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LTC3458 Datasheet, PDF (13/16 Pages) Linear Technology – 1.4A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect | |||
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APPLICATIO S I FOR ATIO
rolled off before the RHP zero frequency.
The typical error amp compensation is shown in Figure 2.
The equations for the loop dynamics are as follows:
fPOLE1
â
2Ï
1
⢠10e 6
which
⢠CC1
is
close
to
DC
fZERO1
=
2Ï
1
⢠RZ
⢠CC1
fPOLE2
â
2Ï
1
â¢RZ ⢠CC2
LTC3458
ERROR
AMP
1.25V
VOUT
FB
7
COMP
8
CC1
RZ
Figure 2
R1
R2
CC2
3458 F01
3458f
13
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