BCM380y475x1K2A31
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
INTERNAL
≤
125°C (T-Grade); All other specifications are at T
INTERNAL
= 25ºC unless otherwise noted.
Attribute
Symbol
Conditions / Notes
Powertrain (Cont.)
Effective value at 47.5 V
OUT
Excessive capacitance may drive module into
SC protection
C
OUT_AEXT
Max = N * 0.5*C
OUT_EXT
Max
Powertrain Protection
Auto Restart Time
Input overvoltage lockout threshold
Input overvoltage recovery threshold
Input overvoltage lockout hysteresis
Overvoltage lockout response time
Soft-Start time
Output overcurrent trip threshold
Overcurrent Response Time Constant
Short circuit protection trip threshold
Short circuit protection response time
Overtemperature shutdown threshold
t
AUTO_RESTART
V
IN
_
OVLO
+
V
IN
_
OVLO
-
V
IN
_
OVLO
_
HYST
t
OVLO
t
SOFT-START
I
OCP
t
OCP
I
SCP
t
SCP
t
OTP
V
IN_OVLO+
V
IN_OVLO-
V
IN_OVLO_HYST
t
OVLO
V
IN_UVLO-
V
IN_UVLO+
V
IN_UVLO_HYST
t
UVLO
t
UVLO+_DELAY
I
OCP
t
OCP
t
OTP
t
UTP
t
UTP_RESTART
Temperature sensor located inside controller IC
Temperature sensor located inside controller IC
Startup into a persistent fault condition. Non-Latching
fault detection given V
IN
> V
IN_UVLO+
3
125
-45
From V
IN
= V
IN_UVLO+
to powertrain active,
EN floating, (i.e One time Startup delay from
application of V
IN
to V
OUT
)
33
220
230
Temperature sensor located inside controller IC
Powertrain Supervisory Limits
Input overvoltage lockout threshold
Input overvoltage recovery threshold
Input overvoltage lockout hysteresis
Overvoltage lockout response time
Input undervoltage lockout threshold
Input undervoltage recovery threshold
Input undervoltage lockout hysteresis
Undervoltage lockout response time
Undervoltage startup delay
Output Overcurrent Trip Threshold
Overcurrent Response Time Constant
Overtemperature shutdown threshold
Undertemperature shutdown threshold
Undertemperature restart time
420
405
434.5
424
10.5
100
235
245
15
100
20
35
1
37
250
260
450
440
V
V
V
µs
V
V
V
µs
ms
A
ms
ºC
ºC
s
125
Effective internal RC filter
45
1
From powertrain active
Fast Current limit protection disabled during Soft-Start
28
Startup into a persistent fault condition.
Non-Latching fault detection given V
IN
> V
IN_UVLO+,
Module will ignore attempts to re-enable during time off
292.5
357.5
ms
Min
Typ
Max
Unit
Effective Output capacitance (internal)
Effective Output capacitance (external)
Array Maximum external output
capacitance
C
OUT
_
INT
C
OUT
_
EXT
C
OUT_AEXT
25.6
0
100
µF
µF
430
420
440
430
10
10
1
37
3.2
450
440
V
V
V
µs
ms
50
A
ms
A
µs
ºC
BCM
®
Bus Converter
Page 6 of 23
Rev 1.4
05/2015
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