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參數資料
| 型號： | STV9302A |
| 廠商： | 意法半導體 |
| 英文描述： | VERTICAL DEFLECTION OUTPUT FOR MONITOR / TV 2 App / 60 V WITH FLYBACK GENERATOR |
| 中文描述： | 用于顯示器垂直偏轉輸出/電視2應用/ 60反激發(fā)電機V |
| 文件頁數： | 9/15頁 |
| 文件大?。?/td> | 327K |
| 代理商： | STV9302A |
9/15
STV9302A
Application Hints
4.3.1
Centring
When idle, both driver outputs provide i
cm
and the yoke current should be null (R
1
is negligible),
hence:
4.3.2
Peak Current
Scanning current should be I
P
when positive and negative driver outputs provide respectively
i
cm
- i
p
and i
cm
+ i
p
, therefore
and since R
7
= R
2
:
Choose R
1
in the 1
range, the value of R
2
= R
7
follows. Remember that i is one-quarter of driver
peak-peak differential signal! Also check that the voltages on the driver outputs remain inside
allowed range.
G
Example: for i
cm
= 0.4mA, i = 0.2mA (corresponding to 0.8mA of peak-peak differential
current), I
p
= 1A
Choose R
1
= 0.75
, it follows R
2
= R
7
= 1.875k
.
4.3.3
Ripple Rejection
Make sure to connect R
7
directly to the ground side of R
1
.
4.3.4
Secondary Breakdown Diagrams
The diagram has been arbitrarily limited to max VS (35 V) and max I0 (2 A).
Figure 8: Output Transistor Safe Operating Area (SOA) for Secondary Breakdown
icm
R7
icmR2 therefore R7
R2
=
=
icm
i
–
(
)
R7
Ip
R1
icm
i
+
(
)
R2
+
=
Ip
i--
2R7
R1
----------
–
=
100
μ
s
10ms
100ms
0.01
0.1
1
10
10
60
100
Volts
I
@ Tcase=25°C
35
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