AN 896: Multi-Rail Power Sequencer and Monitor Reference Design

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ID 683778
Date 3/15/2024
Public
Document Table of Contents
Document Table of Contents x
1. Overview of the Multi-Rail Power Sequencer and Monitor Reference Design 2. Architecture and Operation of the Multi-Rail Power Sequencer and Monitor Reference Design 3. Implementation and Simulation of the Multi-Rail Power Sequencer and Monitor Reference Design 4. Functionality Level and Resource Utilization Estimates 5. PCB Implementation for the Multi-Rail Power Sequencer and Monitor Reference Design 6. Document Revision History for the AN 896: Multi-Rail Power Sequencer and Monitor Reference Design
1. Overview of the Multi-Rail Power Sequencer and Monitor Reference Design x
1.1. Features of the Reference Design 1.2. Structure of the Reference Design Archive
2. Architecture and Operation of the Multi-Rail Power Sequencer and Monitor Reference Design x
2.1. Reference Design Architecture 2.2. Reference Design Component Blocks 2.3. Design Components and Parameter Options 2.4. Output Voltage Data Formats and Related Parameters
2.3. Design Components and Parameter Options x
2.3.1. Reset Sequencer (Reset_Sequencer) 2.3.2. Modular ADC Core Intel® FPGA IP (ADC_Core) 2.3.3. Sequencer ADC Decoder (ADC_Decoder) 2.3.4. Sequencer Voltage Monitor (Sequencer_VMonitor) 2.3.5. PMBus* Slave to Avalon®-MM Master Bridge (PMBus_Slave) 2.3.6. Power Sequencer (Sequencer_Core) 2.3.7. Other Design Components
2.3.3. Sequencer ADC Decoder (ADC_Decoder) x
2.3.3.1. Sequencer ADC Decoder Parameter Settings
2.3.4. Sequencer Voltage Monitor (Sequencer_VMonitor) x
2.3.4.1. Sequencer Voltage Monitor Parameter Settings
2.3.6. Power Sequencer (Sequencer_Core) x
2.3.6.1. Power Sequencer Parameter Settings
2.3.7. Other Design Components x
2.3.7.1. POR Pulse (POR_Pulse) 2.3.7.2. Reset to Conduit Adapter (Reset2Conduit) 2.3.7.3. pll_lock_splitter (PLL_LockSplit) 2.3.7.4. Avalon®-MM Sequencer (AVMM_Initializer)
3. Implementation and Simulation of the Multi-Rail Power Sequencer and Monitor Reference Design x
3.1. Customizing and Generating the Design Example 3.2. Updating the Schematic After Customizing the Design 3.3. Assigning Pins and Compiling the Design Example 3.4. Testbench Simulation to Understand Design Behavior
3.3. Assigning Pins and Compiling the Design Example x
3.3.1. Pin Description
3.4. Testbench Simulation to Understand Design Behavior x
3.4.1. Generating the Testbench Simulation 3.4.2. Running the Testbench Simulation
4. Functionality Level and Resource Utilization Estimates x
4.1. PMBus* Commands Implementation 4.2. Resource Utilization of the Multi-Rail Power Sequencer and Monitor Reference Design
1. Overview of the Multi-Rail Power Sequencer and Monitor Reference Design
2. Architecture and Operation of the Multi-Rail Power Sequencer and Monitor Reference Design
3. Implementation and Simulation of the Multi-Rail Power Sequencer and Monitor Reference Design
4. Functionality Level and Resource Utilization Estimates
5. PCB Implementation for the Multi-Rail Power Sequencer and Monitor Reference Design
6. Document Revision History for the AN 896: Multi-Rail Power Sequencer and Monitor Reference Design

2.1. Reference Design Architecture

Figure 2.  Multi-Rail Power Sequencer and Monitor Top Level Block Diagram


The reference design passes the remapped and decoded inputs to the Sequencer Voltage Monitor component. The Sequencer Voltage Monitor component checks and reports the statuses, among others, for the power good signal, undervoltage, overvoltage, alarms, and present voltage levels.

The reference design provides information about the state of the various rails to the PMBus* slave interface, a protocol that operates on the I2C physical interface. The design is compliant to the PMBus* 1.3.1 specification and can operate in 100 KHz and 400 KHz modes.

The Power Sequencer component implements a sequential approach when powering up the rails and powers them down in the reverse order. The Power Sequencer component uses the output of the Sequencer Voltage Monitor component to enable and disable the various power rails.

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Level Two Title