BCM3814x60E15A3yzz
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
CLO_OUT_EXT
CLO_OUT_AEXT
Effective value at 54VHI_DC
Effective value at 13.5VLO_DC
11.2
140
µF
µF
µF
Effective LO Side Capacitance
(Internal)
Rated LO Side Capacitance
(External)
Excessive capacitance may drive module into short
circuit protection
1000
Rated LO Side Capacitance (External),
Parallel Array Operation
CLO_OUT_AEXT Max = N * 0.5 * CLO_OUT_EXT MAX, where
N = the number of units in parallel
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
63
560
71
ms
V
HI Side Overvoltage
Lockout Threshold
67
65
2
HI Side Overvoltage
Recovery Threshold
61
69
V
HI Side Overvoltage
Lockout Hysteresis
VHI_OVLO_HYST
tHI_OVLO
V
HI Side Overvoltage
Lockout Response Time
100
1
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
143
195
125
180
3
225
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
BCM® in a VIA Package
Page 7 of 41
Rev 2.0
02/2018
VICOR [ VICOR CORPORATION ]
