BCM3814x60E15A3yzz
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 current telemetry is only available in forward operation. The input and output current reported value is not supported in reverse operation.
ACCURACY
(RATED RANGE)
FUNCTIONAL
REPORTING RANGE
UPDATE
RATE
ATTRIBUTE
REPORTED UNITS
PMBus™ READ COMMAND
(88h) READ_VIN
HI Side Voltage
HI Side Current
LO Side Voltage [d]
LO Side Current
LO Side Resistance
Temperature [e]
5% (LL – HL)
28 to 66V
–1 to 44A
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)
(89h) READ_IIN
(8Bh) READ_VOUT
5% (LL – HL)
7.0 to 16.55V
–4 to 176A
20% (10 – 20% of FL)
5% (20 – 133% of FL)
(8Ch) READ_IOUT
5% (50 – 100% of FL) at NL
10% (50 – 100% of FL) (LL – HL)
(D4h) READ_ROUT
500 to 3000µΩ
–55 to 130ºC
(8Dh) READ_TEMPERATURE_1
7°C (Full Range)
[d] Default READ LO Side Voltage returned when unit is disabled = –300V.
[e] Default READ Temperature returned when unit is disabled = –273°C.
Variable Parameters
• Factory setting of all Thresholds and Warning limits listed below are 100% of specified protection values.
• Variables can be written only when module is disabled with VHI < VHI_UVLO– and external bias (VDDB) applied.
• Module must remain in a disabled mode for 3ms after any changes to the variables below to allow sufficient time to commit changes to EEPROM.
FUNCTIONAL
REPORTING
RANGE
ACCURACY
(RATED RANGE)
DEFAULT
ATTRIBUTE
PMBusTM COMMAND
CONDITIONS / NOTES
VALUE
100%
100%
100%
100%
100%
100%
100%
0ms
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)
28 – 66V
28 – 66V
14 – 36V
0 – 44A
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 – 44A
Overtemperature
Protection Limit
Internal temperature
Internal temperature
7°C (Full Range)
7°C (Full Range)
50µs
0 – 125°C
0 – 125°C
0 – 100ms
Overtemperature
Warning Limit
(51h) OT_WARN_LIMIT
(60h) TON_DELAY
Additional time delay to the
undervoltage start-up delay
Turn On Delay
BCM® in a VIA Package
Page 10 of 41
Rev 2.0
02/2018
VICOR [ VICOR CORPORATION ]
