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參數(shù)資料
| 型號： | L6599N |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | High-voltage resonant controller |
| 中文描述： | 高壓諧振控制器 |
| 文件頁數(shù)： | 22/36頁 |
| 文件大小： | 591K |
| 代理商： | L6599N |
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Application information
L6599
22/36
Figure 28. Power vs frequency curve in an resonant half-bridge
As a result, the average input current will smoothly increase, without the peaking that occurs
with linear frequency sweep, and the output voltage will reach the regulated value with
almost no overshoot.
Typically, R
SS
and C
SS
will be selected based on the following relationships:
where f
start
is recommended to be at least 4 times f
min
. The proposed criterion for C
SS
is
quite empirical and is a compromise between an effective soft-start action and an effective
OCP (see next section). Please refer to the timing diagram of
Figure 31
to see some
significant signals during the soft-start phase.
RESONANCE
FREQUENCY
f
| Z ( f ) |
- 1
Initial
frequency
Steady-state
frequency
R
SS
RF
f
min
-----------
1
–
---------------------
=
C
ss
----------------------
3
–
R
SS
=
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