Datasheet

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DBQ0135V2 FUNCTIONAL SPECIFICATIONS (CONT.)
PMBus
Conditions ➀
Minimum Typical/Nominal Maximum Units
PMBus GENERAL
PMBus REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used.
Bus speed 400 kHz
Logic high input 2 3.3 Vdc
Logic low input 0 0.8 Vdc
Logic high output 2.4 3.6 Vdc
Logic low output -0.1 0.4 Vdc
PMBus ADDRESSING
If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBus address = 8x(SA0 value) + (SA1 value). SA0,
SA1 value VS resistor connected to GND.
0 10 k
1 22 k
2 33 k
3 47 k
4 68 k
5 100 k
6 150 k
7 220 k
PMBus MONITORING ACCURACY
VIN_READ -2.5 2.5 %
VOUT_READ -1 1 %
IOUT_READ -1 1 A
TEMP_READ -5 5 °C
DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION)
Fault Protection Specifi cations
Output Voltage, Over Voltage protection, OVP Factory default 14.4 V
VOUT_OV_FAULT_LIMIT, Confi gurable via PMBus >VOUT_OV_WARM_LIMIT 8.1 15.6 V
Restart delay (default, Confi gurable via PMBus) 500 mS
VIN_OV_FAULT_LIMIT (Confi gurable via
PMBus) ➃
>VIN_OV_WARM_LIMIT 34 110 V
Restart delay (default, Confi gurable via PMBus) 200 mS
Input Voltage, Input Under Voltage Protec-
tion, UVLO
Factory default 32 V
Setpoint accuracy -2 2 %
VIN_UV_FAULT_LIMIT (Confi gurable via
PMBus) ➃
<VIN_UV_WARM_LIMIT <VIN_OV_FAULT_LIMIT 32 75 V
Restart delay (default, Confi gurable via PMBus) 200 mS
Over Current Protection, OCP Setpoint accuracy (Io) -3 3 %
(factory default) 42 A
IOUT_OC_FAULT_LIMIT (Confi gurable via
PMBus) ➃
>IOUT_OC_WARN_LIMT 0 50 A
Restart delay (default, Confi gurable via PMBus) 500 mS
Over Temperature Protection, OTP OT_FAULT_LIMIT (factory default) 120 °C
OT_FAULT_LIMIT (Confi gurable via PMBus) ➃
>OT_WARM_LIMIT 0 30 150 °C
OTP accuracy (factory default) 5 5 °C
Restart delay (default, Confi gurable via PMBus) 500 mS
DBQ/DVQ Series
420W Digital Fully Regulated Intermediate
DC-DC Bus Converter
MDC_DBQ Series.B02Δ Page 14 of 31