BCM380y475x1K2A30
Signal Characteristics
Specifications apply over all line, load conditions, unless otherwise noted; Boldface specifications apply over the temperature range of -40°C ≤ TINTERNAL
≤ 125°C (T-Grade); All other specifications are at TINTERNAL = 25ºC unless otherwise noted.
Temperature Monitor
• The TM pin is a standard analog I/O configured as an output
from an internal µC.
• The TM pin monitors the internal temperature of the controller IC
within an accuracy of 5°C.
• µC 250 kHz PWM output internally pulled high to 3.3 V.
SIGNAL TYPE
STATE
ATTRIBUTE
SYMBOL
CONDITIONS / NOTES
MIN
TYP
100
MAX UNIT
Start Up
Powertrain active to TM time
TM Duty Cycle
tVAUX
VTM
ITM
Powertrain active to TM PWM
µs
18.18
68.18
4
%
TM Current
mA
Recommended External filtering:
TM Capacitance (External)
TM Resistance (External)
CTM_EXT
RTM_EXT
Recommended External filtering
Recommended External filtering
0.01
1
µF
DIGITAL
OUTPUT
Regular
kΩ
Operation
Specifications using recommended filter:
TM Gain
ATM
10 mV/°C
V
TM Voltage Reference
VTM_AMB
Controller TINTERNAL = 27°C
RTM_EXT = 1 KΩ, CTM_EXT = 0.01 µF,
VIN = 380 V, IOUT = 25.7 A
1.27
28
mV
TM Voltage Ripple
VTM_PP
T
INTERNAL ≤ 100ºC
40
mV
ENABLE Control
• The EN pin is a standard analog I/O configured as an input to an
internal µC.
• When held low the BCM® internal bias will be disabled and the
powertrain will be inactive.
• It is internally pulled high to 3.3 V.
• In an array of BCMs, EN pins should be interconnected to synchronize
startup and permit startup into full load conditions.
SIGNAL TYPE
STATE
ATTRIBUTE
SYMBOL
CONDITIONS / NOTES
MIN
0.4
TYP
250
1.5
MAX UNIT
ENPull-downResistance(External)
REN_EXT
Module may not start with lower value
VIN > VIN_UVLO+, EN held low both
conditions satisfied for t > tUVLO+_DELAY
kΩ
Start Up
EN to Powertrain active time
tEN_START
µs
EN Voltage Threshold
EN Resistance (Internal)
EN Disable Threshold
VEN_TH
REN_INT
0.7
V
ANALOG
INPUT
Regular
Internal pull up resistor
kΩ
V
Operation
VEN_DISABLE_TH
0.30
Module will ignore attempts to .
re-enable during time off
Fault
Time off
tENABLE_OFF
292.5
357.5
ms
BCM® Bus Converter
Page 8 of 24
Rev 1.0
12/2013
vicorpower.com
800 927.9474
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