NCP1212_05 ONSEMI [ON Semiconductor], NCP1212_05 Datasheet - Page 10
NCP1212_05
Manufacturer Part Number
NCP1212_05
Description
Current Mode PWM Controller for Both Forward and Flyback Converters
Manufacturer
ONSEMI [ON Semiconductor]
Datasheet
1.NCP1212_05.pdf
(22 pages)
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−0.5
3.5
2.5
1.5
0.5
4
3
2
1
0
0
Figure 27. Rise Time of Gate Drive Waveform
Figure 29. Supply Current vs. Supply Voltage
(Duty Cycle = 82% and Output Load = 1 nF)
Ramp up to 24 V
Ramp down from 24 V
5
V
CC
, SUPPLY VOLTAGE (V)
(C
10
L
= 1 nF)
300
250
200
150
100
Figure 31. Switch Frequency vs. C
50
0
400
15
20
600
C
T
http://onsemi.com
, PIN CAPACITANCE (pF)
NCP1212
25
10
800
−0.5
3.5
2.5
1.5
0.5
3
2
1
0
4
0
48% DUTY −CYCLE
82% DUTY CYCLE
T
Figure 30. Supply Current vs. Supply Voltage
Figure 28. Fall Time of Gate Drive Waveform
(Duty Cycle = 48% and Output Load = 1 nF)
Pin Capacitance
1000
Ramp up to 24 V
Ramp down from 24 V
5
V
CC
, SUPPLY VOLTAGE (V)
1200
10
(C
L
= 1 nF)
15
20
25
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