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R6986 Datasheet(PDF) 40 Page - STMicroelectronics

Part # R6986
Description  38 V, 2 A synchronous step-down switching regulator
PDF  62 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

R6986 Datasheet(HTML) 40 Page - STMicroelectronics

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R6986
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DocID026996 Rev 2
Equation 32
Figure 28. Phase plot
The blue solid trace represents the transfer function including the sampling effect term (see
Equation 22 on page 36), the dotted blue trace neglects the contribution.
6.5
Compensation network design
The maximum bandwidth of the system can be designed up to fSW/6 to guarantee a valid
small signal model.
Equation 33
Equation 34
BW
67kHz
=
phase margin
53
0
=
BW
fSW
6
---------
=
RC
2
 BW C
OUT VOUT

0.85V gCS gm TYP

----------------------------------------------------------------
=



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