ZHCSFJ6B August 2016 – March 2022 UCD9090A
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3 Feature Description
- 7.4
Device Functional Modes
- 7.4.1 Power Supply Sequencing
- 7.4.2 Pin-Selected Rail States
- 7.4.3 Monitoring
- 7.4.4 Fault Responses and Alert Processing
- 7.4.5 Shut Down All Rails and Sequence On (Resequence)
- 7.4.6 GPIOs
- 7.4.7 GPO Control
- 7.4.8 GPO Dependencies
- 7.4.9 GPI Special Functions
- 7.4.10 Power Supply Enables
- 7.4.11 Cascading Multiple Devices
- 7.4.12 PWM Outputs
- 7.4.13 Programmable Multiphase PWMs
- 7.4.14 Margining
- 7.4.15 Run Time Clock
- 7.4.16 System Reset Signal
- 7.4.17 Watch Dog Timer
- 7.4.18 Data and Error Logging to Flash Memory
- 7.4.19 Brownout Function
- 7.4.20 PMBus Address Selection
- 7.4.21 Device Reset
- 7.4.22 JTAG Interface
- 7.4.23 Internal Fault Management and Memory Error Correction (ECC)
- 7.5 Programming
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項
請參考 PDF 數據表獲取器件具體的封裝圖。
機械數據 (封裝 | 引腳)
- RGZ|48
散熱焊盤機械數據 (封裝 | 引腳)
- RGZ|48
訂購信息
7.4.3.4 Temperature by Host Input
If the host system has the option of not using the temperature-sensing capability of the UCD9090A, it can still provide the desired temperature to the UCD9090A through PMBus. The host may have temperature measurements available through I2C or SPI interfaced temperature sensors. The UCD9090A would use the temperature given by the host in place of an external temperature measurement for a given rail. The temperature provided by the host would still be used for detecting overtemperature warnings or faults, logging peak temperatures, input to Boolean logic-builder functions, and feedback for the fan-control algorithms. To write a temperature associated with a rail, the PMBus command used is the READ_TEMPERATURE_2 command. If the host writes that command, the value written will be used as the temperature until another value is written. This is true whether a monitor pin was assigned to the temperature or not. When there is a monitor pin associated with the temperature, once READ_TEMPERATURE_2 is written, the monitor pin is not used again until the part is reset. When there is not a monitor pin associated with the temperature, the internal temperature sensor is used for the temperature until the READ_TEMPERATURE_2 command is written.
Figure 7-10 Temperature Provided by Host