參數(shù)資料
型號: L6911ETR
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封裝: SO-20
文件頁數(shù): 16/34頁
文件大小: 558K
代理商: L6911ETR
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Product(s)
Obsolete
Product(s)
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Product(s)
L6911E
Device description
23/34
Note:
To understand the reason of the previous assumption, the scheme in Figure 11 on page 23
must be considered.
In this scheme, the inductor current has been substituted by the load current, because in the
frequencies range of interest for the Droop function these current are substantially the same
and it was supposed that the droop network don't represent a charge for the inductor.
Figure 11. Voltage regulation with droop function block scheme
It results:
Equation 23
Because in the interested range |Gloop|>>1.
To obtain a flat shape, the relationship considered will naturally follow.
Av(s)
R(s)
Vout
V com p
Iout
d
s
L
s
OUT
R
τ
+
+
1
Z
OUT
V
o
I
LOAD
---------------
R
d
1s
τ
L
+
1s
τ
d
+
------------------
G
LOOP
1G
LOOP
+
----------------------------
R
OUT
1s
τ
L
+
1s
τ
d
+
------------------
==
=
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