Low Power / UPF · All levels
PD & Power Grid Integration
Domain-aware grid planning, IR stability across mode transitions, signoff dashboards, and PD/UPF handoff governance.
Section goal
Domain-aware grid planning, IR stability across mode transitions, signoff dashboards, and PD/UPF handoff governance.
How to study this section
Start with each topic hub and sketch the domain/state model.
Use mechanism and reports pages to connect policy intent to evidence.
Practice debug and worked-example pages for review readiness.
Close with checklist and silicon impact before signoff discussions.
Topics
domain-grid-partitioning/ — Domain Grid Partitioning
mode-transition-ir/ — Mode Transition IR
upf-signoff-dashboard/ — UPF Signoff Dashboard
power-pd-handoff/ — Power / PD Handoff
Related topics
Low-power deep dive
Mode transition IR and ownership clarity determine tapeout confidence.
Concept diagram
GRID + TRANSITIONS
domain partition -> staged wake -> transient IR -> signoff gateMetric graph
TRANSIENT DROOP TREND
baseline ███████
after staging ████
after tuning ██Reports and artifacts
domain grid report
dynamic IR analysis
LP signoff dashboard
handoff owner matrix
Mini case study
Dynamic IR during wake-up, not static IR, was the true blocker for release.
Debug branches
Inspect transition waveforms
Check PMU schedule alignment
Escalate aged waivers
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/pd-power-integration: 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
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
Evidence capsule
LP EVIDENCE CAPSULE 1
PATH: low-power/pd-power-integration
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/pd-power-integration: 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
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
Evidence capsule
LP EVIDENCE CAPSULE 2
PATH: low-power/pd-power-integration
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/pd-power-integration: 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
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
Evidence capsule
LP EVIDENCE CAPSULE 3
PATH: low-power/pd-power-integration
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/pd-power-integration: 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
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
Evidence capsule
LP EVIDENCE CAPSULE 4
PATH: low-power/pd-power-integration
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/pd-power-integration: 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
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
Evidence capsule
LP EVIDENCE CAPSULE 5
PATH: low-power/pd-power-integration
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>