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BC048A015M014FP Fiches technique(PDF) 7 Page - Vicor Corporation

No de pièce BC048A015M014FP
Description  BCM™ Bus Converter
Download  11 Pages
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Fabricant  VICOR [Vicor Corporation]
Site Internet  http://www.vicorpower.com
Logo VICOR - Vicor Corporation

BC048A015M014FP Fiches technique(HTML) 7 Page - Vicor Corporation

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Bus Converter Module
BC048A015T014FP
vicorpower.com
Rev. 1.0
Page 7 of 11
+In / -In – DC Voltage Input Ports
The VI BRICK (BCM) input voltage range should not be exceeded. An
internal under / over voltage lockout function prevents operation outside
of the normal operating input range. The BCM turns on within an input
voltage window bounded by the “Input undervoltage turn-on” and “Input
overvoltage turn-off” levels, as specified. The BCM may be protected
against accidental application of a reverse input voltage by the addition of
a rectifier in series with the positive input, or a reverse rectifier in shunt
with the positive input located on the load side of the input fuse.
The connection of the BCM to its power source should be implemented
with minimal distribution inductance. If the interconnect inductance
exceeds 100 nH, the input should be bypassed with a RC damper to retain
low source impedance and stable operation. With an interconnect
inductance of 200 nH, the RC damper may be 47 µF in series with 0.3 Ω.
A single electrolytic or equivalent low-Q capacitor may be used in place of
the series RC bypass.
PC – Primary Control
The Primary Control port is a multifunction node that provides the
following functions:
Enable / Disable – If the PC port is left floating, the BCM output is enabled.
Once this port is pulled lower than 2.4 Vdc with respect to –In, the output
is disabled. This action can be realized by employing a relay, opto-coupler,
or open collector transistor. Refer to Figures 1-3, 12 and 13 for the typical
enable / disable characteristics. This port should not be toggled at a rate
higher than 1 Hz. The PC port should also not be driven by or pulled up to
an external voltage source.
Primary Auxiliary Supply – The PC port can source up to 2.4 mA at 5.0 Vdc.
The PC port should never be used to sink current.
Alarm – The BCM contains circuitry that monitors output overload, input
overvoltage or undervoltage, and internal junction temperatures. In response
to an abnormal condition in any of the monitored parameters, the PC port
will toggle. Refer to Figure 13 for PC alarm characteristics.
TM and RSV – Reserved for factory use.
+Out / -Out – DC Voltage Output Ports
Two sets of contacts are provided for the +Out port. They must be
connected in parallel with low interconnect resistance. Similarly, two sets
of contacts are provided for the –Out port. They must be connected in
parallel with low interconnect resistance. Within the specified operating
range, the average output voltage is defined by the Level 1 DC behavioral
model of Figure 16. The current source capability of the BCM is rated in
the specifications section of this document.
The low output impedance of the BCM reduces or eliminates the need for
limited life aluminum electrolytic or tantalum capacitors at the input of POL
converters.
Total load capacitance at the output of the BCM should not exceed the
specified maximum. Owing to the wide bandwidth and low output
impedance of the BCM, low frequency bypass capacitance and significant
energy storage may be more densely and efficiently provided by adding
capacitance at the input of the BCM.
PIN / CONTROL FUNCTIONS
Figure 14 — VI BRICK BCM pin configuration (viewed from pin side)


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