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MAX20751 Datasheet(PDF) 21 Page - Maxim Integrated Products

Part # MAX20751
Description  Multiphase Master with PMBus Interface and Internal Buck Converter
PDF  33 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX20751 Datasheet(HTML) 21 Page - Maxim Integrated Products

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versus cost should all be considered, with the number of
phases and smart-slave devices determined. Efficiency
curves and ratings shown on the respective smart-slave
data sheets can be used for this purpose. If any phases
aren’t used, their corresponding PWMx pins should be
connected to GND with 0Ω resistors, as discussed in the
Phase Population Order section.
Selecting RDES
With the number of phases and part numbers
known, RDES should be selected to give the correct
overcurrent-protection (OCP) value. The OCP value is
set by RDES, in that the master IC uses a fixed value
of 150mV per phase. Since RDES is also used by
Table 6. Using R_SEL3 to Set the VOUT Slew Rate and Switching Frequency
MAX20751
Multiphase Master with PMBus Interface
and Internal Buck Converter
www.maximintegrated.com
Maxim Integrated │ 21
VOUT SLEW RATE (V/ms)
fSW (kHz)
R_SEL3 (Ω)
1.25
300
0
350
17.8
400
33.2
450
48.7
500
64.9
600
80.6
700
95.3
800
115
2.5
300
133
350
154
400
178
450
200
500
226
600
249
700
274
800
301
5
300
332
350
365
400
402
450
432
500
464
600
499
700
536
800
576
0.5
300
619
350
665
400
715
450
768
500
825
600
887
700
953
800
1020



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