L5983 查看數據表（PDF） - STMicroelectronics

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L5983

2A step-down switching regulator

STMicroelectronics 

Application informations

5.4.2

Type II compensation network

In Figure 13 the type II network is shown.

Figure 13. Type II compensation network

L5983

The singularities of the network are:

fZ1 = 2----π-----⋅---R--1---4----⋅---C----4-,

fP0 = 0,

fP1 = 2----π-----⋅---R-----4----⋅1----C-C-------4--4------+--⋅------C--C--------5--5--

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

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