BCM3814x60E10A5yzz
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 9VLO_DC
11.2
202
µF
µF
µF
Effective LO-Side Capacitance
(Internal)
Rated LO-Side Capacitance
(External)
Excessive capacitance may drive module into short
circuit protection
6000
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
180
195
125
204
3
240
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 2.1
07/2020