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NCP1651DR2

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
NCP1651
http://onsemi.com
7
Figure 2. Switching Timing Diagram
OSCILLATOR
BLANKING PULSE
OSCILLATOR
RAMP
GND
4 V
LATCH Q
DRIVE
PWM
GND
0.5 V
AC Error Amp + Ramp Comp + Inductor Current
FB/SD
Figure 3. Divide-by-Eight Counter Timing Diagram
SHUTDOWNCURRENT LIMITSTARTUP
SHUTDOWN
FB/SD
OUTPUT
CURRENT
STARTUP
ENABLE
V
CC
10.8 V
9.8 V
ON
OFF
MAX
0
0
0.5 V
1 23 7 8 7 7 7 87 8
7
NCP1651
http://onsemi.com
8
Typical Performance Characteristics
(Test circuits are located in the document TND308/D)
5002001000
Figure 4. Current Sense Amplifier Gain
I
S+
(mV)
5
0
V
out
(V)
300 400
1
2
3
4
PIN 7
PIN 6
Figure 5. FB/SD V-I Characteristics
16004002000
I
sink
(A)
12
0
V
pin
8
(V)
600 800
2
4
8
10
6
1000 1200 1400
-40°C
0°C
12420
Figure 6. Bias Current in Shutdown Mode
V
CC
(V)
0.9
0
CURRENT (mA)
68
0.1
0.2
0.3
0.7
125°C
Figure 7. Bias Current in Operating Mode
1500-50
TEMPERATURE (°C)
5.0
2.5
BIAS CURRENT (mA)
25
4.0
100
0.4
0.5
0.6
0.8
10
25°C
80°C
-25 50 75 125
3.0
3.5
4.5
V
CC
= 14 V
-40°C
0°C
1000101
Figure 8. Startup Current versus High Voltage
STARTUP PIN VOLTAGE (V)
9
0
STARTUP CURRENT, PIN 16 (mA)
100
1
2
3
7
125°C
Figure 9. Startup Leakage versus Temperature
150-25-50
TEMPERATURE (°C)
39
9.0
LEAKAGE CURRENT, PIN 16 (A)
25
19
50
4
5
6
8
25°C
80°C
0
14
29
75 100
24
34
125
NCP1651
http://onsemi.com
9
Typical Performance Characteristics
(Test circuits are located in the document TND308/D)
25-25-50
Figure 10. UVLO versus Temperature
TEMPERATURE (°C)
11.2
9.5
THRESHOLD (V)
75 100
9.8
10.2
10.5
TURN-ON
Figure 11. FB/SD Clamp Voltage versus V
CC
420
V
CC
(V)
1.5
0
CLAMP VOLTAGE, PIN 8 (V)
6
0.5
1.0
810120 50 125
10.8
TURN-OFF
5210
Figure 12. Reference Multiplier Gain
AC INPUT (V)
5
0
AC REF (V)
3
0.5
1
1.5
3.5
1.6 V
Figure 13. V
CC
Cap Charge Time
10,000101
CHARGE TIME (ms)
1000
1
V
CC
, CAPACITANCE (F)
100
10
1000
2
2.5
3
4
4
4.5
2.0 V
1.8 V
2.5 V
FB/SD = 3.0 V
100
1000101
Figure 14. C
T
versus Frequency
FREQUENCY (kHz)
100 k
100
C
T
(pF)
100
Figure 15. Ramp Peak versus Frequency
300500
FREQUENCY (kHz)
4.40
3.95
RAMP PEAK
150
4.15
1000
10 k
100
4.10
200 250
4.00
4.05
4.30
4.25
4.20
4.35
NOTE: Ramp Valley
Voltage is Zero for
All Frequencies
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

NCP1651DR2

Mfr. #:
Buy NCP1651DR2
Manufacturer:
ON Semiconductor
Description:
Power Factor Correction - PFC Single Stage PFC
Lifecycle:
New from this manufacturer.
Delivery:
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