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
≤
T
CASE
≤
100°C (T-Grade); all other specifications are at T
CASE
= 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)
Effective LO Side Capacitance
(Internal)
Rated LO Side Capacitance
(External)
C
HI_INT
C
LO_INT
C
LO_OUT_EXT
Effective value at 54V
HI_DC
Effective value at 13.5V
LO_DC
Excessive capacitance may drive module into short
circuit protection
C
LO_OUT_AEXT
Max = N * 0.5 * C
LO_OUT_EXT MAX
, where
N = the number of units in parallel
11.2
140
1000
µF
µF
µF
Rated LO Side Capacitance (External),
C
LO_OUT_AEXT
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.
Auto Restart Time
HI Side Overvoltage
Lockout Threshold
HI Side Overvoltage
Recovery Threshold
HI Side Overvoltage
Lockout Hysteresis
HI Side Overvoltage
Lockout Response Time
HI Side Soft-Start Time
LO Side Overcurrent Trip Threshold
LO Side Overcurrent
Response Time Constant
LO Side Short Circuit
Protection Trip Threshold
LO Side Short Circuit
Protection Response Time
Overtemperature
Shutdown Threshold
t
AUTO_RESTART
V
HI_OVLO+
V
HI_OVLO–
V
HI_OVLO_HYST
t
HI_OVLO
t
HI_SOFT-START
I
LO_OUT_OCP
t
LO_OUT_OCP
I
LO_OUT_SCP
t
LO_OUT_SCP
t
OTP+
Internal
125
Effective internal RC filter
195
1
From powertrain active. Fast current limit protection
disabled during soft start
143
Start up into a persistent fault condition. Non-latching
fault detection given V
HI_DC
> V
HI_UVLO+
490
63
61
67
65
2
100
1
180
3
225
560
71
69
ms
V
V
V
µs
ms
A
ms
A
µs
°C
BCM
®
in a VIA Package
Page 7 of 41
Rev 2.0
02/2018
VICOR [ VICOR CORPORATION ]
