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A6986F Datasheet(PDF) 42 Page - STMicroelectronics

Part # A6986F
Description  38 V 1.5 A synchronous step-down switching regulator
PDF  72 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A6986F Datasheet(HTML) 42 Page - STMicroelectronics

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Closing the loop
A6986F
42/72
DocID027739 Rev 1
Figure 32. Module plot
Equation 32
Figure 33. Phase plot
The blue solid trace represents the transfer function including the sampling effect term (see
Equation 22 on page 38), the dotted blue trace neglects the contribution.
BW
60kHz
=
phase margin
70
0
=
0.1
1
10
100
110
3
110
4
110
5
110
6
110
7
0
22.5
45
67.5
90
112.5
135
157.5
180
EXTERNAL LOOP GAIN PHASE
Frequency [Hz]



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