BCM4414xD1E2663yzz
Electrical Specifications (Cont.)
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.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
General Powertrain Specification – Forward Direction Operation (High Voltage Side to Low Voltage Side) Cont.
Effective HI Side Capacitance
(Internal)
CHI_INT
CLO_INT
Effective value at 384VHI_DC
Effective value at 24VLO_DC
0.4
µF
µF
µF
Effective LO Side Capacitance
(Internal)
100
Excessive capacitance may drive module into
short circuit protection
Rated LO Side Capacitance (External) CLO_OUT_EXT
1000
Rated LO Side Capacitance (External),
CLO_OUT_AEXT
CLO_OUT_AEXT Max = N * 0.5 * CLO_OUT_EXT MAX, where
N = the number of units in parallel
Parallel Array Operation
Powertrain Hardware Protection Specification – Forward Direction Operation (High Voltage Side to Low Voltage Side)
• These built-in powertrain protections are fixed in hardware and cannot be configured through PMBus™.
• When duplicated in supervisory limits, hardware protections serve a secondary role and become active when supervisory limits are
disabled through PMBus.
Start up into a persistent fault condition. Non-latching
fault detection given VHI_DC > VHI_UVLO+
Auto Restart Time
tAUTO_RESTART
VHI_OVLO+
VHI_OVLO–
490
420
410
560
450
440
ms
V
HI Side Overvoltage
Lockout Threshold
435
425
10
100
1
HI Side Overvoltage
Recovery Threshold
V
HI Side Overvoltage
Lockout Hysteresis
VHI_OVLO_HYST
tHI_OVLO
V
HI Side Overvoltage Lockout
Response Time
µs
ms
A
From powertrain active. Fast current limit protection
disabled during soft start
HI Side Soft-Start Time
tHI_SOFT-START
ILO_OUT_OCP
tLO_OUT_OCP
ILO_OUT_SCP
tLO_OUT_SCP
tOTP+
LO Side Overcurrent
Trip Threshold
75
94
84
3
110
LO Side Overcurrent
Response Time Constant
Effective internal RC filter
ms
A
LO Side Short Circuit
Protection Trip Threshold
LO Side Short Circuit
Protection Response Time
1
µs
°C
Overtemperature
Shutdown Threshold
Internal
125
BCM® in a VIA Package
Page 7 of 43
Rev 1.1
01/2018
VICOR [ VICOR CORPORATION ]
