Output voltage sequencing commands, Power_good_on, Power_good_off – Maxim Integrated MAX15303 PMBus Command Set User Manual
Page 16
MAX15303 PMBus Command Set User’s Guide
Page 16 of 52
Output Voltage Sequencing Commands
POWER_GOOD_ON
Reference:
Standard Command
Lockable:
Yes
Command Code:
0x5E
Format:
Unsigned integer mantissa
Data Bytes:
2
Units:
V
Transfer:
Read/Write Word
Factory Value:
0x1135 (1.080V)
Description/Notes: See Section 15.32.1 of the PMBus Specification Part II.
POWER_GOOD_ON mantissa data sent to and from the MAX15303 must be divided by 4096 to
determine the actual voltage value, according to the fixed value of
In the MAX15303, there are seven possible output voltage ranges based on seven corresponding
internal feedback divider taps. The MAX15303 hardware has 8-bit resolution for the power-good
threshold within each of these seven ranges.
The desired value of POWER_GOOD_ON 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 0x1135 (1.080V) will be overridden during initialization to
x 0.95, unless a specific value has been written to the User Store.
POWER_GOOD_OFF
Reference:
Standard Command
Lockable:
Yes
Command Code:
0x5F
Format:
Unsigned integer mantissa
Data Bytes:
2
Units:
V
Transfer:
Read/Write Word
Factory Value:
0x0F99 (0.980V)
Description/Notes: See Section 15.32.2 of the PMBus Specification Part II.
POWER_GOOD_OFF mantissa data sent to and from the MAX15303 must be divided by 4096 to
determine the actual voltage value, according to the fixed value of
In the MAX15303, there are seven possible output voltage ranges based on seven corresponding
internal feedback divider taps. The MAX15303 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
x 0.93, unless a specific value has been written to the User Store.