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參數資料
| 型號： | PIP8000FHN/N1 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC28 |
| 封裝： | 6 X 6 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT788-1, HVQFN-28 |
| 文件頁數： | 5/26頁 |
| 文件大?。?/td> | 126K |
| 代理商： | PIP8000FHN/N1 |
PIP8000FHN_2
NXP B.V. 2009. All rights reserved.
Preliminary data sheet
Rev. 02 — 6 July 2009
13 of 26
NXP Semiconductors
PIP8000FHN
Digital power supervisor
10. PMBus
10.1 Introduction
The PIP8000FHN supports the PMBus Power System Management Protocol
Specications, revision 1.1. In Table 11 below all supported commands are marked grey.
Table 11 shows all supported commands including PIP8000FHN manufacturer specic
commands.
The fan monitor counts the LOW to HIGH transitions from the fan tachometer. There are
two fan inputs. The fan tachometer must produce a voltage swing with a LOW below
0.75 V and a HIGH above 2.5 V. The peak transition should be limited to 3.3 V to protect
the PIP8000FHN measurement inputs.
10.2 Non-volatile memory
The PIP8000FHN has on board non-volatile memory to store:
Congurable settings like VO(max), and VO.
Warning and fault thresholds for overvoltage, overcurrent, and overtemperature.
Calibration information like coefcients.
During start-up the RESTORE_USER_ALL command is called to store all USER
parameters into the running conguration. When settings are changed
STORE_USER_ALL can be used to store the changed settings into the USER NVRAM
storage area. RESTORE_DEFAULT_ALL and STORE_DEFAULT_ALL can be used to
change parameters in the DEFAULT storage area. The running conguration needs to be
used to swap between USER and DEFAULT storage area.
10.3 PMBus commands
Table 11 contains a list of the PMBus commands.
Hex = PMBus command hex value, Command Name = PMBus command name,
# = Number of Data Bytes. R/W/C = Read / Write / Command. Some commands are R/W
where they are only dened as Read in the PMBus. The Write is supported to enable
factory programming.
Table 11.
PMBus commands
Hex Command name
#
SMBus
transaction
type
Default
value
Supported
range
Comments
ON, OFF, and margin testing
00
PAGE
1
R/W
01
OPERATION[1]
1
R/W
0x80
02
ON_OFF CONFIG[1]
1
R/W
0x18
03
CLEAR_FAULTS[1]
0C
04
PHASE
05
Reserved
06
Reserved
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