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EMH350PS24 Datasheet(PDF) 8 Page - XP Power Limited |
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EMH350PS24 Datasheet(HTML) 8 Page - XP Power Limited |
8 / 9 page Model Functions Remote Sense Fan Supply 5 V Standby AC OK/ Power Fail Inhibit V1 & V Fan Current Share Variable Speed Fan Control PMBus EMH350PDxx-U Contact Sales EMH350PDxx-EF EMH350 Signals & Controls Dual Outputs Characteristic 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 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 & 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 tem- perature within the unit. - + - + - + - + V1 Output V1 Output V1 Output - S en se + S ens e Current Share Current Share - + - + - + V2 Output V2 Output V2 Output EMH350PDXX (1) EMH350DSXX (2) EMH350PDXX (3) EMH350PDXX (1) EMH350DSXX (2) EMH350PDXX (3) Load AC OK/Power Fail Inhibit Parallel Load & Current Share AC OK Collector Pin 11 AC OK Emitter Pin 8 (-sense) POWER SUPPLY Transistor On (<0.8 V): AC OK Transistor Off (>4.5 V): AC NOT OK J2 Logic Connector 1 K 5 V Standby Pin 3 or 4 Max 30 V 10 mA Inhibit Hi Pin 10 POWER SUPPLY Signals Connector Inhibit Lo Pin 8 (-sense) Figure 4. Figure 5. Figure 6. Signals Description & Compatibility |
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