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NCP1083
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9
Table 3. OPERATING CONDITIONS
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
PASSSWITCH AND CURRENT LIMITS
Ron
Passswitch Rdson
Max Ron specified at Tj = 130癈

0.6
1.2
W
I_Rinrush1
Rinrush = 150 kW (Note 11)
Measured at RTNVPORTN
1,2
 = 3 V
95
125
155
mA
I_Rinrush2
Rinrush = 57.6 kW (Note 11)
Measured at RTNVPORTN
1,2
 = 3 V
260
310
360
mA
I_Rilim1
Rilim1 = 84.5 kW (Note 11)
Current limit threshold
450
510
570
mA
I_Rilim2
Rilim1 = 66.5 kW (Note 11)
Current limit threshold
600
645
690
mA
I_Rilim3
Rilim1 = 55.6 kW (Note 11)
Current limit threshold
720
770
820
mA
I_Rilim4
Rilim1 = 38.3 kW (Note 11)
Current limit threshold
970
1100
1230
mA
INRUSH AND ILIM1 CURRENT LIMIT TRANSITION
Vds_pgood
VDS required for power good sta-
tus
RTNVPORTN
1,2
 falling; voltage
with respect to VPORTN
1,2
0.8
1
1.2
V
Vds_pgood_hyst
VDS hysteresis required for power
good status
Voltage with respect to VPORTN
1,2

8.2

V
VDDH REGULATOR
VDDH_reg
Regulator output voltage
(Notes 12 and 13)
Ivddh_load + Ivddl_load < 10 mA
with Ivddl_load < 2.25 mA and
12.5 V < VPORTP  ARTN < 57 V
8.4
9
9.6
V
VDDH_Off
Regulator turnoff voltage
For information only
VDDH_reg + 0.5 V
V
VDDH_lim
VDDH regulator current limit
(Notes 12 and 13)
13

26
mA
VDDH_Por_R
VDDH POR level (rising)
7.3

8.3
V
VDDH_Por_F
VDDH POR level (falling)
6

7
V
VDDH_ovlo
VDDH overvoltage level (rising)
16

18.5
V
VDDL REGULATOR
VDDL_reg
Regulator output voltage
(Notes 12 and 13)
Ivddl_load < 2.25 mA with
Ivddh_load + Ivddl_load < 10 mA and
12.5 V < VPORTP  ARTN < 57 V
3.05
3.3
3.55
V
VDDL_Por_R
VDDL POR level (rising)
VDDL
 0.2

VDDL
 0.02
V
VDDL_Por_F
VDDL POR level (falling)
2.5

2.9
V
GATE DRIVER
Gate_Tr
GATE rise time (1090%)
Cload = 2 nF, VDDHreg = 9 V


50
ns
Gate_Tf
GATE fall time (9010%)
Cload = 2 nF, VDDHreg = 9 V


50
ns
PWM COMPARATOR
VCOMP
COMP control voltage range
For information only
1.3

3
V
ERROR AMPLIFIER
Vbg_fb
Reference voltage
Voltage with respect to ARTN
1.15
1.2
1.25
V
Av_ol
DC open loop gain
For information only

80

dB
GBW
Error amplifier GBW
For information only
1


MHz
11.The current value corresponds to the PoEPD input current (the current flowing in the external Rdet and the quiescent current of the device
are included). Resistors are assumed to have 1% accuracy.
12.Power dissipation must be considered. Load on VDDH and VDDL must be limited especially if VDDH is not powered by an auxiliary winding.
13.Ivddl_load = current flowing out of the VDDL pin.
Ivddh_load = current flowing out of the VDDH pin + current delivered to the Gate Driver (function of the frequency, VDDH voltage & MOSFET
gate capacitance).
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