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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： | 22/26頁 |
| 文件大小： | 126K |
| 代理商： | PIP8000FHN/N1 |
PIP8000FHN_2
NXP B.V. 2009. All rights reserved.
Preliminary data sheet
Rev. 02 — 6 July 2009
5 of 26
NXP Semiconductors
PIP8000FHN
Digital power supervisor
7.
Functional description
7.1 System interfaces
There are several interfaces:
PMBus - Two lines consisting of a serial clock and serial data, conforming to
SMBus V. 2.0, including digital lines called control and one SMAlert.
Seven channels of 10-bit resolution A/D for measurement of temperatures and I/O
volts and current with one channel user denable.
Two channels of low frequency 16-bit counters for fan speed measurement.
Pulse Width Modulation (PWM) output with 10 bits of duty cycle resolution for setting
a DC level to adjust analog PWM controllers and hence the power supply output
voltage.
7.2 Operations
PMBus denes that a compliant device must start and operate stably without PMBus
communications. When a module implementing the PIP8000FHN is powered up, the
PIP8000FHN goes through several levels of conguration, nishing by loading the end
user operating parameters from NVRAM, measuring input voltage, checking the power
train for proper operating environment and, when congured, enables the output voltage.
It may operate without any host interaction. If commanded, it can deliver status
information. This will allow the host controller to collect data at the system designer's
initiative, including long term data for system reliability purposes. Finally, it will issue
warnings if operating margins are exceeded or perform selected actions if actual
operating Fault limits are exceeded.
7.3 Product functions
PMBus compliant, support commands are listed in Table 10
Congurable overvoltage/undervoltage, overcurrent, and temperature protection
Congurable response to fault events and warnings
Congurable sequencing
Wide range output voltage
Congurable output voltage ramping
Non-volatile memory for storing conguration values, device specications, etc.
7.4 Host interface
The PIP8000FHN can run stand-alone or a host controller can be connected using the
I2C interface. With a host controller the PIP8000FHN can be controlled and monitored
using the PMBus commands as listed in Section 10.
7.4.1 I2C slave address
Any device that exists on the System Management Bus (SMB) as a slave has a unique
address called the slave address. For reference, the following addresses are reserved and
must not be used by or assigned to any SMBus slave device.
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