LTM4686BIVPBF datasheet(111/130 Pages) AD

111 / 130 page

LTM4686B

111

Rev. 0

For more information www.analog.com

APPENDIX C: PMBUS COMMAND DETAILS

SMBALERT_MASK Default Setting: (Refer Also to Summary of the Status Registers, Figure 60)

STATUS RESISTER

ALERT Mask Value MASKED BITS

STATUS_VOUTn

0x00

None

STATUS_IOUTn

0x00

None

STATUS_TEMPERATUREn

0x00

None

STATUS_CML

0x00

None

STATUS_INPUT

0x00

None

STATUS_MFR_SPECIFICn

0x11

Bit 4 (internal PLL unlocked), bit 0 (GPIOn pulled low by external device)

STATUS_BYTE

The STATUS_BYTE command returns a one-byte summary of the most critical faults.

STATUS_BYTE Message Contents:

BIT

STATUS BIT NAME

MEANING

BUSY

A fault was declared because the LTM4686B was unable to respond.

OFF

This bit is set if the channel is not providing power to its output, regardless of the reason, including simply not

being enabled.

VOUT_OV

An output overvoltage fault has occurred.

IOUT_OC

An output overcurrent fault has occurred.

VIN_UV

Not supported (LTM4686B returns 0).

TEMPERATURE

A temperature fault or warning has occurred.

CML

A communications, memory or logic fault has occurred.

NONE OF THE ABOVE A fault Not listed in bits[7:1] has occurred.

This command has one data byte

Any supported fault bit in this command will initiate an ALERT event.

STATUS_WORD

The STATUS_WORD command returns a two-byte summary of the channel’s fault condition. The low byte of the

STATUS_WORD is the same as the STATUS_BYTE command.

STATUS_WORD High Byte Message Contents:

BIT

STATUS BIT NAME

MEANING

VOUT

An output voltage fault or warning has occurred.

IOUT

An output current fault or warning has occurred.

INPUT

An SVIN input voltage fault or warning has occurred.

MFR_SPECIFIC

A fault or warning specific to the LTM4686B has occurred.

POWER_GOOD#

The POWER_GOOD state is false if this bit is set.

FANS

Not supported (LTM4686B returns 0).

OTHER

Not supported (LTM4686B returns 0).

UNKNOWN

Not supported (LTM4686B returns 0).

Any supported fault bit in this command will initiate an ALERT event.

This command has two data bytes.

LTM4686BIVPBF 데이터시트(PDF) 111 Page - Analog Devices

LTM4686BIVPBF 데이터시트(HTML) 111 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL