BCM3814x60E15A3yzz
Signal Characteristics
Specifications apply over all line and load conditions, unless otherwise noted; boldface specifications apply over the temperature range of
–40°C ≤ TCASE ≤ 100°C (T-Grade); all other specifications are at TCASE = 25ºC unless otherwise noted. Please note: For chassis mount model, Vicor part
number 42550 will be needed for applications requiring the use of the signal pins. Signal cable 42550 is rated up to five insertions and extractions. To avoid
unnecessary stress on the connector, the cable should be appropriately strain relieved.
EXT. BIAS (VDDB) Pin
• VDDB powers the internal controller.
• VDDB needs to be applied to enable and disable the BCM through PMBus™ control (using OPERATION COMMAND), and to adjust warning and
protection thresholds.
• VDDB voltage not required for telemetry; however, if VDDB is not applied, telemetry information will be lost when VIN is removed.
SIGNAL TYPE
STATE
ATTRIBUTE
VDDB Voltage
SYMBOL
VVDDB
CONDITIONS / NOTES
MIN
TYP
MAX UNIT
4.5
5
9
V
mA
A
Regular
Operation
VDDB Current Consumption
Inrush Current Peak
Turn On Time
IVDDB
50
INPUT
IVDDB_INR
tVDDB_ON
VVDDB slew rate = 1V/µs
From VVDDB_MIN to PMBus active
3.5
1.5
Start Up
ms
SGND Pin
• All PMBus interface signals (SCL, SDA, ADDR) are referenced to SGND pin.
• SGND pin also serves as return pin (ground pin) for VDDB.
• Keep SGND signal separated from the low voltage side power return terminal (–LO) in electrical design.
Address (ADDR) Pin
• This pin programs the address using a resistor between ADDR pin and signal ground.
• The address is sampled during start up and is stored until power is reset. This pin programs only a Fixed and Persistent address.
• This pin has an internal 10kΩ pullup resistor to 3.3V.
• 16 addresses are available. The range of each address is 206.25mV (total range for all 16 addresses is 0V to 3.3V).
SIGNAL TYPE
STATE
ATTRIBUTE
ADDR Input Voltage
ADDR Leakage Current
ADDR Registration Time
SYMBOL
VSADDR
ISADDR
CONDITIONS / NOTES
See address section
MIN
TYP
MAX UNIT
0
3.3
1
V
Regular
Operation
MULTI–LEVEL
INPUT
Leakage current
From VVDDB_MIN
µA
ms
Start Up
tSADDR
1
BCM® in a VIA Package
Page 11 of 41
Rev 2.0
02/2018
VICOR [ VICOR CORPORATION ]
