參數(shù)資料
型號： AN-16
英文描述： TOPSwitch Flyback Design Methodology
中文描述： TOPSwitch的反激式設(shè)計方法
文件頁數(shù)： 9/32頁
文件大?。?/td> 247K
代理商： AN-16
A
6/96
AN-16
9
Step 26.
Select output rectifier per Table 8 such that:
V
R
≥
1.25 x PIV
; where PIV
is from Step 24 and V
is the rated reverse voltage of the rectifier diode
I
D
≥
3 x I
O
; where I
D
is the diode rated DC current and I
O
= P
O
/V
O
Step 27.
Select output capacitor based on I
RIPPLE
(from Step 23):
Capacitor ripple current specified @ 105
O
C, 100KHz must be equal or larger than I
where I
is from Step 23.
Use low ESR, electrolytic capacitor. Output switching ripple voltage is I
x ESR , where I
SP
is from Step 23.
Use parallel capacitors to increase ripple current capacity for high current outputs.
Examples:
Output
Output Capacitor
5V to 24V, 1A
330uF, 35V, low ESR, electrolytic
United Chemicon LXF35VB331M10X20LL
Nichicon UPL1V331MRH
Panasonic ECA-1VFQ331L
5V to 24V, 2A
1000uF, 35V, low ESR, electrolytic
UnitedChemicon LXF35VB102M12.5X30LL
Nichicon UPL1V102MRH
Panasonic ECA-1VFQ102L
Table 8
Rectifier Diode
V
R
(V) I
D
(A)
Manufacturer
Schottky 1N5819
40
40
45
45
45
100
100
200
200
200
100
200
100
200
100
200
200
200
1.0
3.0
7.5
10
16
1.0
1.0
1.0
1.0
2.0
3.0
3.0
4.0
4.0
8.0
8.0
8.0
20
Motorola
Motorola
Motorola
Motorola
Motorola
GI
Motorola
Motorola
GI
Philips, GI
GI
GI
Motorola
Motorola
Motorola
Motorola
Philips, GI
Philips
1N5822
MBR745
MBR1045
MBR1645
UF4002
MUR110
MUR120
UF4003
BYV27-200
UF5401
UF5402
MUR410
MUR420
MUR810
MUR820
BYW29-200
BYV32-200
UFR
相關(guān)PDF資料
PDF描述
AN-17 Flyback Transformer Design for TOPSwitch Power Supplies
AN-18 TOPSwitch Flyback Transformer Construction Guide
AN-19 TOPSwitch Flyback Power Supply Efficiency
AN-20 Transient Suppression Techniques for TOPSwitch Power Supplies
AN-22 OBSOLETE when inventory is depleted. 10% tolerance no l
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