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L5980 数据表(PDF) 23 Page - STMicroelectronics

部件名 L5980
功能描述  0.7A step-down switching regulator
PDF  37 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L5980 数据表(HTML) 23 Page - STMicroelectronics

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Application informations
L5980
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5.4.2
Type II compensation network
In Figure 13 the type II network is shown.
Figure 13.
Type II compensation network
The singularities of the network are:
In Figure 14 the Bode diagram of the PWM and LC filter transfer function (GPW0 · GLC(f))
and the open loop gain (GLOOP(f)=GPW0 · GLC(f) · GTYPEII(f)) are drawn.
Figure 14.
Open loop gain: module bode diagram
f
Z1
1
2
π R
4
C
4
⋅⋅
------------------------------
=
f
P0
0
=
f
P1
1
2
π R
4
C
4
C
5
⋅
C
4
C
5
+
--------------------
⋅⋅
--------------------------------------------
=
,,



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