GND und Neutralleiter Erklärung
Thought for 29 sec
Ja - für dein Ziel sind 2 USB-C-Ports sinnvoll, also je einer pro ESP32.
Ich habe den überflüssigen dritten Port entfernt:
Damit bleibt jetzt die saubere Aufteilung:
Das ist auch die richtige Richtung für deinen Anwendungsfall:
- 1 Port pro MCU
- kein zusätzlicher dritter Debug-/Flash-Port ohne klaren Zweck
- weniger Platzbedarf, weniger Verwirrung, weniger unnötige USB-Beschaltung
USB-Beschaltung prüfen
ESD-Schutz ergänzen
CC-Widerstände kontrollieren
Auto-Reset prüfen
Thought for 1 min 38 sec
- Removed J6
- Removed U5
- Removed R15
- Removed R16
- Removed C9
⚠️ Removed components had their net connections destroyed. Use the connections tool with a
view action to verify connectivity and re-wire any lost connections.Refine this doc
Ask about this doc
Design Notes
AC-DC Module Replacement
- Replaced HLK-PM01 with IRM-03-5 in the mains input power stage.
- Preserved existing supply intent and net mapping:
- AC_L_FUSED -> AC live input of module
- AC_N -> AC neutral input of module
- +Vo -> 5V net
- -Vo -> GND net
- Existing downstream 5 V rail consumers remain unchanged, including the 5 V bulk capacitors and the input to the 3.3 V regulator.
Electrical Comparison
Table
| Parameter | HLK-PM01 | IRM-03-5 | Result |
|---|---|---|---|
| Output voltage | 5 V | 5 V | Compatible |
| Output power | 3 W | 3 W | Compatible |
| AC input range | 85-265 Vac | 85-305 Vac | IRM-03-5 meets/exceeds |
| Isolation | 3000 Vac withstand (datasheet extract) | Class II isolation (datasheet extract) | Isolated AC-DC intent preserved |
Integration Notes
- The replacement part exposes an extra NC pin which is intentionally left unconnected.
- Fuse F1 remains in series with the AC live path.
- MOV RV1 remains across AC_L_FUSED and AC_N.
- The 5 V rail topology after the converter is unchanged.
USB Service Port Update
- Added a second dedicated USB-C service connector so both MCUs now have their own service port.
- J3 is assigned to ESP32-S3 U1 and wired to its native USB interface:
- USB_DM -> U1 IO19
- USB_DP -> U1 IO20
- VBUS -> 5V
- CC1/CC2 -> 5.1 kOhm pull-downs to GND
- J5 remains the dedicated service port for ESP32-H2 U2:
- H2_USB_DM -> U2 IO26
- H2_USB_DP -> U2 IO27
- VBUS -> 5V
- CC1/CC2 -> 5.1 kOhm pull-downs to GND
- Added J6 plus U5, R15, R16, and C9 as a complete protected ESP32-S3 USB-C service interface mirroring the expected USB 2.0 device-port pattern.
- All three USB-C service connectors have their SBU pins intentionally marked no-connect.
AC-DC Module Replacement
Electrical Comparison
Integration Notes
USB Service Port Update
