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L6982 Datasheet(PDF) 28 Page - STMicroelectronics

No. de pieza L6982
Descripción Electrónicos  38 V, 2 A synchronous step-down converter with low quiescent current
PDF  48 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6982 Datasheet(HTML) 28 Page - STMicroelectronics

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As the compensation network is internal, the output capacitor should be selected in order to have a proper phase
margin and then a stable control loop. A good rule to obtain a proper dimensioning for the minimum amount of the
output capacitor is to set the target system bandwidth equal to FSW/10. The following equation takes into account
the precedent consideration:
COUT,BW,min= 8.04
FSW8∙VOUT
(41)
The maximum amount of the output capacitor is given by:
COUT,BW,min=0.96∙10−3
VOUT
(42)
L6982
Design of the power components
DS13683 - Rev 1
page 28/48



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