D1U54-HD-1200-12-HA4C Datasheet, PDF (7/8 Pages) Murata Power Solutions Inc. – 54mm 1U Front End HVDC Power Supply Converter

WIRING DIAGRAM
D1U54-HD-1200-12-HA4C
54mm 1U Front End HVDC Power Supply Converter
CURRENT SHARING NOTES
1. Main Output: Current sharing is achieved using the active current share method.
2. Current sharing can be achieved with or without the remote (V_SENSE) connected to the common load.
3. +VSB Outputs can be tied together for redundancy but total combined output power must not exceed the rated standby power of a single unit. The +VSB output has an internal ORING
MOSFET for additional redundancy/internal short protection.
4. The current sharing pin B5 is connected between sharing units (forming an ISHARE bus). It is an input and/or an output (bi-directional analog bus) as the voltage on the line controls the
current share between sharing units. A power supply will respond to a change in this voltage but a power supply can also change the voltage depending on the load drawn from it. On
a single unit the voltage on the pin (and the common ISHARE bus would read 8VDC at 100% load (power module capability). For two units sharing the same load this would read 4VDC
for perfect current sharing (i.e. 50% power capability per unit).
5. The load for both the main 12V and the VSB rails at initial startup shall not be allowed to exceed the capability of a single unit. The load can be increased after a delay of 3sec
(minimum), to allow all sharing units to achieve steady state regulation.
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