BQ25185 Charger Topology
Thought
La auditoría confirma que U1 tiene el mismo pinout y paquete DQA-10 que el nuevo objetivo, pero es un dispositivo ESD diferente y no puede calificarse como sustituto funcional. Crearé ahora la matriz completa, manteniendo criterios conservadores para todos los pasivos genéricos.
Worked
Created a project doc
Component and Footprint Qualification Matrix
Mandatory status: BENCH_ONLY / NOT FOR FABRICATION / NOT FOR ENERGIZATION Scope: Read-only audit of the current 69-designator project. No sc...
La matriz completa quedó creada con los 69 designadores y criterios conservadores de fabricación; cierro la auditoría sin cambios de diseño.
Thought
Auditoría completada para los 69 designadores, sin modificar esquema, PCB, nets, BOM, librerías, placement ni routing.
La matriz destaca como bloqueos principales: J1, cambio requerido de U1 a TPD4E05U06DQAR, U10, K1–K3, L1 y todos los pasivos genéricos sin MPN exacto. El proyecto permanece BENCH_ONLY.
Fix blockers and recheck
Create exact parts
Plan replacement phase
Export documentation package
Audit passive MPNs
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Regulatory and Safety Notes — Brand NewDay Shadow PCB
Status
Draft / BENCH_ONLY.
Why This Exists
The design includes a wireless controller/RF interface, battery charging, high-voltage protected input, relays, and unspecified machine/load contacts. This requires explicit safety and compliance tracking before any real-world use.
Preliminary Compliance Categories
- RF regulatory review required once antenna, RF band, matching network, and module/certification strategy are defined.
- Safety review required for high-voltage input, hot-swap/eFuse path, relay contacts, battery charging, thermal behavior, creepage/clearance, and enclosure.
- DFM/manufacturer review required before any fabrication.
Preliminary FMEA Seeds
Table
| Subsystem | Failure mode | Effect | Mitigation / Open action |
|---|---|---|---|
| BQ25185 charger | Incorrect CE/SYS wiring | Charge disabled or unsafe behavior | CE separated from SYS and tied to GND in this shadow build; verify pin-by-pin. |
| Battery path | Unknown cell chemistry/capacity/current | Unsafe charge current or voltage | Battery specs are open blockers. |
| HV input | Unknown VIN/load/current | Thermal or overvoltage risk | Do not certify; require input/load spec and creepage/clearance. |
| Relay contacts | Contacts wired to unknown machine/load | Unsafe machine actuation | Leave contacts unresolved; do not invent load nets. |
| RF path | Antenna geometry invented | Failed RF/compliance/performance | Reserve RF interface/keepout only; require chosen antenna/reference layout. |
| Layout | Stack-up/impedance invented | Invalid USB/RF impedance claims | Use 4-layer proposal only; no controlled-impedance claim. |
Open Compliance Items
- RF band, antenna, matching, keepout, certification target.
- Final stack-up, dielectric, copper, impedance, creepage/clearance.
- Environmental, enclosure, connector access, thermal limits.
- Machine/load safety requirements and relay contact usage.
- Battery safety data and charge limits.
Status
Why This Exists
Preliminary Compliance Categories
Preliminary FMEA Seeds
Open Compliance Items
