BCM380Y475X1K2A31 Datasheet, PDF (6/23 Pages) Vicor Corporation – Fixed Ratio DC-DC Converter

BCM380y475x1K2A31
Electrical Specifications (Cont.)
Specifications apply over all line and 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.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max Unit
Effective Output capacitance (internal)
Effective Output capacitance (external)
Array Maximum external output
capacitance
C_{OUT_INT}
COUT_EXT
C_{OUT_AEXT}
Powertrain (Cont.)
Effective value at 47.5 V_OUT
Excessive capacitance may drive module into
SC protection
C_{OUT_AEXT} Max = N * 0.5*C_{OUT_EXT} Max
25.6
µF
0
100
µF
Auto Restart Time
t_{AUTO_RESTART}
Powertrain Protection
Startup into a persistent fault condition.
Non-Latching fault detection given V_IN > V_{IN_UVLO+,}
Module will ignore attempts to re-enable during time off
292.5
357.5 ms
Input overvoltage lockout threshold
VIN_OVLO+
430
440
450
V
Input overvoltage recovery threshold
VIN_OVLO-
420
430
440
V
Input overvoltage lockout hysteresis
VIN_OVLO_HYST
10
V
Overvoltage lockout response time
Soft-Start time
t_OVLO
t_SOFT-START
From powertrain active
Fast Current limit protection disabled during Soft-Start
10
µs
1
ms
Output overcurrent trip threshold
Overcurrent Response Time Constant
Short circuit protection trip threshold
Short circuit protection response time
Overtemperature shutdown threshold
I_OCP
t_OCP
Effective internal RC filter
I_SCP
t_SCP
t_OTP
Temperature sensor located inside controller IC
28
37
3.2
45
1
125
50
A
ms
A
µs
ºC
Powertrain Supervisory Limits
Input overvoltage lockout threshold
V_{IN_OVLO+}
420
434.5
450
V
Input overvoltage recovery threshold
V_{IN_OVLO-}
405
424
440
V
Input overvoltage lockout hysteresis
V_{IN_OVLO_HYST}
10.5
V
Overvoltage lockout response time
t_OVLO
100
µs
Input undervoltage lockout threshold
V_{IN_UVLO-}
220
235
250
V
Input undervoltage recovery threshold
V_{IN_UVLO+}
230
245
260
V
Input undervoltage lockout hysteresis V_{IN_UVLO_HYST}
15
V
Undervoltage lockout response time
Undervoltage startup delay
t_UVLO
t_{UVLO+_DELAY}
From V_IN = V_{IN_UVLO+} to powertrain active,
EN floating, (i.e One time Startup delay from
application of V_IN to V_OUT)
100
µs
20
ms
Output Overcurrent Trip Threshold
I_OCP
33
35
37
A
Overcurrent Response Time Constant
t_OCP
1
ms
Overtemperature shutdown threshold
t_OTP
Temperature sensor located inside controller IC
125
ºC
Undertemperature shutdown threshold
Undertemperature restart time
t_UTP
t_{UTP_RESTART}
Temperature sensor located inside controller IC
Startup into a persistent fault condition. Non-Latching
fault detection given V_IN > V_{IN_UVLO+}
-45
ºC
3
s
BCM^® Bus Converter
Page 6 of 23
Rev 1.4
05/2015
vicorpower.com
800 927.9474