參數(shù)資料
型號: L6599D
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?。?/td> 591K
代理商: L6599D
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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