BCM380y475x1K2A31
Signal Characteristics
Specifications apply over all line, load conditions, unless otherwise noted;
Boldface
specifications apply over the temperature range of -40°C
≤
T
INTERNAL
≤
125°C (T-Grade); All other specifications are at T
INTERNAL
= 25ºC unless otherwise noted.
UART SER-IN / SER-OUT Pins
• Universal Asynchronous Receiver/Transmitter (UART) pins.
• The BCM communication version is not intended to be used without a Digital Supervisor.
• Isolated I
2
C communication and telemetry is available when using Vicor Digital Isolator and Vicor Digital Supervisor. Please see specific product data sheet
for more details.
• UART SER-IN pin is internally pulled high using a 1.5 kΩ to 3.3 V.
SIGNAL TYPE
GENERAL I/O
STATE
ATTRIBUTE
Baud Rate
SER-IN Pin
V
SER-IN_IH
SER-IN Input Voltage Range
V
SER-IN_IL
DIGITAL
INPUT
SER-IN fall time
SER-IN R
PULLUP
Regular
Operation
SER-IN External Capacitance
SER-OUT Pin
V
SER-OUT_OH
0 mA
≥
I
OH
≥
-4 mA
2.8
V
t
SER-IN_FALL
R
SER-IN_PLP
C
SER-IN_EXT
10% to 90%
Pull up to 3.3 V
25
1.5
400
ns
kΩ
pF
SER-IN rise time
t
SER-IN_RISE
10% to 90%
400
1
V
ns
2.3
V
SYMBOL
BR
UART
Rate
CONDITIONS / NOTES
MIN
TYP
750
MAX
UNIT
Kbit/s
SER-OUT Output Voltage
Range
DIGITAL
OUTPUT
SER-OUT rise time
SER-OUT fall time
SER-OUT source current
SER-OUT output impedance
V
SER-OUT_OL
t
SER-OUT_RISE
t
SER-OUT_FALL
I
SER-OUT
Z
SER-OUT
0 mA
≤
I
OL
≤
4 mA
10% to 90%
10% to 90%
V
SER-OUT
= 2.8 V
120
55
45
0.5
V
ns
ns
6
mA
Ω
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.
• Enable / disable command will have no effect if the EN pin is disabled.
SIGNAL TYPE
STATE
Startup
ANALOG
INPUT
Regular
Operation
ATTRIBUTE
EN to Powertrain active time
EN Voltage Threshold
EN Resistance (Internal)
EN Disable Threshold
SYMBOL
t
EN_START
V
ENABLE
R
EN_INT
V
EN_DISABLE_TH
Internal pull up resistor
CONDITIONS / NOTES
V
IN
> V
IN_UVLO+
,
EN held low both conditions satisfied
for t > t
UVLO+_DELAY
2.3
1.5
1
MIN
TYP
250
MAX
UNIT
µs
V
kΩ
V
BCM
®
Bus Converter
Page 9 of 23
Rev 1.4
05/2015
vicorpower.com
800 927.9474
VICOR [ VICOR CORPORATION ]
