参数资料
型号: NCP1271P100G
厂商: ON Semiconductor
文件页数: 18/21页
文件大小: 0K
描述: IC CTRLR PWM CM OVP OTP HV 7DIP
标准包装: 1,000
系列: Soft-Skip™
输出隔离: 隔离
频率范围: 85kHz ~ 107kHz
输入电压: 10 V ~ 20 V
工作温度: -40°C ~ 125°C
封装/外壳: 8-DIP(0.300",7.62mm),7 引线
供应商设备封装: 7-PDIP
包装: 管件
NCP1271
Fuse 2A
85 to
265 Vac
D1 ? D4
1N5406 x 4
C5 10 nF
+
19 V / 3 A
?
T1
E3506 ? A
IC1 NCP1271A
R2 10
D10 MZP4746A (18V)
D7 MURS160
R6 10
R7 511
R8
0.25 / 1W
D8 MBR3100
IC4 TL431
C12
0.15 uF
Flyback transformer :
Cooper CTX22 ? 17179
Lp = 180uH, leakage 2.5uH max
np : ns : naux = 30 : 6 : 5
Hi ? pot 3600Vac for 1 sec, primary to secondary
Hi ? pot 8500Vac for 1 sec, winding to core
C11 1nF/ 1000V
Figure 42. 57 W Example Circuit Using NCP1271
Figure 42 shows a typical application circuit using the
NCP1271. The standby power consumption of the circuit
is 83 mW with 230 Vac input. The details of the application
95
90 120 Vac
85
230 Vac
80
75
70
65
circuit are described in application note AND8242/D. The
efficiency of the circuit at light load up to full load is shown
in Figure 43.
60
0
10
20
30
40
50
60
P out (W)
Figure 43. Efficiency of the NCP1271 Demo
Board at Nominal Line Voltages
http://onsemi.com
18
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