參數(shù)資料
型號： NCP1014AP100G
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： VARISTOR 20VRMS 7MM RADIAL
中文描述： 1 A SWITCHING REGULATOR, 110 kHz SWITCHING FREQ-MAX, PDIP7
封裝： LEAD FREE, PLASTIC, DIP-8/7
文件頁數(shù)： 21/24頁
文件大?。?/td> 324K
代理商： NCP1014AP100G
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
http://onsemi.com
21
A 7.0 W NCP1013based Flyback Converter
Featuring Low Standby Power
Figure 30 depicts another typical application showing a
NCP101365 kHz operating in a 7.0 W converter up to
70
°
C of ambient temperature. We can increase the output
power since an auxiliary winding is used, the DSS is
disabled, and thus offering more room for the MOSFET. In
this application, the feedback is made via a TLV431 whose
low bias current (100 A min) helps to lower the noload
standby power.
Figure 30. A Typical Converter Delivering 7.0 W from a Universal Mains
1
8
2
3
4
7
5
V
CC
NC
NC
FB
GND
NC
D
Vbulk
C2
47 F/
450 V
+
1N4148
D4
R2
3.3 k
+ C10
33 F/25 V
R4
22
NCP1013P06
+100 F/10 V
C3
C9
1 nF
C8
10 nF
400 V
R7
100 k/
1 W
D3
MUR160
T1
12 V @
0.6 A
GND
D2
MBRS360T3
+
+
100 F/16 V
C7
+
C6 C8
470 F/16 V
R5
39 k
R3
1 k
IC1
SFH61562
C4
100 nF
IC2
TLV431
R6
4.3 k
C5
2.2 nF
Y1 Type
T1
Aux
L2
22 H
Measurements have been taken from a demonstration
board implementing the diagram in Figure 30 and the
following results were achieved, with either the auxiliary
winding in place or through the Dynamic SelfSupply:
Vin = 230 Vac, auxiliary winding, Pout = 0, Pin = 60 mW
Vin = 100 Vac, auxiliary winding, Pout = 0, Pin = 42 mW
Vin = 230 Vac, Dynamic SelfSupply, Pout = 0,
Pin = 300 mW
Vin = 100 Vac, Dynamic SelfSupply, Pout = 0,
Pin = 130 mW
Pout = 7.0 W, = 81% @ 230 Vac, with auxiliary winding
Pout = 7.0 W, = 81.3 @ 100 Vac, with auxiliary winding
For a quick evaluation of Figure 30 application example,
the following transformers are available from Coilcraft:
A9619C, Lp = 3.0 mH, Np:Ns = 1:0.1, 7.0 W
application on universal mains, including auxiliary winding,
NCP101365kHz.
A0032A, Lp = 6.0 mH, Np:Ns = 1:0.055, 10 W
application on European mains, DSS operation only,
NCP101365 kHz.
Coilcraft
1102 Silver Lake Road
CARY IL 60013
Email: info@coilcraft.com
Tel.: 8476396400
Fax.: 8476391469
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