Stratix® 10 Power Management User Guide

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ID 683418
Date 10/29/2024
Public
Document Table of Contents
Document Table of Contents x
1. Stratix® 10 Power Management Overview 2. Stratix® 10 Power Management Architecture and Features 3. Stratix® 10 Power Management and VID Interface Implementation Guide 4. Stratix® 10 Power Management User Guide Archives 5. Document Revision History for the Stratix® 10 Power Management User Guide
2. Stratix® 10 Power Management Architecture and Features x
2.1. Power Consumption 2.2. Power Reduction Techniques and Features 2.3. Power-On Reset Circuitry 2.4. Power Sequencing Considerations for Stratix® 10 Devices 2.5. Power Supply Design
2.1. Power Consumption x
2.1.1. Dynamic Power Equation
2.2. Power Reduction Techniques and Features x
2.2.1. SmartVID Standard Power Devices 2.2.2. Power-Screened Devices 2.2.3. Temperature Compensation 2.2.4. DSP and M20K Power Gating 2.2.5. Clock Gating 2.2.6. Power Sense Line
2.2.1. SmartVID Standard Power Devices x
2.2.1.1. SmartVID Feature Implementation in Stratix® 10 Devices 2.2.1.2. SDM Power Manager
2.2.1.2. SDM Power Manager x
2.2.1.2.1. PMBus Master Mode 2.2.1.2.2. PMBus Slave Mode
2.3. Power-On Reset Circuitry x
2.3.1. Power Supplies Monitored and Not Monitored by the POR Circuitry
2.4. Power Sequencing Considerations for Stratix® 10 Devices x
2.4.1. Power-Up Sequence Requirements for Stratix® 10 Devices 2.4.2. Power-Down Sequence Recommendations and Requirements for Stratix® 10 Devices
3. Stratix® 10 Power Management and VID Interface Implementation Guide x
3.1. Stratix® 10 Power Management and VID Interface Getting Started
3.1. Stratix® 10 Power Management and VID Interface Getting Started x
3.1.1. Specifying Parameters and Options
3.1.1. Specifying Parameters and Options x
3.1.1.1. Configuration Pin Parameters 3.1.1.2. Power Management and VID Parameters 3.1.1.3. Stratix® 10 Power Management and VID Interface QSF Constraint Guide
1. Stratix® 10 Power Management Overview
2. Stratix® 10 Power Management Architecture and Features
3. Stratix® 10 Power Management and VID Interface Implementation Guide
4. Stratix® 10 Power Management User Guide Archives
5. Document Revision History for the Stratix® 10 Power Management User Guide

2.2.3. Temperature Compensation

Stratix® 10 devices are able to compensate for performance degradation at colder temperatures by raising the voltage. While raising the voltage does increase the dynamic power consumption, this is countered by lower leakage at cold temperatures, thus enabling total power consumption at cold temperatures to still be lower than at hot temperatures.

The SmartVID feature supports this dynamic voltage adjustment. The SDM Power Manager checks for temperature changes and updates the new VID value if the temperature crosses the threshold point.

Figure 8. Temperature Compensation for SmartVID for Stratix® 10 Devices—PreliminaryThe SDM monitors the temperature, normally at every 100 ms, and adjusts the voltage by communicating with an external power management system. Adjustment is made by the SDM after the sensor detects the temperature setting is below 10 °C or above 20 °C.

The following shows the process when there is a change in the VID value:

  • If the Stratix® 10 device operates as the PMBus master, the SDM sends the relevant commands to adjust the voltage of the external voltage regulator using the new VID value.
  • If the Stratix® 10 device operates as the PMBus slave, the external power management controller gets the new VID value with the VOUT_COMMAND which is issued every 200 ms or less, and set the voltage regulator with the new VID value.
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