BCM380P475T1K2A30 Datasheet, PDF (10/25 Pages) Vicor Corporation – Fixed Ratio DC-DC Converter

BCM380x475y1K2A3z
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.
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
Startup
ATTRIBUTE
SYMBOL
Powertrain active to TM
time
t_TM
TM Duty Cycle
TM_PWM
TM Current
I_TM
Recommended External filtering
CONDITIONS / NOTES
MIN TYP MAX UNIT
100
µs
18.18
68.18 %
4 mA
DIGITAL
OUTPUT
Regular
Operation
TM Capacitance (External) C_{TM_EXT} Recommended External filtering
TM Resistance (External)
R_{TM_EXT} Recommended External filtering
Specifications using recommended filter
TM Gain
A_TM
0.01
µF
1
kΩ
10
mV / °C
TM Voltage Reference
TM Voltage Ripple
V_{TM_AMB}
V_{TM_PP}
R_{TM_EXT} = 1 K Ohm, C_{TM_EXT} = 0.01 uF, V_{PRI_DC}
= 380 V, I_{SEC_DC} = 25.7 A
T_INTERNAL ≤ 100ºC
1.27
V
28
mV
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
ANALOG
INPUT
Startup
Regular
Operation
EN to Powertrain active
time
EN Voltage Threshold
EN Resistance (Internal)
EN Disable Threshold
t_{EN_START}
V_{EN_TH}
V_{PRI_DC} > V_{PRI_UVLO+}, EN held low both
conditions satisfied for T > t_{PRI_UVLO+_DELAY}
R_{EN_INT}
Internal pull up resistor
V_{EN_DISABLE_TH}
MIN
2.3
TYP MAX UNIT
250
µs
V
1.5
kΩ
1
V
BCM^® Bus Converter
Page 10 of 25
Rev 1.7
07/2015
vicorpower.com
800 927.9474