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L5987 데이터시트(PDF) 28 Page - STMicroelectronics

부품명 L5987
상세설명  3 A step-down switching regulator
PDF  42 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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L5987 데이터시트(HTML) 28 Page - STMicroelectronics

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L5987 - L5987A
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Equation 29
For example with VOUT = 3.3 V, VIN = 12 V, IO = 3 A, L = 10 μH, COUT = 330 μF,
ESR = 35 m
Ω, the type II compensation network is:
In Figure 15 is shown the module and phase of the open loop gain. The bandwidth is about
32 kHz and the phase margin is 45°.
C
5
C
4
2
π R
4
C
4
4BW
⋅
1
–
⋅⋅⋅
--------------------------------------------------------------
=
R
1
1.5k
Ω
=
R
2
330
Ω
=
R
4
10k
Ω
=
C
4
47nF
=
C
5
82pF
=
,,
,
,



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