ZHCSJQ1D November 2010 – April 2019 UCD90160
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 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 Voltage 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 System Reset Signal
- 7.4.16 Watch Dog Timer
- 7.4.17 Run Time Clock
- 7.4.18 Data and Error Logging to Flash Memory
- 7.4.19 Brownout Function
- 7.4.20 PMBus Address Selection
- 7.5 Programming
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文档支持
- 12机械、封装和可订购信息
7.4.1.2 Turn-off Sequencing
The following sequence-off options are supported for each rail:
- Monitor only – do not sequence-off
- Fixed delay time (TOFF_DELAY) after an OPERATION command to turn off
- Fixed delay time after deassertion of the PMBUS_CNTRL pin
- Fixed time after one or a group of parent rails drop below regulation (POWER_GOOD_OFF)
- Fixed delay time in response to an undervoltage, overvoltage, or max turn-on fault on the rail
- Fixed delay time in response to a fault on a different rail when set as a fault shutdown slave to the faulted rail
- Fixed delay time in response to a GPI reaching a user-specified state
- Any combination of the previous options
The maximum TOFF_DELAY time is 3276 ms.
Figure 11. Sequence-on and Sequence-off Timing