Maxim-integrated MAX15301 PMBus Command Set Manual de usuario descargar pdf (Pagina 48)

MAX15301 PMBus Command Set User’s Guide

Rev 1 Page 48 of 53

Control Loop Commands

ADAPTIVE_MODE

Reference:

Maxim Specific

Lockable:

Yes

Command Code:

0xD0

Format:

Bit field

Data Bytes:

Units:

N/A

Transfer:

Read/Write Word

Factory Value:

0x024B

Description/Notes:

The ADAPTIVE_MODE command configures the automatic tuning features of the MAX15301. Each bit

in the two data bytes enables a particular function as follows:

Bit

Name

Effect When True

FIRST_ENABLE_ONLY

Perform parametric extraction on first enable only

9 ADAPT_POST_RAMP

Perform parametric extraction after the startup ramp (set by

default)

ADAPT_CONTINUOUS

Perform parametric extraction periodically while regulating

6 UPDATE_FLC

Update working memory LC double-pole frequency (F

) after

parametric extraction (set by default)

5 UPDATE_FZ

Update working memory output capacitor ESR zero frequency (F

)

after parametric extraction

4 UPDATE_ZLC

Update working memory LC damping factor (Z

) after parametric

extraction

3 RESET_GAINS

Reset gain registers based on USER store values when output is

disabled (set by default)

2 WRITEFLASH

Execute STORE_USER_ALL after adaptive measurement (note that

this bit is cleared from the working memory copy of

ADAPTIVE_MODE after execution)

1 GAIN_CALC

Calculate new NLSS “fast gain” register values based on

COMP_MODEL parameters (set by default)

0 FAST_GAINS

The control loop will switch to using the NLSS “fast gains”

registers after ramp-up is complete (set by default)

Wait at least 500μs for execution after sending the ADAPTIVE_MODE command before sending

additional PMBus commands.

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Maxim-integrated MAX15301 PMBus Command Set Manual de usuario Pagina 48

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