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L7986 Datenblatt(PDF) 26 Page - STMicroelectronics

Teilenummer L7986
Bauteilbeschribung  3 A step-down switching regulator
PDF  43 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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L7986 Datenblatt(HTML) 26 Page - STMicroelectronics

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L7986
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DocID022450 Rev 6
For example with VOUT = 5 V, VIN = 24 V, IO = 3 A, L = 18 H, COUT = 330 F, ESR = 35 m
the type II compensation network is:
In Figure 15 the module and phase of the open-loop gain is shown. The bandwidth is about
21 kHz and the phase margin is 45°.
Figure 15. Open-loop gain Bode diagram with electrolytic/tantalum output capacitor
R1 1.1k
=
R2 150
=
R4 4.99k
=
C4 82nF
=
C5 68pF
=




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