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NCP1280_05 Datasheet(数据表) 6 Page - ON Semiconductor

部件型号  NCP1280
说明  Active Clamp Voltage Mode PWM Controller for Off-Line Applications
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

NCP1280 Datasheet(HTML) 6 Page - ON Semiconductor

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NCP1280
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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
Unit
OSCILLATOR
Frequency (RT = 101 kW)
TJ = 25°C
TJ = −40°C to 125°C
fOSC1
285
280
300
315
320
kHz
Frequency (RT = 220 kW, VEA = 1.0 V)
TJ = 25°C
TJ = −40°C to 125°C
fOSC2
142
140
150
158
160
kHz
MAXIMUM DUTY CYCLE COMPARATOR
Maximum Duty Cycle (VEA = 3.0 V, TJ = 25°C)
RP = 0 W, RMDP = open
RP = open, RMDP = open
DCMAX
57
75
62
80
66
85
%
Open Circuit Voltage
VDCMAX
0.40
0.47
0.60
V
SOFT−START
Charge Current (VSS = 1.0 V)
ISS(C)
5.0
6.2
7.4
mA
Discharge Current (VSS = 5.0 V, VUV/OV = 0 V)
ISS(D)
20
52.5
mA
PWM COMPARATOR
Input Resistance (V1 = 1.25 V, V2 = 1.50 V)
RIN(VEA) = (V2 − V1)/(I2 − I1)
RIN(VEA)
8.0
22
60
k
W
Lower Input Threshold
VEA(L)
0.3
0.7
0.9
V
Delay to Output (from VOH to 0.5 VOH)
tPWM
200
ns
5.0 V REFERENCE
Output Voltage (IREF = 0 mA)
TJ = 25°C
TJ = −40°C to 125°C
VREF
4.9
4.8
5.0
5.1
5.1
V
Load Regulation (IREF = 0 to 6 mA)
VREF(Load)
10
50
mV
Line Regulation (VAUX = 7.5 to 16 V)
VREF(Line)
50
100
mV
CONTROL OUTPUTS
Output Voltage (IOUT = 0 mA)
Low State
High State
VOL
VOH
0.25
11.8
V
Overlap Delay
RD = 1 MW
Leading
Trailing
RD = 60 kW
Leading
Trailing
tD
50
32
200
170
90
72
130
130
ns
Drive Resistance (Vin = 15 V)
Sink (VEA = 0 V, VOUT = 2 V)
Source (VEA = 3 V, VOUT = 10 V)
RSNK
RSRC
20
50
40
90
80
170
W
Rise Time (CL = 100 pF, 10% to 90% of VOH)
ton
30
ns
Fall Time (CL = 100 pF, 90% to 10% of VOH)
toff
12
ns




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