AC-DC 250/350 Watts xppower.com EMH Series * Single & Dual Output Models * 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 Specification Input General * 80-275 VAC, derate output power <90 VAC (see derating curve) Input Frequency * 47-63 Hz Input Current * 2.6 / 3.6 A at 115 VAC typical (250 / 350 W) 1.3 / 1.8 A at 230 VAC typical (250 / 350 W) Inrush Current * 40 A max at 230 VAC, cold start 25 C Power Factor * >0.9 Earth Leakage Current * 250 A max, 264 VAC, 60 Hz Patient Leakage Current * 100 A max Input Protection * 10 AF / 250 V internal fuse in line and neutral Input Voltage Output 12-48 VDC (see tables) 10% V1 1% V1, 5% V2 No minimum load required 1 s typical 50 ms 16 ms typical 0.5% maximum 1% V1, 5% standby Dual output only (see regulation curves) 4% max. deviation, recovery to within 1% in 500 s for a 50-75-50% load change Ripple & Noise * 1% pk-pk, 20 MHz bandwidth Overvoltage Protection * 115-140% V1 nom, recycle input to reset Overtemperature * Auto reset Protection Overload Protection * 110-150%, power limit Short Circuit Protection * Continuous, approximately constant current Temperature * 0.05% / C Coefficient Remote Sense * Compensates for up to 0.5 V drop Output Voltage Output Voltage Trim Initial Set Accuracy Minimum Load Start Up Delay Start Up Rise Time Hold Up Time Line Regulation Load Regulation Cross Regulation Transient Response * * * * * * * * * * * * 87% typical * 4000 VAC input to output 2 x MOPP, 1500 VAC input to ground 1 x MOPP, 1500 VAC output to ground 1 x MOPP Switching Frequency * 62-560 / 71 / 50-130 KHz, PFC / Main / Standby Converter Power Density * 11.6/ 16.3/ 9.5 W/in3 (250 / 350 / 350 W Dual) Signals (Option EMH350) * Power fail, Inhibit, 5 V Standby, Current Share, fan speed control and I2C PMBus Options MTBF * 400 kHrs to MIL-HDBK-217F at 25 C, GB Efficiency Isolation Environmental Operating Temperature * 0 C to +70 C, derate linearly from +50 C at 2.5% / C to 50% load at +70 C Cooling * Forced cooled 12 CFM (350 W Dual: 16 CFM) or integral fan. See thermal considerations longform datasheet Operating Humidity * 95% RH, non-condensing Storage Temperature * -40 C to +85 C Operating Altitude * 3048 m Shock * 3 x 30g shocks in each plane, total 18 shocks. 30g = 11 ms (0.5 ms), 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 EMC & Safety Emissions Harmonic Currents Voltage Flicker Radiated Immunity EFT/Burst Surge Conducted Immunity Dips & Interruptions Safety Approvals * EN55011/22 level B conducted EN55011/22 level A radiated (See longform datasheet and/or EMC report) * EN61000-3-2, class A * EN61000-3-3 * EN61000-4-3, level 3 Perf Criteria A * EN61000-4-4, level 3 Perf Criteria A * EN61000-4-5, installation class 3, Perf Criteria A * EN61000-4-6, level 3, Perf Criteria A * EN61000-4-11, 30% 10 ms, 60% 100 ms, 100% 5000 ms, Perf Criteria A, B, B, EN60601-1-2, 30% 500 ms, 60% 100 ms, 100% 10 ms, 100% 5000 ms, Perf Criteria A, A, A, B - 230 VAC. Consult longform datasheet for 115 V operation. * EN60601-1, ANSI/AAMI ES60601-1, CSA22.2 No.60601-1 per cUL BF Rated, Including Risk Management, EN60950, UL60950 Output Voltage V1 Output Current V1 12 V 18 V 24 V 48 V 21.0 14.0 10.5 5.2 Fan Supply V3 A A A A 12 V/0.6 12 V/0.6 12 V/0.6 12 V/0.6 A A A A Output Power Model Number(1) 252 W 252 W 252 W 250 W EMH250PS12 EMH250PS18 EMH250PS24 EMH250PS48 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. Mechanical Details EMH250PSXX R 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 (pin 2) N/C Input Connector CON 1 TYCO part # 640445-5 Pin 1 Line Pin 3 Neutral Pin 5 Earth Output Connector N/C +V1 Fan -VE Con 3 -V1 -VE Sense + VE Sense (pin 10) N/C N/C (pin 9) (pin 9) Notes 3. Mounting holes marked with S mum EMC performance. Derating Curve - All EMH250 & EMH350 Models 100 Output Power (%) 90 80 70 60 50 40 85 Fan +VE 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 Mates with Tyco SL-156 Series Connector 80 N/C Con 2 Pins 2 & 4 removed 1. Dimensions shown in inches (mm). Tolerance: 0.02 (0.5) 2. Weight: 0.90 lb (410 g). N/C (pin 1) 264 90 Input Voltage (VAC) must be connected to safety earth for opti- AC-DC EMH250 Models and Ratings - Single Outputs AC-DC EMH350 Models and Ratings - Single Outputs Output Voltage V1 Output Current V1 Standby Supply Fan Supply V3 Output Power Model Number(1) 12 V 29.2 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS12 18 V 19.5 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS18 24 V 14.6 A 5.0 V / 2.0 A 12 V/0.6 A 355 W EMH350PS24 48 V 7.3 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS48 ( Notes 1. The EMH350 is available with various analog, digital signal and cover options. See compatibility table and mechanical drawing later in this datasheet. Mechanical Details EMH350 C 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 L N 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 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 Output Connector Center Line D5 0.35 (9.1) 4.55 (115.6) (pin 2) +VE Standby -VE Standby Fan -VE -VE Sense 1.43 (36.3) (pin 10) N/C +VE Standby (pin 1) -VE Standby CON 2 +V1 CON 3 -V1 Input Connector CON 1 TYCO part # 640445-5 Fan +VE + 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) 5.0 (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) Output Terminals M4 Pan HD screws in 2 positions Torque to 8 lbs-in (90 cNm) max 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 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 11 I2C Data 12 I2C Clock Notes 1. Dimensions shown in inches (mm). Tolerance: 0.02 (0.5) 2. Weight: 0.90 lb (410 g). 3. Mounting holes marked with optimum EMC performance. must be connected to safety earth for Output Voltage V1 Output Current V1 Standby Supply Fan Supply V3 Output Power Model Number(1) 12 V 29.2 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS12D 18 V 19.5 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS18D 24 V 14.6 A 5.0 V / 2.0 A 12 V/0.6 A 355 W EMH350PS24D 48 V 7.3 A 5.0 V / 2.0 A 12 V/0.6 A 354 W EMH350PS48D Notes ( 1. The EMH350D models are fitted with an integral ORing diode and are also available with various analog and digital signal options. See compatibility table and mechanical drawing later in this datasheet. C Mechanical Details EMH350D 5.75 0.02 (146.0 0.5) 0 Signals Connector* Output Connector Center Lines I 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 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 Output Terminals M4 Screw in 2 positions Torque to 8 lbs-in (90 cNm) max. D5 Output Connector Center Lines 0.22 (5.7) 0.35 (9.1) 0.97 (24.7) 4.55 (115.6) Output Connector (pin 2) +VE Standby +VE Standby (pin 1) -VE Standby -VE Standby Fan -VE 1.43 0.02 (36.3 0.5) Fan +VE -VE Sense CON 2 +V1 CON 3 -V1 + VE Sense (pin 10) N/C Input Connector CON 1 TYCO part # 640445-5 N/C (pin 9) *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 EMH350D (Signal Options) 1 Line 3 Neutral 5 Earth Pins 2 & 4 removed Mates with Tyco SL-156 Series Connector 5.75 0.02 (146.0 0.5) *Signal Connector Pin 1 Recommended Airflow Direction 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) Output Adj. Output Connector Center Lines 0.91 (23.1) E Input Terminal Block, Center Line M3 mounting holes in 4 positions 0.22 (5.7) 0.35 (9.1) Output Connector Center Lines Input Terminal Block 4.55 (115.6) 0.97 (24.7) ( 1.43 0.02 (36.3 0.5) 4 Pin 11 Pin 12 Pin 9 Pin 10 Pin 7 Pin 8 Pin 5 Pin 6 Pin 3 Pin 4 Pin 1 Pin 2 Output Terminals M4 Screw in 2 positions Torque to 8 lbs-in (90 cNm) max. 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 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-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 Notes 1. Dimensions shown in inches (mm). Tolerance: 0.02 (0.5) 2. Weight: 1.0 lbs (450 g). 3. Mounting holes marked with optimum EMC performance. must be connected to safety earth for AC-DC EMH350D Models and Ratings - Single Outputs Signals Description & Compatibility Signal & Cover Options Cover Compatibility Functions Model Remote Fan Supply 5 V Standby AC OK/Power 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 P P P P P P P Inhibit V1 & V Fan 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 Characteristic 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. 1. 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. 2. Current Share P will force the current to share between the outputs. Connecting pin 9 (-01 & -02 models) of like voltage units (3 maximum) Units share current within 10% of each other at full load. See fig. 3. Variable Speed Fan Control When used in conjuction with -VF fan cover, varies the speed of the fan depending on temperature of the unit. See longform datasheet for details. 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. See longform datasheet for full details. AC OK/Power Fail Inhibit Parallel Load & Current Share Figure 1. Figure 2. Figure 3. Max 30 V 10 mA - 1K Current Share + Se ns e se en -S Transistor On (<0.8 V): AC OK Transistor Off (>4.5 V): AC NOT OK/Power Fail - Inhibit Lo Pin 8 (-sense) V1 Output + + Sense Inhibit I Hi Pin 10 AC OK Collector Pin 11 AC OK Emitter -VE output + 5V Standby return pin 1 or 2 Signals Connector J2 Logic Connector - + Load (2) (2) E E EMH350PSXX (3) EMH350PSXX (2) V1 Output V1 Output - Current Share -S se en + 5 V Standby Pin 3 or 4 EMH350PSXX (1) Se ns e POWER SUPPLY POWER SUPPLY - Sense AC-DC EMH350 Signals & Controls - Single Outputs + AC-DC EMH250/350 Mechanical Details - Single Outputs 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) ( 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 Signals Connector* +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) 3.50 (88.9) 2.78 0.02 (70.5 0.5) +VE (pin 1) (pin 2) +VE -VE -VE 0.97 (24.8) Fan -VE 0.75 (19.1) 3.50 (88.9) Fan +VE -VE Sense +VE Sense (pin 9) N/C N/C (pin 10) Output Connector 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 M O Top Fan with Signals Options - EMH350-01TF, EMH350-50TF & EMH350-02VF CON 2 +V1 CON 3 -V1 Input Connector CON 1 TYCO part # 640445-5 1 Line 3 Neutral 5 Earth Pins 2 & 4 removed Mates with Tyco SL-156 Series Connector 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) M3 mounting holes in 2 positions Max. penetration by s crew 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. +V1 Con 2 1.19 (30.1) M3 mounting holes in 4 positions. Max. penetration by screw to be 0.157 (4.0) from outside face of chassis 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) Pin 11 Pin 12 Pin 9 Pin 10 Pin 7 Pin 8 Pin 5 Pin 6 Pin 3 Pin 4 Pin 1 Pin 2 3.50 (88.9) 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) 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 AC-DC EMH350 Models and Ratings - Dual Outputs Output Voltage V1 Output Current V1 Output Voltage V2 Output Current V2 Standby Supply Fan Supply V3 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. 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 16 CFM C5 4.00 (101.6) Input Terminal Block Center Line T1 L N E 0.71 17.93 2.57 (65.4) 1.96 (49.8) D5 Input Terminal Block TYCO p/n 640445-5 1.30 (33.1) 0.69 (17.4) 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 1.57 (39.8) Pin 11 Pin 9 Pin 7 Pin 5 Pin 3 Pin 1 0.75 (19.1) 1.73 (44.0) 4.00 (101.6) 3.94 (100.0) 0.63 (16.1) Pin 12 Pin 10 Pin 8 Pin 6 Pin 4 Pin 2 0.94 (23.9) 0.52 (13.30) Pin 1 2 3 4 5 6 2.95 (75.0) M3 Mounting holes (in 4 positions). Max. penetrations by screw to be 2.5mm from bottom face of chassis Pin Connections Function Pin Function -VE Standby 7 +VE Sense -VE Standby 8 -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) 2. Weight: 0.90 lb (410 g). 3. Mounting holes marked with optimum EMC performance. must be connected to safety earth for 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) 7.59 (192.8) Input Terminal Block - Dinkle Products DT-2C-A02W-03 0.63 (16.1) 1.96 (49.8) 0.69 (17.4) 1.18 (29.9) +V2 Output Connector Center Line 1.75 (44.5) 0.88 (22.2) 0.57 (14.4) 4 x M3 Customer fixing. Max. penetration by screw to be 4mm from bottom face of chassis 0.52 (13.3) 2.95 (75.0) 3.97 (100.0) Pin 1 2 3 4 5 6 Pin Connections Function Pin Function -VE Standby 7 +VE Sense -VE Standby 8 -VE Sense +VE Standby 9 Current Share +VE Standby 10 Inhibit Fan +VE 11 Power Fail Fan -VE 12 Not Connected 0.941 (23.9) 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) 2. Weight: 0.90 lb (410 g). 3. Mounting holes marked with optimum EMC performance. must be connected to safety earth for AC-DC EMH350 Mechanical Details AC-DC EMH350 Signals & Controls - Dual Outputs Signals Description & Compatibility Model Remote Sense P P EMH350PDxx-U EMH350PDxx-EF Fan Supply 5 V Standby P P P P Functions AC OK/ Inhibit V1 & Power Fail V Fan P P P P Current Share P P Variable Speed Fan Control PMBus P Contact Sales Notes & Conditions Characteristic 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 sense, providing a minimum of 3 ms warning of loss of output regulation. The transistor is normally off when AC is healthy. See fig. 4. Inhibit The inhibit high pin should be pulled below 0.4 V to switch V1, V2 & V Fan (V3) off. Open circuit or 2-8 V maximum to switch the output on. See fig. 5. 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. 6. Variable Speed Fan Control Only available for -EF models. Varies the speed of the integral fans depending input voltage, output power & ambient temperature within the unit. AC OK/Power Fail Inhibit Parallel Load & Current Share Figure 4. Figure 5. Figure 6. EMH350DSXX (2) V1 Output V1 Output - 1K + Current Share Inhibit Hi Pin 10 + Se ns e se en -S Transistor On (<0.8 V): AC OK Transistor Off (>4.5 V): AC NOT OK/Power Fail - Inhibit Lo Pin 8 (-sense) + EMH350PDXX (3) V1 Output - Current Share + Sense AC OK Collector Pin 11 AC OK Emitter -VE output EMH350PDXX (1) -S + se en Se ns e Max 30 V 10 mA 5 V Standby Pin 3 or 4 + P - Sense POWER SUPPLY POWER SUPPLY 5V Standby return pin 1 or 2 Signals Connector J2 Logic Connector (2) (2) E - + - + Load E - + V2 Output EMH350PDXX (1) - + V2 Output EMH350DSXX (2) - + V2 Output EMH350PDXX (3) EMH350PD21 V2 Load Regulation 26 25 24.5 24 23.5 23 22.5 22 21.5 21 20.5 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 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 V1 Load (A) V2 Load (A) EMH350PD22 V2 Cross Regulation 36 35 34 V2 2.75A (50%) Load 33 V2 5.5A (100%) Load V2 Output Voltage V2 Output Voltage 37 31 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 32 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 EMH350PD23 3 4 5 5.5 E V2 Cross Regulation Load Regulation Load Regulation Regulation Load V2 Load Regulation V2 2.1A (50%) Load V2 4.2A (100%) Load V2 Output Voltage 56 50 49 48 47 46 45 44 43 42 41 40 54 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 2 V2 Load (A) V1 Load (A) 0 V1 Load (A) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 4.2 V2 Load (A) EMH350PD24 V2 Cross Regualtion 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 V1 Load 2 3 4 5 6 7 8 8.3 V2 Output Voltage V2 Output Voltage AC-DC EMH350 Regulation Curves 54 52 V1 4.15A (50%) Load 50 V1 8.3A (100%) Load 48 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 4.2 V2 Load (A) 09 Oct 19