BCM400y500x1K8A31
Electrical Specifications (Cont.)
Specifications apply over all line and 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.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
Powertrain (Cont.)
Effective value at 50 VOUT
Effective Output capacitance (internal)
Effective Output capacitance (external)
COUT_INT
25.6
µF
µF
Excessive capacitance may drive module into
SC protection
COUT_EXT
0
100
Array Maximum external output
capacitance
COUT_AEXT
COUT_AEXT Max = N * 0.5*COUT_EXT Max
Powertrain Protection
Startup into a persistent fault condition.
292.5
357.5
ms
tAUTO_RESTART
Non-Latching fault detection given VIN > VIN_UVLO+,
Module will ignore attempts to re-enable during time off
Auto Restart Time
Input overvoltage lockout threshold
Input overvoltage recovery threshold
Input overvoltage lockout hysteresis
Overvoltage lockout response time
VIN_OVLO+
VIN_OVLO-
VIN_OVLO_HYST
tOVLO
430
420
440
430
10
450
440
V
V
V
10
µs
From powertrain active
Soft-Start time
tSOFT-START
1
ms
Fast Current limit protection disabled during Soft-Start
Output overcurrent trip threshold
Overcurrent Response Time Constant
Short circuit protection trip threshold
Short circuit protection response time
Overtemperature shutdown threshold
IOCP
tOCP
ISCP
tSCP
tOTP
37.5
52
47
59
A
ms
A
Effective internal RC filter
3.6
1
µs
ºC
Temperature sensor located inside controller IC
125
Powertrain Supervisory Limits
Input overvoltage lockout threshold
Input overvoltage recovery threshold
Input overvoltage lockout hysteresis
Overvoltage lockout response time
Input undervoltage lockout threshold
Input undervoltage recovery threshold
Input undervoltage lockout hysteresis
Undervoltage lockout response time
VIN_OVLO+
VIN_OVLO-
VIN_OVLO_HYST
tOVLO
420
405
436
426
10
450
440
V
V
V
100
226
244
15
µs
V
VIN_UVLO-
VIN_UVLO+
VIN_UVLO_HYST
tUVLO
200
225
250
259
V
V
100
µs
From VIN = VIN_UVLO+ to powertrain active,
EN floating, (i.e One time Startup delay from
Undervoltage startup delay
tUVLO+_DELAY
20
ms
application of VIN to VOUT
)
Output Overcurrent Trip Threshold
Overcurrent Response Time Constant
Overtemperature shutdown threshold
Undertemperature shutdown threshold
IOCP
tOCP
tOTP
tUTP
42.5
45
2
47.5
-45
A
ms
ºC
ºC
Temperature sensor located inside controller IC
125
Temperature sensor located inside controller IC
Startup into a persistent fault condition. Non-Latching
fault detection given VIN > VIN_UVLO+
Undertemperature restart time
tUTP_RESTART
3
s
BCM® Bus Converter
Page 6 of 23
Rev 1.3
vicorpower.com
800 927.9474
05/2015
VICOR [ VICOR CORPORATION ]
