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AN2787 Fiches technique(PDF) 22 Page - STMicroelectronics

No de pièce AN2787
Description  Monolithic VR demonstration board for chipset
PDF  37 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2787 Fiches technique(HTML) 22 Page - STMicroelectronics

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STEVAL-ISA050V1 evaluation tests
AN2787
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Figure 18.
VDDQ, VTT and VTTREF turn-on
10.2
SW regulator - working mode
Each switching regulator changes working mode with the appropriate load. When the load is
heavy, the SW enters PWM mode, but when the load is light, pulse skip mode is entered.
Each SW regulator is also able to sink current from the output (forced PWM mode when a
soft overvoltage occurs).



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