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參數(shù)資料
| 型號(hào)： | AN-16 |
| 英文描述： | TOPSwitch Flyback Design Methodology |
| 中文描述： | TOPSwitch的反激式設(shè)計(jì)方法 |
| 文件頁數(shù)： | 8/32頁 |
| 文件大?。?/td> | 247K |
| 代理商： | AN-16 |
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AN-16
A
6/96
8
Step 16 to Step 22.
Check B
M
, CMA and L
g
. Iterate if necessary by changing L, N
S
or core/bobbin until within specified range:
Set safety margin, M. Use 3 mm (118 mils) for margin wound
with 230 VAC or universal input and 1.5 mm (59 mils) for
110/115 VAC input. Set to zero for triple insulated secondary.
Maximum flux density, B
: 3000
≥
B
M
≥
2000; in Gauss
Gap length, L
: L
≥
0.051 mm
Primary winding current capacity, CMA: 500
≥
CMA
≥
200;
in circular mils per Amp
Iterate by changing L, N
, core/bobbin according to Table 6
Primary minimum conductor diameter, DIA: in mm
Primary maximum wire outside diameter, OD: in mm
(B28)
(D48)
(D51)
(D58)
(D55)
(D53)
Step 23.
Determine secondary parameters I
SP,
I
SRMS
, I
RIPPLE
, DIA
S,
OD
S
:
Secondary Peak current, I
SP
: in Amps
Secondary RMS current, I
: in Amps
Output capacitor ripple current, I
: in Amps
Secondary minimum conductor diameter, DIA
: in mm
Secondary maximum wire outside diameter, OD
S
: in mm
(D61)
(D62)
(D64)
(D68)
(D69)
Step 24.
Determine maximum peak inverse voltages PIV
S
, PIV
B
for secondary and bias windings:
Secondary winding maximum peak inverse voltage PIV
: in Volts
Bias winding maximum peak inverse voltage PIV
B
: in Volts
(D74)
(D75)
Step 25.
Select clamp Zener and blocking diode for primary clamping per Table 7 based on input voltage and V
CLO
(from Step 4):
Notes: 1. P6KE91:
P6KE200:
BYV26B:
BYV26C:
2. Ishizuka 180V Zener may be used for lower power TOP210, TOP200, TOP201 applications
91V/5W; Motorola
200V/5W; Motorola
400V/1A, UFR; Philips
600V/1A, UFR; Philips
Input (VAC)
V
CLO
(V)
Zener
Diode
100/115
Universal
230
90
200
200
P6KE91
P6KE200
P6KE200
BYV26B
BYV26C
BYV26C
Table 7
B
M
-
↓
↓
L
g
CMA
-
↑
↑
L
N
S
Core
↑
↑
↑
↑
↓
↑
(B29)
(B30)
(B24/25/26/27)
Table 6
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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