Block, Center Line 1.01 (25.6) (pin 1) L N E Input Terminal Block CON 1 -V1 Con 3 1.84 (46.8) +V1 Con 2 1.19 (30.1) M3 mounting holes in 2 positions Max. penetration by s crew to be 0.157 (4.0) from outside face of chassis M3 mounting holes in 4 positions. Max. penetration by screw to be 0.157 (4.0) from outside face of chassis Output Terminals M4 Screw in 2 positions Torque to 8 lbs-in (90 cNm) max. 0.76 (20.2) 0.75 (19.1) 0.79 (19.9) 1.96 (50.0) 3.50 (88.9) EMH350PSXX-01TF & EMH350PSXX-02VF 2.78 ±0.02 (70.5 ±0.5) 0.97 (24.8) 0.75 (19.1) 3.50 (88.9) Pin 11 Pin 12 Pin 9 Pin 10 Pin 7 Pin 8 Pin 5 Pin 6 Pin 3 Pin 4 Pin 1 Pin 2 Signals Connector 12 way 2 mm pitch p/n JST S12B-PHDSS Mating Half - p/n JST PHDR-12VS, Contact- 26-22 AWG p/n JST SPHD-001T-P0.5 Notes 1. Dimensions shown in inches (mm). Tolerance: ±0.02 (±0.5) 12 2. Weight: 1.67 lbs (760 g). 1 -VE Standby 3 +VE Standby 5 +VE Fan Supply 7 +VE Sense 9 Current Share 11 Power Fail 2 -VE Standby 4 +VE Standby 6 -VE Fan Supply 8 -VE Sense 10 Inhibit 12 N/C EMH350PSXX-50TF 1 -VE Standby 2 -VE Standby 3 +VE Standby 4 +VE Standby 5 +VE Fan Supply 6 -VE Fan Supply 7 +VE Sense 8 -VE Sense 9 Fan Tacho Input 10 I2C GND 2 11 I C Data 12 I2C Clock xppower.com Xxxxxxxxxx Thermal Considerations 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. Temperature should be monitored using K type thermocouples placed on the hottest part of the component (out of any direct air flow). See mechanical drawings for component locations. The service life of the power supply is largely determined by the temperature of the electrolytic capacitors during normal operation and therefore to achieve the optimum lifetime, it is recommended to reduce the temperatures shown by approximately 30 °C. Temperature Measurements (Ambient ≤ 50 °C) Component Max Temperature ºC D5 case 110 °C C5 105 °C C3 105 °C T1 coil 120 °C Service Life (U Channel Versions) The estimated service life of the EMH Dual Series is determined by the cooling arrangements and load conditions experienced in the end application. Due to the uncertain nature of the end application this estimated service life is based on the actual measured temperature of a key capacitor within the product when installed in the end application. The graph below expresses the estimated lifetime for a given component temperature and assumes continuous operation at this temperature. Estimated Service Life vs Component Temperature 120000 Lifetime (Hrs) 100000 80000 60000 40000 20000 0 105 95 85 75 65 55 C5 C6 Temperature (°C) Temperature (°C) 8 Sept 16 EMH Dual Output Series • 350 W Forced-Cooled Dual Output • Industry Standard 4”x 6”x 1.43”Format • IT & Medical (BF) Approvals • 80 V - 275 VAC Operation • Analog & PMBus Signals Options (EMH350) • 5 V Standby • Outputs upto 120 VDC • 3 Year Warranty The EMH350 Dual Output series provides two high current outputs in a industry standard 6" x 4" footprint. Available both in U channel and integrally cooled end fan versions the EMH dual series can be fitted into 1U and configured to provide single outputs upto 120 VDC. All models feature two isolated outputs, plus and additional 12V/0.6A fan supply and 5V/2A standby supply complimented with a range of optional analogue, digital and PMBus signals and controls. With safety approvals that cover both IEC60950 (IT) and IEC60601 BF (Medical) the EMH350 dual series is suitable for a wide range of industrial and medical applications including patient contact. xppower.com and Ratings Models & Ratings Output Voltage V1 Output Current V1 Output Voltage V2 Output Current V2 Standby Supply Fan Supply V3 Maximum Output Power Model Number(1) 12 V 16.5 A 24 V 8.3 A 5.0 V/2.0 A 12 V/0.6 A 354 W EMH350PD21-U 12 V 16.5 A 36 V 5.5 A 5.0 V/2.0 A 12 V/0.6 A 354 W EMH350PD22-U 12 V 16.5 A 48 V 4.2 A 5.0 V/2.0 A 12 V/0.6 A 355 W EMH350PD23-U 24 V 8.3 A 48 V 4.2 A 5.0 V/2.0 A 12 V/0.6 A 354 W EMH350PD24-U 60 V 3.3 A 60 V 3.3 A 5.0 V/2.0 A 12 V/0.6 A 354 W EMH350PD25-U Notes: 1. For integral end fan version, replace ‘-U’ in model number with ‘- EF’ 2. Output voltages to 120 VDC possible with series output connection contact sales. Input Characteristics Characteristic Minimum Typical Maximum Units Notes & Conditions Input Voltage - Operating 80 115/230 275 VAC Derate output power < 90 VAC. See fig. 1 Input Frequency 47 50/60 63 Hz >0.9 Power Factor Input Current - No Load Input Current - Full Load Inrush Current No Load Input Power Earth Leakage Current Input Protection EN61000-3-2 class A compliant 0.05/0.03 3.6/1.8 40 1.0 90/160 F10 A/250 V internal fuse in both lines 250 A A A W µA 115/230 VAC 115/230 VAC - EMH350 230 VAC cold start, 25 °C With output inhibit (via signal option) 115/230 VAC/50 Hz (Typ.), 264 VAC/60 Hz (Max.) Input Voltage - Derating Curve Figure 1 100 Output Power (%) 90 80 70 60 50 40 80 85 275 90 Input Voltage (VAC) 2 xppower.com Output Characteristics Characteristic Minimum Output Voltage - V1 Typical 12 Initial Set Accuracy Output Voltage Adjustment Maximum Units Notes & Conditions 120 VDC See Models and Ratings table ±1 V1, ±5 V2 % 50% load, 115/230 VAC ±10 V1 % Via potentiometer & PMBus control, V2 will track 0 A Minimum Load Start Up Delay 1 s Hold Up Time 16 ms 230 VAC full load (see fig. 2, 3 & 4.) 115 VAC full load (see fig. 5.) After 20 min warm up Drift ±0.2 % Line Regulation ±0.5 % 90-264 VAC Load Regulation ±1 V1, ±5 V2 % 0-100% load, V2 EMH350 only Cross Regulation See regulation curves (see fig. 2-5) Transient Response - V1 4 % Recovery within 1% in less than 500 µs for a 50-75% and 75-50% load step 1 % pk-pk Over/Undershoot - V1 2 % Ripple & Noise 20 MHz bandwidth (see fig. 6 & 7.) Overvoltage Protection 115 140 % Overload Protection 110 150 %W 0.05 %/˚C °C Fitted, auto recovery 100 µA 264 VAC/60 Hz Short Circuit Protection Vnom DC. Primary power limit V1 & V2 output power combined. (see fig. 6) Continuous Temperature Coefficient Overtemperature Protection Patient Leakage Current Regulation Curves Figure 2 - EMH350PD21 26 V2 Load Regulation V2 4.15A (50%) Load V2 8.3A (100%) Load V2 Output Voltage 25.5 25 24.5 V1 8.25A (50%) Load V1 16.5A (100%) Load 24 23.5 23 22.5 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 16.5 V2 Output Voltage V2 Cross Regulation 25 24.5 24 23.5 23 22.5 22 21.5 21 20.5 V1 Load (A) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 8.3 V2 Load (A) Figure 3 - EMH350PD22 V2 Cross Regulation 35 34 V2 2.75A (50%) Load 33 V2 5.5A (100%) Load 32 31 V1 Load (A) V2 Output Voltage 36 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 16.5 V2 Output Voltage 37 50 45 40 35 30 25 20 15 10 5 0 V2 Load Regulation V1 8.25A (50%) Load V1 16.5A (100%) Load 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 5.5 V2 Load (A) 3 xppower.com Regulation Curves Figure 4 - EMH350PD23 V2 Load Regulation 56 V2 2.1A (50%) Load V2 4.2A (100%) Load 54 V2 Output Voltage 50 49 48 47 46 45 44 43 42 41 40 52 50 V1 8.25A (50%) Load 48 V1 16.5A (100%) Load 46 44 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 16.5 V2 Output Voltage V2 Cross Regulation 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 V1 Load (A) 1 2 3 4 4.2 V2 Load (A) Figure 5 - EMH350PD24 49.5 49 48.5 48 47.5 47 46.5 46 45.5 45 V2 Load Regulation 58 56 V2 2.1A (50%) Load V2 4.2A (100%) Load 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 V2 Output Voltage V2 Output Voltage V2 Cross Regualtion 54 52 V1 8.3A (100%) Load 48 46 44 8 8.3 V1 4.15A (50%) Load 50 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 V2 Load (A) V1 Load Overload Characteristics Figure 6 Typical Overload Characteristics 24 22 V2 20 Voltage (V) 18 16 14 12 V1 10 8 6 4 2 0 4 2 4 6 8 10 Current (A) 12 14 16 18 20 2 3 4 4.2 xppower.com General Specifications Xxxxxxxxxx Characteristic Minimum Typical Efficiency Maximum 87 Units Notes & Conditions % Full load (see fig. 7) 4000 Isolation: Input to Output Input to Ground Output to Ground V1 to V2 Output 1500 VAC 1500 80 VDC Switching Frequency 62-560 / 71 / 50-130 Power Density 16.3 Mean Time Between Failure Weight PFC / Main Converter / Standby Converter kHz W/in3 MIL-HDBK-217F, Notice 2 +25 °C GB 400 kHrs 1.6 (730) 2.2 (1003) lbs (g) U Models EF Models Efficiency Versus Load Figure 7 EMH350PD21 100% 90% 80% 115 V Efficiency 70% 230 V 60% 50% 40% 30% 20% 10% 0% 0 10 20 30 40 50 60 70 80 90 100 Load % Environmental Characteristic Maximum Units 0 +70 °C Storage Temperature -40 +85 Cooling 16 Humidity Operating Altitude 5 Operating Temperature Minimum Typical Derate linearly from +50 °C at 2.5%/°C to 50% at 70 °C. (See Thermal Considerations) °C CFM 95 3048 Notes & Conditions %RH m Forced-cooled, see Thermal Considerations & Mechanical details Non-condensing Shock ±3 x 30g shocks in each plane, total 18 shocks. 30g = 11ms (+/-0.5msec), half sine. Conforms to EN60068-2-27 & EN60068-2-47 Vibration Single axis 10 - 500 Hz at 2g sweep and endurance at resonance in all 3 planes. Conforms to EN60068-2-6 5 xppower.com Electromagnetic Compatibility - Emissions Phenomenon Conducted Standard EN55011/22 Test Level Class B Radiated EN55011/22 Class A Voltage Fluctuations Criteria Notes & Conditions AC input cable fitted with Würth Electronik ferrrite core (3 turns), Part No.742-700-56. See EMC report for details. EN61000-3-3 Electromagnetic Compatibility - Immunity Phenomenon Standard Test Level Criteria EN61204-3 High severity level as below Harmonic Current EN61000-3-2 Class A Radiated EN61000-4-3 3 A EFT EN61000-4-4 3 A Surges EN61000-4-5 Installation class 3 A Conducted EN61000-4-6 Low Voltage PSU EMC EN55024 (100 VAC) EN55024 (240 VAC) Dips and Interruptions EN60601-1-2 (100 VAC) EN60601-1-2 (240 VAC) 3 Dip >95% (0 VAC), 8.3ms Dip 30% (70 VAC), 416ms A B B Dip >95% (0 VAC), 4160ms B Dip >95% (0 VAC), 10.0ms B Dip 30% (168 VAC), 500ms B Dip >95% (0 VAC), 5000ms B Dip >95% (0 VAC), 10.0ms A Dip 60% (40 VAC), 100ms A Dip 30% (70 VAC), 500ms A Dip >95% (0 VAC), 5000ms B Dip >95% (0 VAC), 10.0ms A Dip 60% (96 VAC), 100ms A Dip 30% (168 VAC), 500ms A Dip >95% (0 VAC), 5000ms B Notes & Conditions Derate Output Power to 140 W Safety Agency Approvals Safety Agency Safety Standard Category CB Report UL, IEC60950-1:2005 Ed 2 Information Technology UL UL60950-1 (2007), CSA 22.2 No.60950-1-07 Ed 2 Information Technology TUV TUV, EN60950-1:2006 Information Technology CE LVD & RoHS Safety Agency Safety Standard Category CB Report IEC60601-1 Ed 3 Including Risk Management Medical UL ANSI/AAMI ES 60601-1:2005 & CSA C22.2 No. 60601-1:08 Medical TUV EN60601-1:2006 Medical Primary to Secondary 2 x MOPP (Means of Patient Protection) Means of Protection Primary to Earth 1 x MOPP (Means of Patient Protection) Secondary to Earth 1 x MOPP (Means of Patient Protection) Equipment Protection Class Safety Standard Notes & Conditions IEC60950-1:2005 Ed 2 & IEC60601-1 Ed 3 See safety agency conditions of acceptability for details Class I & BF 6 Category IEC60601-1 Ed 3 xppower.com Signals Description & Compatibility Model Remote Sense P P EMH350PDxx-U EMH350PDxx-EF Characteristic Fan Supply P P 5 V Standby P P Functions AC OK/ Inhibit V1 & Power Fail V Fan P P Current Share P P P P Variable Speed Fan Control PMBus P Contact Sales Notes & Conditions Signals & Control Remote Sense Compensates for 0.5 V total voltage drop 12 V Fan Supply (V3) 12 V/0.6 A supply, present when AC supplied, inhibit turns fan supply off. 5V Standby 5 V/2 A supply, always present when AC supplied AC OK/Power Fail AC OK is an open collector transistor, referenced to negative output, providing a minimum of 3 ms warning of loss of output regulation. The transistor is normally on when AC is healthy. See fig. 8. Inhibit The inhibit high pin should be pulled below 0.4 V to switch V1 & V Fan (V3) off. Open circuit or 2-8 V maximum to switch the output on. See fig. 9. Current Share Connecting pin 9 (-01 & -02 models) of like voltage units (3 maximum) will force the current to share between the outputs. Units share current within 10% of each other at full load. See fig. 10. Variable Speed Fan Control Only available for -EF models. Varies the speed of the integral fans depending on input voltage, output power & ambient temperature within the unit. Inhibit Parallel & Current Share Figure 8 Figure 9 Figure 10 - + Current Share 1K Inhibit Hi Pin 10 AC OK Collector Pin 11 Transistor On (<0.8 V): AC OK Transistor Off (>4.5 V): AC NOT OK/Power Fail + + EMH350PDXX (3) V1 Output - Current Share -S + se en Inhibit Lo Pin 8 (-sense) 5V Standby return pin 1 or 2 J2 Logic Connector Se ns e - se en -S AC OK Emitter -VE output V1 Output + Sense Max 30 V 10 mA EMH350DSXX (2) V1 Output + 5 V Standby Pin 3 or 4 EMH350PDXX (1) - Sense POWER SUPPLY POWER SUPPLY Se ns e AC OK Power Fail Signals Connector - + V2 Output EMH350PDXX (1) - + - + - + V2 Output EMH350DSXX (2) Load - + V2 Output EMH350PDXX (3) xppower.com Mechanical Details EMH350PDxx-U 6.00 (152.4) Output Terminals M4 PAN HD screws in 4 positions Torque to 8 lbs-in (90 cNm) max. Airflow Direction Output Connector 16 CFM C5 -V1 4.00 (101.6) Input Terminal Block Center Line 0.71 17.93 T1 L N E +V1 -V2 2.57 (65.4) 1.96 (49.8) 1.30 (33.1) +V2 0.69 (17.4) D5 Input Terminal Block TYCO p/n 640445-5 C3 Output Connector Center Line M3 Mounting holes in 2 positions each side Max penetration by screw: 3.5 mm from outside face of chassis CON 2 +V1 CON 3 -V1 Input Connector CON 1 TYCO part # 640445-5 1 Line 3 Neutral 5 Earth Pins 2 & 4 removed 0.63 (16.1) Mates with Tyco SL-156 Series Connector 1.57 (39.8) 0.75 (19.1) 1.73 (44.0) 4.00 (101.6) EMH350PDxx-EF 7.00 (177.8) Output Terminals M4 PAN HD screws in 4 positions Torque to 8 lbs-in (90 cNm) max. Recommended Airflow Direction 2.00 (50.8) -V1 4.00 (101.6) Input Terminal Block Center Line +V1 -V2 2.58 (65.4) 2.00 (50.8) 1.31 (33.1) 0.63 (16.1) 1.96 (49.8) 7.59 (192.8) Input Terminal Block - Dinkle Products DT-2C-A02W-03 0.69 (17.4) 1.18 (29.9) 1.75 (44.5) 0.88 (22.2) 0.57 (14.4) Pin 11 Pin 9 Pin 7 Pin 5 Pin 3 Pin 1 Pin 12 Pin 10 Pin 8 Pin 6 Pin 4 Pin 2 Pin 1 2 3 4 5 6 Pin Connections Function Pin Function -VE Standby 7 V1 +VE Sense -VE Standby 8 V1 -VE Sense +VE Standby 9 Current Share +VE Standby 10 Inhibit Fan +VE 11 Power Fail Fan -VE 12 Not Connected Signals Connector - 12 WAY 2mm PITCH p/n JST S12B-PHDSS Mating HALF - p/n JST PHDR-12VS Contact - 26-22 AWG p/n JST SPHD-001T-P0.5 Notes 1. Dimensions shown in inches (mm). Tolerance: ±0.02 (±0.5) 8 2. Weight: U channel: 1.6 lb (730 g), End Fan: 2.2 lbs (1003 g) +V2 Output Connector Center Line xppower.com Thermal Considerationse (U Channel Versions) Xxxxxxxxxx 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. Temperature should be monitored using K type thermocouples placed on the hottest part of the component (out of any direct air flow). See Mechanical Details for component locations. Temperature Measurements (Ambient ≤ 50 °C) Component Max Temperature ºC D5 case 120 °C C5 105 °C C3 105 °C T1 coil 120 °C Service Life (U Channel Versions) The estimated service life of the EMH Dual Series is determined by the cooling arrangements and load conditions experienced in the end application. Due to the uncertain nature of the end application this estimated service life is based on the actual measured temperature of a key capacitor within the product when installed in the end application. The graph below expresses the estimated lifetime for a given component temperature and assumes continuous operation at this temperature. Estimated Service Life vs Component Temperature 120000 Lifetime (Hrs) 100000 80000 60000 40000 20000 0 105 95 85 75 65 55 C5 C6 Temperature (°C) Temperature (°C) 08 Sept 16