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R5972D Datasheet(PDF) 14 Page - STMicroelectronics

Part # R5972D
Description  Up to 1.5 A step-down switching regulator for aerospace applications
PDF  35 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

R5972D Datasheet(HTML) 14 Page - STMicroelectronics

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R5972D
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DocID026873 Rev 1
Figure 7. Error amplifier equivalent circuit and compensation network
The poles of this transfer function are (if Cc >> C0 + CP):
Equation 3
Equation 4
whereas the zero is defined as:
Equation 5
FP1 is the low frequency which sets the bandwidth, while the zero FZ1 is usually put near to
the frequency of the double pole of the L-C filter (see Section 7.2: LC filter). FP2 is usually at
a very high frequency.
FP1
1
2
R0
Cc
-------------------------------------
=
FP2
1
2
Rc
C0 Cp
+

--------------------------------------------------------
=
FZ1
1
2
Rc
Cc
-------------------------------------
=



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