IB0XXQ120T53XX-XX Datasheet, PDF (15/19 Pages) Vicor Corporation – 4:1 Intermediate Bus Converter Module: Up to 650W Output

IB0xxQ120T53xx-xx
Pin / Control Functions
+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
undervoltage turn-on” and “Input overvoltage turn-off” levels, as
1
5
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
2 Top View
positive input located on the load side of the input fuse.
The connection of the IBC to its power source should be
3
4
implemented with minimal distribution inductance. If the
interconnect inductance exceeds 100nH, the input should be
bypassed with a RC damper to retain low source impedance and
stable operation. With an interconnect inductance of 200nH,
the RC damper may be 47μF in series with 0.3Ω. 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 0.8V_DC with respect to –IN,
the output is enabled. The EN port can be driven by a relay,
optocoupler, or open collector transistor. Refer to Figure 8 for
the typical enable / disable characteristics. This port should not
be toggled at a rate higher than 1Hz. The EN port should also
not be driven by or pulled up to an external voltage source.
Positive logic option
If the EN port is left floating, the IBC output is enabled. Once this
port is pulled lower than 1.4V_DC with respect to –IN, the output
is disabled. This action can be realized by employing a relay,
optocoupler, or open collector transistor. This port should not be
toggled at a rate higher than 1Hz.
The EN port should also not be driven by or pulled up to an
external voltage source. The EN port can source up to 2mA at
5V_DC. 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 8.
Pin Number
1
2
3
4
5
Figure 32 — IBC Pin Designations
Function
V_IN+
Enable
V_IN-
V_OUT-
V_OUT+
+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.
IBC Module
Page 15 of 19
Rev 1.1
09/2016
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