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L6730D Datenblatt(PDF) 33 Page - STMicroelectronics

Teilenummer L6730D
Bauteilbeschribung  Adjustable step-down controller with synchronous rectification
PDF  50 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6730D Datenblatt(HTML) 33 Page - STMicroelectronics

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L6730C - L6730D
Application details
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●
Compensation network design:
–
Put the gain R5/R3 in order to obtain the desired converter bandwidth
–
Place
ωZ1 before the output filter resonance ωLC;
–
Place
ωZ2 at the output filter resonance ωLC;
–
Place
ωP1 at the output capacitor ESR zero ωESR;
–
Place
ωP2 at one half of the switching frequency;
–
Check the loop gain considering the error amplifier open loop gain.
Figure 27. Asymptotic bode plot of converter's open loop gain
LC
C
Vosc
Vin
R
R
ϖ
ϖ
⋅
∆
⋅
=
3
5
(18)



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