NCP1377_06 Datasheet, PDF (4/16 Pages) ON Semiconductor – PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation

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
Pin Symbol
Min
Typ
Max Unit
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
6
VCC_ON
11.6
6
VCC_OFF
7.0
6
VCC_latch
−
6
ICC1
−
12.5
13.7
V
7.5
8.2
V
5.6
−
V
1.0
1.3
mA
(Note 1)
Internal IC Consumption, 1.0 nF Output Load on Pin 5, F_SW = 60 kHz
6
ICC2
−
1.6
2.0
mA
(Note 1)
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
6
ICC3
−
8
IC1
2.4
8
IC2
−
8
I_HVLeak
−
5
T_r
−
5
T_f
−
5
R_OH
12
5
R_OL
5.0
3
I_IB
−
3
I_Limit
0.9
3
T_DEL
−
3
T_LEB
−
3
Iskip
−
220
−
mA
4.0
6.0
mA
4.5
−
mA
30
70
mA
40
−
ns
20
−
ns
20
36
W
10
19
W
0.02
−
mA
1.0
1.1
V
100
160
ns
380
−
ns
200
−
mA
OVERVOLTAGE SECTION
Sampling Delay After ON Time
NCP1377
1
T_sample
−
4.5
−
ms
NCP1377B
1
−
1.5
−
OVP Internal Reference Level
FEEDBACK SECTION
1
V_ref
6.4
7.2
8.0
V
Internal Pullup Resistor
2
Rup
−
20
−
kW
Pin 3 to Current Setpoint Division Ratio
−
Iratio
−
3.3
−
−
Internal Soft−Start
−
Tss
−
1.0
−
ms
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
1
V_th
1
V_H
1
VC_H
1
VC_L
1
R_int
1
T_dem
1
Tout
35
−
8.0
−0.9
−
−
−
50
20
10
−0.7
28
210
5.0
90
mV
−
mV
V
12
−0.5
−
kW
−
ns
−
ms
Internal Input Capacitance at Vpin 1 = 1.0 V
1
C_par
−
10
−
pF
Minimum T_OFF (Internal Blanking Delay After T_ON)
NCP1377
1
T_blank
−
8.0
−
ms
NCP1377B
1
−
3.0
−
1. Max value at T_j = 0°C, please see characterization curves.
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