ADP1048ARQZ-R7 datasheet(26/84 Pages) AD

26 / 84 page

ADP1047/ADP1048

Data Sheet

Rev. 0 | Page 26 of 84

STANDARD PMBus FLAGS

When the corresponding bit of a standard PMBus flag is

set in the STATUS_WORD or STATUS_BYTE register,

the programmed action takes place as shown in Figure 25.

Figure 25 shows the bits in the six standard PMBus fault

response registers: Register 0x41, Register 0x45, Register 0x50,

fault response registers follow the same format. For more infor-

mation, see the PMBus Fault Flag Response section.

FAULT CLEARED

11 = DISABLE OUTPUT

FAULT

NOT

CLEARED

OUTPUT

DISABLED

RESPONSE (BITS[7:6])

RETRY SETTING (BITS[5:3])

DELAY TIME (BITS[2:0])

NORMAL

OPERATION

00 =

NOTHING

FLAGS ARE

IGNORED

IF BLANKED

SOFT

START

DELAY

TIME

(BITS[2:0])

SHUT

DOWN

RETRY SETTING (BITS[5:3])

000 = NO RETRIES (OFF)

001 TO 110 = TRY 1 TO 6 TIMES

111 = RETRY FOREVER

IF FLAG STILL ACTIVE

01 = SHUT DOWN (AFTER DEBOUNCE)

10 = IMMEDIATE SHUTDOWN

Figure 25. Standard PMBus Fault Response

Table 12. Summary of Standard PMBus Flags Implemented on the ADP1047/ADP1048

Name

Address

Description

Action

STATUS_BYTE (0x78)

PSON_OFF

0x78[6]

Power supply on signal: this flag indicates that the PSON signal (hardware

or software) is inactive.

VOUT_OV

0x78[5]

General output overvoltage fault. This flag is a combination (OR) of any output

overvoltage flag: Register 0x7A[7] and Register 0xFE80[4] (FAST_OVP).

Programmable

VIN_UV

0x78[3]

General input undervoltage fault (same data as in Register 0x7C[4]).

Programmable

TEMPERATURE

0x78[2]

Temperature fault or warning.

Programmable

CML

0x78[1]

Communications, memory, or logic fault.

NONE_OF_THE_ABOVE

0x78[0]

A fault or warning not listed in Register 0x78[7:1].

STATUS_WORD (0x79)

VOUT

0x79[15]

Any fault or warning on the output voltage (overvoltage, undervoltage, fast

OVP, or accurate OVP).

INPUT

0x79[13]

Input voltage, input current, or input power fault or warning (same data as

in Register 0x7C, Bits[7:0]).

MFR

0x79[12]

Manufacturer-specific fault or warning (same data as in Register 0xFE80,

POWER_GOOD#

0x79[11]

Power good. This flag is a programmable combination of other internal flags

and refers to the condition of the output voltage. This flag sets the PGOOD

pin. The POWER_GOOD# flag is an inverted version of the PGOOD pin.

PGOOD pin

UNKNOWN

0x79[8]

A fault or warning not listed in Bits[15:1].

ADP1048ARQZ-R7 数据表(PDF) 26 Page - Analog Devices

ADP1048ARQZ-R7 数据表(HTML) 26 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

数据表下载

链接网址

ADP1048ARQZ-R7 数据表(PDF) 26 Page - Analog Devices

ADP1048ARQZ-R7 数据表(HTML) 26 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

数据表 下载

链接网址

数据表下载