Datasheet

Characteristics Conditions Min Typ Max Unit
C
o
Internal output capacitance 400 F
C
OUT
Total external output capacitance See Note 9 470 30 000 F
ESR range of capacitors
(per single capacitor)
See Note 9 5 30 m
V
tr1
Load transient peak
voltage deviation
(L to H/H to L)
Load step 25-75-25%
of maxI
O
Default confi guration
di/dt = 2 A/s
C
O
= 470 F (minimum external
capacitance) see Note 12
V
O
= 0.6 V 90 / 300
mV
V
O
= 1.0 V 120 / 300
V
O
= 1.8 V 160 / 305
V
O
= 3.3 V 230 / 315
t
tr1
Load transient recovery
time, Note 5
(L to H/H to L)
Load step 25-75-25%
of maxI
O
Default confi guration
di/dt = 2 A/s
C
O
= 470 F (minimum external
capacitance) see Note 12
V
O
= 0.6 V 70 / 100
s
V
O
= 1.0 V 100 / 100
V
O
= 1.8 V 100 / 100
V
O
= 3.3 V 100 / 100
f
s
Switching frequency 320 kHz
Switching frequency range PMBus confi gurable 200-640 kHz
Switching frequency set-point accuracy -5 5 %
Control Circuit PWM Duty Cycle 5 95 %
Minimum Sync Pulse Width 150 ns
Input Clock Frequency Drift Tolerance External clock source -13 13 %
Input Under Voltage Lockout,
UVLO
UVLO threshold 3.85 V
UVLO threshold range PMBus confi gurable 3.85-14 V
Set point accuracy -150 150 mV
UVLO hysteresis 0.35 V
UVLO hysteresis range PMBus confi gurable 0-10.15 V
Delay 2.5 s
Fault response See Note 3 Automatic restart, 70 ms
Input Over Voltage Protection,
IOVP
IOVP threshold 16 V
IOVP threshold range PMBus confi gurable 4.2-16 V
Set point accuracy -150 150 mV
IOVP hysteresis 1 V
IOVP hysteresis range PMBus confi gurable 0-11.8 V
Delay 2.5 s
Fault response See Note 3 Automatic restart, 70 ms
Power Good, PG,
See Note 2
PG threshold 90 % V
O
PG hysteresis 5% V
O
PG delay See Note 19 Direct after DLC ms
PG delay range PMBus confi gurable 0-500 s
Output voltage
Over/Under Voltage Protection,
OVP/UVP
UVP threshold 85 % V
O
UVP threshold range PMBus confi gurable 0-100 % V
O
UVP hysteresis 5% V
O
OVP threshold 115 % V
O
OVP threshold range PMBus confi gurable 100-115 % V
O
UVP/OVP response time 25 s
UVP/OVP
response time range
PMBus confi gurable 5-60 s
Fault response See Note 3 Automatic restart, 70 ms
Over Current Protection,
OCP
OCP threshold 60 A
OCP threshold range PMBus confi gurable 0-60 A
Protection delay, See Note 4 32 T
sw
Protection delay range PMBus confi gurable 1-32 T
sw
Fault response See Note 3 Automatic restart, 70 ms
OKDx-T/50-W12-C
50A Digital PoL DC-DC Converter Series
MDC_OKDx-T/50-W12-C.A04 Page 12 of 41
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