BCM4414xH0E5035yzz
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 650VHI_DC
Effective value at 40.6VLO_DC
0.16
43.2
µF
µF
µF
µF
Effective LO-Side Capacitance
(Internal)
Excessive capacitance may drive module into short
circuit protection
Rated LO-Side Capacitance (External) CLO_OUT_EXT
470
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
235
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–
900
830
800
1000
860
830
20
1100
880
ms
V
HI-Side Overvoltage
Lockout Threshold
HI-Side Overvoltage
Recovery Threshold
850
V
HI-Side Overvoltage
Lockout Hysteresis
VHI_OVLO_HYST
tHI_OVLO
V
HI-Side Overvoltage
Lockout Response Time
10
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+
1
2
LO-Side Overcurrent Trip Threshold
37
55
50
70
LO-Side Overcurrent
Response Time Constant
Effective internal RC filter
3.6
ms
A
LO-Side Short Circuit
Protection Trip Threshold
Short-circuit protection (fast current limit)
is disabled at start up [b]
LO-Side Short Circuit
Protection Response Time
1
µs
°C
Overtemperature
Shut-Down Threshold
Internal
125
[b] At start up, short circuit protection is disabled. Soft-start current limit provides protection against pre-existing output shorts.
Soft-start mode ends when the output voltage reaches at least 90% of the final output voltage, and short-circuit protection is enabled when tHI_SOFT_START
expires. Shorts that occur after soft start ends but before tHI_SOFT_START expires may cause damage to the product and will require external protection.
BCM® in a VIA™ Package
Page 7 of 43
Rev 1.0
04/2019