IB054E096T48N1-00 Datasheet, PDF (10/13 Pages) Vicor Corporation – 5:1 Intermediate Bus Converter Module: Up to 500 W Output

PIN / CONTROL FUNCTIONS
IB054E096T48N1-00
+In / -In – DC Voltage Input Pins
The IBC input voltage range should not be exceeded. An internal
undervoltage /overvoltage lockout function prevents operation outside of
the normal operating input range. The IBC turns on within an input voltage
window bounded by the “Input under-voltage turn-on” and “Input
over-voltage turn-off” levels, as specified. The IBC 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 IBC 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.
EN - Enable/Disable
Negative Logic Option
If the EN port is left floating, the IBC output is disabled. Once this port is-
pulled lower than 0.8 Vdc with respect to –In, the output is enabled. The
EN port can be driven by a relay, opto-coupler, or open collector transistor.
Refer to Figures 6 and 7 for the typical enable / disable characteristics. This
port should not be toggled at a rate higher than 1 Hz. The EN port should
also not be driven by or pulled up to an external voltage source.
1
2 Top View
3
Pin
1
2
3
4
5
Figure 31 — IBC Pin Designations
Positive Logic Option
If the EN port is left floating, the IBC output is enabled. Once this port is
pulled lower than 1.4 Vdc with respect to –In, the output is disabled. This
action can be realized by employing a relay, opto-coupler, or open collector
transistor. This port should not be toggled at a rate higher than 1 Hz.
The EN port should also not be driven by or pulled up to an external volt-
age source. The EN port can source up to 2 mA at 5 Vdc. The EN port
should never be used to sink current.
If the IBC is disabled using the EN pin, the module will attempt to restart
approximately every 250ms. Once the module has been disabled for at least
250ms, the turn on delay after the EN pin is enabled will be as shown in
Figure 7.
+Out / -Out – DC Voltage Output Pins
Total load capacitance at the output of the IBC should not exceed the
specified maximum. Owing to the wide bandwidth and low output
impedance of the IBC, low frequency bypass capacitance and significant
energy storage may be more densely and efficiently provided by adding
capacitance at the input of the IBC.
5
4
Function
Vin+
Enable
Vin-
Vout-
Vout+
IBC MODULE
Page 10 of 13
Rev 1.1
10/2012
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