NCP1280DR2 데이터 시트보기 (PDF) - ON Semiconductor
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NCP1280DR2 Datasheet PDF : 18 Pages
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NCP1280
ELECTRICAL CHARACTERISTICS (Vin = 82 V, VAUX = 12 V, VEA = 2 V, RT = 101 kW, CCSKIP = 6800 pF,
RD = 60.4 kW, RFF = 1.0 MW, for typical values TJ = 25°C, for min/max values, TJ = −40°C to 125°C, unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
STARTUP CONTROL AND VAUX REGULATOR
VAUX Regulation
Startup Threshold/VAUX Regulation Peak (VAUX increasing)
Minimum Operating VAUX Valley Voltage After Turn−On
Hysteresis
Minimum Startup Voltage (Pin 1)
ISTART = 1.5 mA, VAUX = VAUX(on) − 0.2 V, IREF = 0 A
VAUX(on)
VAUX(off)
VH
VSTART(min)
10.5
6.6
−
−
11.0
7.0
4.0
−
11.5
7.4
−
25
Startup Circuit Output Current
VAUX = 0 V
TJ = 25°C
TJ = −40°C to 125°C
VAUX = VAUX(on) − 0.2 V
TJ = 25°C
TJ = −40°C to 125°C
ISTART
13
17.5
21
10
−
25
10
13.8
17
8
−
19
Startup Circuit Off−State Leakage Current (Vin = 700 V)
TJ = 25°C
TJ = −40°C to 125°C
ISTART(off)
−
−
23
50
−
100
Startup Circuit Breakdown Voltage (Note 2)
ISTART(off) = 50 mA, TJ = 25°C
V(BR)DS
700
−
−
Auxiliary Supply Current After VAUX Turn−On
Outputs Disabled
VEA = 0 V
VUV/OV = 0.7 V
Outputs Enabled
LINE UNDER/OVERVOLTAGE DETECTOR
IAUX1
−
2.7
5.0
IAUX2
−
1.3
2.5
IAUX3
−
4.6
6.5
Undervoltage Threshold (Vin Increasing)
Undervoltage Hysteresis
Overvoltage Threshold (Vin Increasing)
Overvoltage Hysteresis
Undervoltage Propagation Delay to Output
Overvoltage Propagation Delay to Output
CURRENT LIMIT
VUV
VUV(H)
VOV
VOV(H)
tUV
tOV
1.40
0.080
3.47
−
−
−
1.52
0.098
3.61
0.145
250
160
1.64
0.120
3.75
−
−
−
Cycle by Cycle Threshold Voltage
Propagation Delay to Output (VEA = 2.0 V)
VCS = ILIM1 to 2.0 V, measured when VOUT reaches 0.5 VOH
ILIM1
tILIM
0.44
0.48
0.52
−
90
150
Cycle Skip Threshold Voltage
Cycle Skip Charge Current (VCSKIP = 0 V)
2. Guaranteed by design only.
ILIM2
ICSKIP
0.54
8.0
0.57
0.62
12.3
15
Unit
V
V
mA
mA
V
mA
V
V
V
V
ns
ns
V
ns
V
mA
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