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Course contents

  • How to Use This Course
  • Low-Power Metrics Reference
  • Low-Power Glossary
  • Reading Path
  • Power Intent Fundamentals61
    • Supply Sets & Power States
    • Power Domain Basics
    • UPF Object Model
    • CPF vs UPF
    • Power Intent Fundamentals: Tricky Q&A
  • Isolation & Retention61
  • Level Shifters & Power Switches61
  • UPF Implementation Flow61
  • Low Power Verification61
  • PD & Power Grid Integration61
  • Low Power Interview Prep4
  • Low Power / UPF Cheatsheet
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‹Low-Power Design
  1. Topics
  2. Low-Power Design
  3. Power Intent Fundamentals

Low Power / UPF · All levels

Power Intent Fundamentals

Voltage domains, supply sets, power states, and the UPF object model that captures architectural power intent.

  • 5topics
  • 61lessons

Topics in this section

  1. 1Supply Sets & Power States15 lessons
    • Supply Sets & Power States: Mechanism
    • Supply Sets & Power States: Inputs & Outputs
    • Supply Sets & Power States: Reports & Metrics
    • Supply Sets & Power States: Debug Playbook
    • Supply Sets & Power States: Worked Example
    • Supply Sets & Power States: Pitfalls & Red Flags
    • Supply Sets & Power States: Interview Drills
    • Supply Sets & Power States: Review Checklist
    • Supply Sets & Power States: Theory Deep Dive
    • Supply Sets & Power States: Design Space
    • Supply Sets & Power States: Expanded Case Study
    • Supply Sets & Power States: Step-by-Step Walkthrough
    • Supply Sets & Power States: Comparison Matrix
    • Supply Sets & Power States: Software / Programmer View
    • Supply Sets & Power States: Silicon PPA Impact
  2. 2Power Domain Basics15 lessons
    • Power Domain Basics: Mechanism
    • Power Domain Basics: Inputs & Outputs
    • Power Domain Basics: Reports & Metrics
    • Power Domain Basics: Debug Playbook
    • Power Domain Basics: Worked Example
    • Power Domain Basics: Pitfalls & Red Flags
    • Power Domain Basics: Interview Drills
    • Power Domain Basics: Review Checklist
    • Power Domain Basics: Theory Deep Dive
    • Power Domain Basics: Design Space
    • Power Domain Basics: Expanded Case Study
    • Power Domain Basics: Step-by-Step Walkthrough
    • Power Domain Basics: Comparison Matrix
    • Power Domain Basics: Software / Programmer View
    • Power Domain Basics: Silicon PPA Impact
  3. 3UPF Object Model15 lessons
    • UPF Object Model: Mechanism
    • UPF Object Model: Inputs & Outputs
    • UPF Object Model: Reports & Metrics
    • UPF Object Model: Debug Playbook
    • UPF Object Model: Worked Example
    • UPF Object Model: Pitfalls & Red Flags
    • UPF Object Model: Interview Drills
    • UPF Object Model: Review Checklist
    • UPF Object Model: Theory Deep Dive
    • UPF Object Model: Design Space
    • UPF Object Model: Expanded Case Study
    • UPF Object Model: Step-by-Step Walkthrough
    • UPF Object Model: Comparison Matrix
    • UPF Object Model: Software / Programmer View
    • UPF Object Model: Silicon PPA Impact
  4. 4CPF vs UPF15 lessons
    • CPF vs UPF: Mechanism
    • CPF vs UPF: Inputs & Outputs
    • CPF vs UPF: Reports & Metrics
    • CPF vs UPF: Debug Playbook
    • CPF vs UPF: Worked Example
    • CPF vs UPF: Pitfalls & Red Flags
    • CPF vs UPF: Interview Drills
    • CPF vs UPF: Review Checklist
    • CPF vs UPF: Theory Deep Dive
    • CPF vs UPF: Design Space
    • CPF vs UPF: Expanded Case Study
    • CPF vs UPF: Step-by-Step Walkthrough
    • CPF vs UPF: Comparison Matrix
    • CPF vs UPF: Software / Programmer View
    • CPF vs UPF: Silicon PPA Impact
  5. 5Power Intent Fundamentals: Tricky Q&A1 lesson
On this page

    Section goal

    Voltage domains, supply sets, power states, and the UPF object model that captures architectural power intent.

    How to study this section

    1. Start with each topic hub and sketch the domain/state model.

    2. Use mechanism and reports pages to connect policy intent to evidence.

    3. Practice debug and worked-example pages for review readiness.

    4. Close with checklist and silicon impact before signoff discussions.

    Topics

    1. supply-sets-and-states/ — Supply Sets & Power States

    2. power-domain-basics/ — Power Domain Basics

    3. upf-object-model/ — UPF Object Model

    4. cpf-vs-upf/ — CPF vs UPF

    Related topics

    • Low Power / UPF course hub

    Low-power deep dive

    Power intent must be explicit, reviewable, and tool-consistent from day one.

    Concept diagram

    Diagram
    POWER INTENT FLOW
    
    architecture -> UPF objects -> tool binding -> verification evidence

    Metric graph

    Diagram
    INTENT QUALITY
    
    bound policies      ████████████ high
    stale references    ███          medium risk
    missing states      ██           high risk

    Reports and artifacts

    • PST report

    • domain map

    • UPF lint

    • policy binding summary

    Mini case study

    One missing PST entry blocked legal retention mode and caused false debug loops.

    Debug branches

    • Check legal state table first

    • Audit policy binding IDs

    • Freeze UPF revision tags

    Senior review question

    Ask: what transition evidence proves this topic is closed, and which owner signs it?

    Execution drill pack 1

    Use this pack to rehearse low-power closure on low-power/power-intent-fundamentals: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 1
    
    PATH: low-power/power-intent-fundamentals
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>

    Execution drill pack 2

    Use this pack to rehearse low-power closure on low-power/power-intent-fundamentals: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 2
    
    PATH: low-power/power-intent-fundamentals
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>

    Execution drill pack 3

    Use this pack to rehearse low-power closure on low-power/power-intent-fundamentals: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 3
    
    PATH: low-power/power-intent-fundamentals
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>

    Execution drill pack 4

    Use this pack to rehearse low-power closure on low-power/power-intent-fundamentals: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 4
    
    PATH: low-power/power-intent-fundamentals
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>

    Execution drill pack 5

    Use this pack to rehearse low-power closure on low-power/power-intent-fundamentals: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 5
    
    PATH: low-power/power-intent-fundamentals
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>
    PreviousNext: Supply Sets & Power States

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    Up nextSupply Sets & Power States

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    See also

    • How to Use This Course
    • Low-Power Metrics Reference
    • Low-Power Glossary