BCM3814x60E10A5yzz
PMBus™ Reported Characteristics
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.
Monitored Telemetry
• The BCM communication version is not intended to be used without a Digital Supervisor.
DIGITAL SUPERVISOR
ACCURACY
(RATED RANGE)
FUNCTIONAL
REPORTING RANGE
UPDATE
RATE
ATTRIBUTE
REPORTED UNITS
PMBusTM READ COMMAND
HI Side Voltage
HI Side Current
LO Side Voltage[1]
LO Side Current
LO Side Resistance
Temperature[2]
(88h) READ_VIN
(89h) READ_IIN
5%(LL - HL)
28V to 66V
-1A to 34A
100µs
100µs
100µs
100µs
100ms
100ms
VACTUAL = VREPORTED x 10-1
IACTUAL = IREPORTED x 10-2
VACTUAL = VREPORTED x 10-1
IACTUAL = IREPORTED x 10-2
RACTUAL = RREPORTED x 10-5
TACTUAL = TREPORTED
20%(10 - 20% of FL)
5%(20 - 133% of FL)
(8Bh) READ_VOUT
5%(LL - HL)
4.7V to 11V
20%(10 - 20% of FL)
5%(20 - 133% of FL)
(8Ch) READ_IOUT
-6A to 204A
500u to 3000u
- 55ºC to 130ºC
5%(50 - 100% of FL) at NL
10%(50 - 100% of FL)(LL - HL)
(D4h) READ_ROUT
(8Dh) READ_TEMPERATURE_1
7°C(Full Range)
[1] Default READ LO Side Voltage returned when unit is disabled = -300V.
[2] Default READ Temperature returned when unit is disabled = -273°C.
Variable Parameter
• Factory setting of all below Thresholds and Warning limits are 100% of listed protection values.
• Variables can be written only when module is disabled either EN pulled low or VHI < VHI_UVLO-
.
• Module must remain in a disabled mode for 3ms after any changes to the below variables allowing ample time to commit changes to EEPROM.
FUNCTIONAL
REPORTING
RANGE
DIGITAL SUPERVISOR
ACCURACY
(RATED RANGE)
DEFAULT
VALUE
ATTRIBUTE
CONDITIONS / NOTES
PMBusTM COMMAND [3]
HI Side Overvoltage
Protection Limit
VHI_OVLO- is automatically 3%
lower than this set point
(55h) VIN_OV_FAULT_LIMIT
(57h) VIN_OV_WARN_LIMIT
(D7h) DISABLE_FAULTS
(5Bh) IIN_OC_FAULT_LIMIT
(5Dh) IIN_OC_WARN_LIMIT
(4Fh) OT_FAULT_LIMIT
5%(LL - HL)
5%(LL - HL)
5%(LL - HL)
28V to 66V
28V to 66V
28V or 66V
0 to 34A
100%
100%
100%
100%
100%
100%
100%
0ms
HI Side Overvoltage
Warning Limit
HI Side Undervoltage
Protection Limit
Can only be disabled to a preset
default value
HI Side Overcurrent
Protection Limit
20%(10 - 20% of FL)
5%(20 - 133% of FL)
HI Side Overcurrent
Warning Limit
20%(10 - 20% of FL)
5%(20 - 133% of FL)
0 to 34A
Overtemperature
Protection Limit
Internal Temperature
Internal Temperature
7°C(Full Range)
7°C( Full Range)
50µs
0 to 125°C
0 to 125°C
0 to 100ms
Overtemperature
Warning Limit
(51h) OT_WARN_LIMIT
(60h) TON_DELAY
Additional time delay to the
Undervoltage Startup Delay
Turn on Delay
[3] Refer to internal µc datasheet for complete list of supported commands.
BCM® in a VIA Package
Page 9 of 39
Rev 1.4
09/2016
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