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ST1S41 Datasheet(PDF) 12 Page - STMicroelectronics

Part # ST1S41
Description  850 kHz switching frequency
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST1S41 Datasheet(HTML) 12 Page - STMicroelectronics

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Functional description
ST1S41
12/27
DocID023654 Rev 2
So closing the loop, the loop gain GLOOP(s) is:
Equation 14
Example:
VIN=12 V, VOUT=1.2 V, Iomax=4 A, L=1.5 uH, Cout=47 uF (MLCC), R1=10 k
Ω, R2=20
k
Ω (see Section 6.2 and Section 6.3 for inductor and output capacitor selection
guidelines).
The module and phase bode plot are reported in Figure 6.
The bandwidth is 100 kHz and the phase margin is 45 degrees.
G
LOOP s
()
G
CO s
() G
DIV s
() G
EA s
()
⋅⋅
=



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