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E-004 — DEC-004 — Module slot power rails and current limit decision

Created by demo · 2026-06-08

History

Details

Decision

Each module slot shall be supplied with all of the following rails: 20V, 5V, 3V3, 2.5V, 1V8. Maximum current per slot per rail shall not exceed 1A.

Rationale

Stated by engineer based on module interface requirements.

Rejected alternatives

None discussed.

Follow-up

  • Update REQ-010: distribution covers all rails, not just 20V.
  • Update REQ-011: power switches rated ≥1A.
  • Update REQ-012: shunt current measurement range 0–1A per slot.
  • Verify 2.5V: confirm whether 2.5V VREF (REQ-001) serves as the module slot supply rail or if a separate 2.5V power rail is needed.

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