BCM400x500y1K8A3z
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 MAX UNIT
Powertrain active to TM
time
Startup
tTM
100
µs
TM Duty Cycle
TM Current
TMPWM
ITM
18.18
68.18
4
%
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
kΩ
Regular
Specifications using recommended filter
Operation
TM Gain
ATM
10
mV / °C
V
TM Voltage Reference
VTM_AMB
1.27
RTM_EXT = 1 K Ohm, CTM_EXT = 0.01 uF, VPRI_DC
= 400 V, ISEC_DC = 35 A
28
TM Voltage Ripple
VTM_PP
mV
TINTERNAL ≤ 100ºC
40
Enable / Disable Control
• The EN pin is a standard analog I/O configured as an input to an internal µC.
• It is internally pulled high to 3.3 V.
• When held low the BCM internal bias will be disabled and the powertrain will be inactive.
• 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
2.3
TYP MAX UNIT
EN to Powertrain active
time
VPRI_DC > VPRI_UVLO+, EN held low both
conditions satisfied for T > tPRI_UVLO+_DELAY
Startup
tEN_START
250
µs
ANALOG
INPUT
EN Voltage Threshold
EN Resistance (Internal)
EN Disable Threshold
VEN_TH
REN_INT
V
kΩ
V
Regular
Internal pull up resistor
1.5
Operation
VEN_DISABLE_TH
1
BCM® Bus Converter
Page 10 of 25
Rev 1.4
07/2015
vicorpower.com
800 927.9474
VICOR [ VICOR CORPORATION ]
