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L6751 Fiches technique(PDF) 40 Page - STMicroelectronics

No de pièce L6751
Description  Digitally controlled dual PWM for Intel VR12 and AMD SVI
PDF  59 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6751 Fiches technique(HTML) 40 Page - STMicroelectronics

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Output voltage monitoring and protection
L6751
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Doc ID 023992 Rev 1
Equation 16
where ISMAX is max. current requested by the processor (see Intel docs for
details).
–
Adjust the defined values according to application bench tests.
–CSIMON in parallel to RSIMON can be added with proper time constant to prevent
false OC tripping.
Note:
This is the typical design flow. Custom design and specifications may require different
settings and ratios between the per-phase OC threshold and the total current OC threshold.
Applications with big ripple across inductors may be required to set per-phase OC to values
different than 110%: design flow should be modified accordingly.
R
SIMON
1.24V
R
SG
⋅
I
SMAX
DCR
⋅
-------------------------------------
=
I
SIMON
DCR
R
SG
-------------
I
SOUT
⋅
=
⎝⎠
⎛⎞



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