Maxim-integrated MAX15301 PMBus Command Set Manuel d'utilisateur télécharger pdf (Page 17)

MAX15301 PMBus Command Set User’s Guide

Rev 1 Page 17 of 53

POWER_GOOD_OFF

Reference:

Standard Command

Lockable:

Yes

Command Code:

0x5F

Format:

Unsigned integer mantissa

Data Bytes:

Units:

Transfer:

Read/Write Word

Factory Value:

0x0F99 (see Description)

Description/Notes:

See Section 15.32.2 of the PMBus Specification Part II.

POWER_GOOD_OFF mantissa data sent to and from the MAX15301 must be divided by 4096 to

determine the actual voltage value, according to the fixed value of VOUT_MODE

In the MAX15301, there are seven possible output voltage ranges based on seven corresponding

internal feedback divider taps. The MAX15301 hardware has 8-bit resolution for the power-good

threshold within each of these seven ranges.

The desired value of POWER_GOOD_OFF is retained in memory, regardless of limitations imposed by

the feedback divider range and the 8-bit fault limit resolution, but the read-back value is based on

actual hardware register settings.

The factory value of 0x0F99 (0.980V) will be overridden during initialization to

VOUT_COMMAND x 0.93, unless a specific value has been written to the User Store.

TON_DELAY

Reference:

Standard Command

Lockable:

Yes

Command Code:

0x60

Format:

Linear

Data Bytes:

Units:

Transfer:

Read/Write Word

Factory Value:

0xCA80 (see Description)

Description/Notes:

See Section 16.1 of the PMBus Specification Part II.

The TON_DELAY command sets the delay time between a valid enable condition and the beginning of

the output ramp to regulation at VOUT_COMMAND

. The nominal factory value is 5ms.

An 8-bit timer with approximately 570μs resolution allows for delay times from ≈1ms to ≈145ms.

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Maxim-integrated MAX15301 PMBus Command Set Manuel d'utilisateur Page 17

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