NCP1377, NCP1377B
ELECTRICAL CHARACTERISTICS
(For typical values T
J
= 25°C, for min/max values T
J
= 0°C to +125°C, Max T
J
= 150°C, V
CC
= 11 V unless otherwise noted.)
Characteristic
SUPPLY SECTION
V
CC
Increasing Level at which the Current Source Turns−Off
Minimum Operating Voltage after Turn−On
V
CC
Decreasing Level at which the Latchoff Phase Ends
Internal IC Consumption, No Output Load on Pin 5, F
SW
= 60 kHz
Internal IC Consumption, 1.0 nF Output Load on Pin 5, F
SW
= 60 kHz
Internal IC Consumption, Latchoff Phase, V
CC
= 6.0 V
INTERNAL STARTUP CURRENT SOURCE
High−Voltage Current Source, V
CC
= 10 V, V
pin8
= 50 V
High−Voltage Current Source, V
CC
= 0 V, V
pin8
= 50 V
Startup Leakage, V
pin8
= 500 V
DRIVE OUTPUT
Output Voltage Rise−Time @ CL = 1.0 nF, 10−90% of Output Signal
Output Voltage Fall−Time @ CL = 1.0 nF, 10−90% of Output Signal
Source Resistance
Sink Resistance
CURRENT COMPARATOR
Input Bias Current @ 1.0 V Input Level on Pin 3
Maximum Internal Current Setpoint
Propagation Delay from Current Detection to Gate OFF State
Leading Edge Blanking Duration
Internal Current Offset Injected on the CS Pin During OFF Time
OVERVOLTAGE SECTION
Sampling Delay After ON Time
OVP Internal Reference Level
FEEDBACK SECTION
Internal Pullup Resistor
Pin 3 to Current Setpoint Division Ratio
Internal Soft−Start
DEMAGNETIZATION DETECTION BLOCK
Input Threshold Voltage (Vpin 1 Decreasing)
Hysteresis (Vpin 1 Decreasing)
Input Clamp Voltage
High State (Ipin 1 = 3.0 mA)
Low State (Ipin 1 =
−2.0
mA)
Pin1 Internal Resistance
Demag Propagation Delay
Timeout After Last Demag Transition
Internal Input Capacitance at Vpin 1 = 1.0 V
Minimum T
OFF
(Internal Blanking Delay After T
ON
)
NCP1377
NCP1377B
1
1
1
1
1
1
1
1
1
1
V
th
V
H
VC
H
VC
L
R
int
T
dem
Tout
C
par
T
blank
35
−
8.0
−0.9
−
−
−
−
−
−
50
20
10
−0.7
28
210
5.0
10
8.0
3.0
90
−
12
−0.5
−
−
−
−
−
−
kW
ns
ms
pF
ms
mV
mV
V
2
−
−
Rup
Iratio
Tss
−
−
−
20
3.3
1.0
−
−
−
kW
−
ms
NCP1377
NCP1377B
1
1
1
T
sample
V
ref
−
−
6.4
4.5
1.5
7.2
−
−
8.0
ms
V
3
3
3
3
3
I
IB
I
Limit
T
DEL
T
LEB
Iskip
−
0.9
−
−
−
0.02
1.0
100
380
200
−
1.1
160
−
−
mA
V
ns
ns
mA
5
5
5
5
T
r
T
f
R
OH
R
OL
−
−
12
5.0
40
20
20
10
−
−
36
19
ns
ns
W
W
8
8
8
IC1
IC2
I
HVLeak
2.4
−
−
4.0
4.5
30
6.0
−
70
mA
mA
mA
6
6
6
6
6
6
VCC
ON
VCC
OFF
VCC
latch
ICC1
ICC2
ICC3
11.6
7.0
−
−
−
−
12.5
7.5
5.6
1.0
1.6
220
13.7
8.2
−
1.3
(Note 1)
2.0
(Note 1)
−
V
V
V
mA
mA
mA
Pin
Symbol
Min
Typ
Max
Unit
1. Max value at T
j
= 0°C, please see characterization curves.
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