ADP1048 Analog Devices, ADP1048 Datasheet - Page 26

• Manufacturer Part Number: ADP1048
• Description: Digital Power Factor Correction Controller with accurate AC Power Metering
• Manufacturer: Analog Devices

ADP1047/ADP1048
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.
Table 12. Summary of Standard PMBus Flags Implemented on the
Name
STATUS_BYTE (0x78)
PSON_OFF
VOUT_OV
VIN_UV
TEMPERATURE
CML
NONE_OF_THE_ABOVE
STATUS_WORD (0x79)
VOUT
INPUT
MFR
POWER_GOOD#
UNKNOWN
Address
0x78[6]
0x78[5]
0x78[3]
0x78[2]
0x78[1]
0x78[0]
0x79[15]
0x79[13]
0x79[12]
0x79[11]
0x79[8]
DOWN
SHUT
Description
Power supply on signal: this flag indicates that the PSON signal (hardware
or software) is inactive.
General output overvoltage fault. This flag is a combination (OR) of any output
overvoltage flag: Register 0x7A[7] and Register 0xFE80[4] (FAST_OVP).
General input undervoltage fault (same data as in Register 0x7C[4]).
Temperature fault or warning.
Communications, memory, or logic fault.
A fault or warning not listed in Register 0x78[7:1].
Any fault or warning on the output voltage (overvoltage, undervoltage, fast
OVP, or accurate OVP).
Input voltage, input current, or input power fault or warning (same data as
in Register 0x7C, Bits[7:0]).
Manufacturer-specific fault or warning (same data as in Register 0xFE80,
Register 0xFE81, and Register 0xFE82).
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.
A fault or warning not listed in Bits[15:1].
01 = SHUT DOWN (AFTER DEBOUNCE)
Figure 25. Standard PMBus Fault Response
001 TO 110 = TRY 1 TO 6 TIMES
10 = IMMEDIATE SHUTDOWN
RETRY SETTING (BITS[5:3])
RETRY SETTING (BITS[5:3])
000 = NO RETRIES (OFF)
DELAY TIME (BITS[2:0])
111 = RETRY FOREVER
IF FLAG STILL ACTIVE
RESPONSE (BITS[7:6])
OPERATION
(BITS[2:0])
Rev. 0 | Page 26 of 84
NOTHING
NORMAL
DELAY
TIME
00 =
DO
ADP1047/ADP1048
11 = DISABLE OUTPUT
FAULT CLEARED
Figure 25 shows the bits in the six standard PMBus fault
response registers: Register 0x41, Register 0x45, Register 0x50,
Register 0x56, Register 0x5A, and Register 0x5C. All six PMBus
fault response registers follow the same format. For more infor-
mation, see the PMBus Fault Flag Response section.
IF BLANKED
FLAGS ARE
DISABLED
IGNORED
OUTPUT
START
SOFT
CLEARED
FAULT
NOT
Action
Programmable
Programmable
Programmable
PGOOD pin
Data Sheet