NCP4303AMNTWG ON Semiconductor, NCP4303AMNTWG Datasheet - Page 25

• Manufacturer Part Number: NCP4303AMNTWG
• Description: Power Switch ICs - Power Distribution SEC SIDE SYNC RECT DRV
• Manufacturer: ON Semiconductor

Specifications of NCP4303AMNTWG

• Product Category: Power Switch ICs - Power Distribution

65 W Adapter Design Example
Application enters CCM mode for full load and Vin < 130
This is wide range input application that uses NCP4303A.
180
160
140
120
100
97
95
93
91
89
87
80
60
40
20
85
0
Figure 57. IC Power Consumption as a Function of Frequency for C
50
0
100
Function of Frequency for C
Figure 55. IC Power Consumption as a
1
150
OPERATING FREQUENCY (kHz)
R
ton_min
200
2
NCP4303B,
NCP4303A,
V
V
Figure 58.
CC
CC
= R
250
I
out
= 30 V
= 30 V
toff_min
3
(A)
800
700
600
500
400
300
200
100
NCP4303B,
V
300
0
CC
50
= 12 V
= 5 kW
350
NCP4303A,
4
V
100
load
CC
= 12 V
400
= 0 nF,
150
OPERATING FREQUENCY (kHz)
5
450
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200
NCP4303B,
V
CC
NCP4303B,
V
500
= 12 V
CC
6
250
25
= 30 V
300
Vac. Efficiency results measured on this application can be
seen in Figures 58 and 59. Application schematic of the 12
V/ 5.5 A adapter can be seen in Figure 60.
NCP4303A,
400
350
300
250
200
150
100
V
50
CC
0
92
91
90
89
88
87
86
85
50
= 30 V
350
0
NCP4303A,
V
CC
100
Function of Frequency for C
Figure 56. IC Power Consumption as a
400
= 12 V
load
1
150
NCP4303A,
V
OPERATING FREQUENCY (kHz)
450
CC
R
= 10 nF, R
ton_min
= 30 V
200
500
2
= R
Figure 59.
250
ton_min
I
out
toff_min
3
(A)
300
= R
= 5 kW
350
toff_min
NCP4303B,
V
load
4
CC
NCP4303A,
NCP4303B,
V
V
= 12 V
CC
CC
400
= 1 nF,
= 12 V
= 5 kW
= 30 V
5
450
500
6