Compare commits
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5615fff072
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Rev.0.3
| Author | SHA1 | Date | |
|---|---|---|---|
| ccf4d66c7b |
@@ -7,25 +7,6 @@ Alle wichtigen Änderungen an diesem Projekt werden in dieser Datei dokumentiert
|
||||
Das Format basiert auf [Keep a Changelog](https://keepachangelog.com/de/1.0.0/),
|
||||
und dieses Projekt folgt [Semantic Versioning](https://semver.org/lang/de/).
|
||||
|
||||
## [Unreleased]
|
||||
|
||||
### Behoben
|
||||
- **USB-Hub-Controller (U401/CH334):** Pin 4 (XO) auf GND gelegt, um den Betrieb ohne Kristall zu ermöglichen
|
||||
- **DC/DC-Wandler (U202/XR76208):** Enable-Beschaltung von Spannungsteiler auf Zenerdiode geändert, um 12V-Betrieb zu ermöglichen
|
||||
- **USB-Ausgänge:** Sicherungen durch TPS2557 Power-Distribution-Switches ersetzt, um Backfeeding zu verhindern
|
||||
|
||||
### Geändert
|
||||
- **Produktion:** Testpunkte TP202/TP203 von Stückliste ausgeschlossen
|
||||
- **JLCPCB Optimierung:** Rotations-Offsets für automatische Bestückung angepasst
|
||||
- U202/U301: FT Rotation Offset 270°
|
||||
- U401: FT Rotation Offset 180°
|
||||
|
||||
### Technische Details
|
||||
- **USB-Hub Stabilität:** CH334 arbeitet nun im internen Oszillator-Modus ohne externen Kristall
|
||||
- **Erweiterte Eingangsspannung:** XR76208 unterstützt nun 12-24V Eingangsspannung durch Zenerdioden-basierte Enable-Schaltung
|
||||
- **USB-Backfeed-Schutz:** TPS2557 verhindert Rückspeisung von externen USB-Geräten und bietet Überstrom-/Kurzschlussschutz
|
||||
- **Fertigungseffizienz:** Optimierte Bauteil-Orientierung reduziert Produktionszeit
|
||||
|
||||
## [Rev. 0.3] - 2025-12-09
|
||||
|
||||
### Hinzugefügt
|
||||
|
||||
19
CHANGELOG.md
19
CHANGELOG.md
@@ -7,25 +7,6 @@ All notable changes to this project will be documented in this file.
|
||||
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
|
||||
and this project adheres to [Semantic Versioning](https://semver.org/).
|
||||
|
||||
## [Unreleased]
|
||||
|
||||
### Fixed
|
||||
- **USB Hub Controller (U401/CH334):** Pin 4 (XO) connected to GND to enable operation without crystal
|
||||
- **DC/DC Converter (U202/XR76208):** Enable circuit changed from voltage divider to Zener diode to enable 12V operation
|
||||
- **USB Outputs:** Fuses replaced with TPS2557 power distribution switches to prevent backfeeding
|
||||
|
||||
### Changed
|
||||
- **Production:** Test points TP202/TP203 excluded from BOM
|
||||
- **JLCPCB Optimization:** Rotation offsets adjusted for automated assembly
|
||||
- U202/U301: FT Rotation Offset 270°
|
||||
- U401: FT Rotation Offset 180°
|
||||
|
||||
### Technical Details
|
||||
- **USB Hub Stability:** CH334 now operates in internal oscillator mode without external crystal
|
||||
- **Extended Input Voltage:** XR76208 now supports 12-24V input voltage through Zener diode-based enable circuit
|
||||
- **USB Backfeed Protection:** TPS2557 prevents backfeeding from external USB devices and provides overcurrent/short-circuit protection
|
||||
- **Manufacturing Efficiency:** Optimized component orientation reduces production time
|
||||
|
||||
## [Rev. 0.3] - 2025-12-09
|
||||
|
||||
### Added
|
||||
|
||||
21655
EWS.kicad_pcb
21655
EWS.kicad_pcb
File diff suppressed because it is too large
Load Diff
@@ -804,6 +804,6 @@
|
||||
]
|
||||
],
|
||||
"text_variables": {
|
||||
"PROJEKT_REV": "1.0"
|
||||
"PROJEKT_REV": "0.3"
|
||||
}
|
||||
}
|
||||
|
||||
@@ -3,7 +3,7 @@
|
||||
(generator "eeschema")
|
||||
(generator_version "9.0")
|
||||
(uuid "4ae99543-64c8-472f-befd-04c32f138656")
|
||||
(paper "A3")
|
||||
(paper "A4")
|
||||
(title_block
|
||||
(title "EWS - Power, CANbus and USB HAT for 3D Printers")
|
||||
(date "2025-12-04")
|
||||
|
||||
17
README.de.md
17
README.de.md
@@ -89,7 +89,6 @@ Dieses Board wurde entwickelt, um mehrere kritische Probleme zu lösen, die häu
|
||||
### ⚡ DC/DC Wandler (5V Ausgang)
|
||||
|
||||
- **Controller:** MaxLinear XR76208 (Synchroner Step-Down, 8A, COT)
|
||||
- **Eingangsspannung:** 12-24V DC (Enable-Schaltung mit Zenerdiode)
|
||||
- **Eingangssicherung:** 5A SMD 1812 Slow Blow
|
||||
- **Verpolschutz:** SS56 Schottky-Diode
|
||||
- **Ausgangsspannung:** 5.1V (eingestellt über Feedback-Teiler: R_Top=15kΩ, R_Bottom=2.0kΩ)
|
||||
@@ -100,7 +99,7 @@ Dieses Board wurde entwickelt, um mehrere kritische Probleme zu lösen, die häu
|
||||
- **Stabilität:** Feed-Forward Kondensator (Cff) 1nF parallel zum oberen Feedback-Widerstand
|
||||
- **Soft-Start:** 100nF an Pin SS (ca. 6ms Anlaufzeit)
|
||||
- **Stromlimit:** 5.1kΩ Widerstand (~10.2A Grenzwert)
|
||||
- **Enable:** Zenerdioden-basierte Schaltung für 12-24V Eingangsspannungsbereich
|
||||
- **Enable:** Spannungsteiler von 24V (100kΩ oben, 22kΩ unten) = ca. 4.3V am Pin
|
||||
|
||||
### 🔌 Logik-Spannungsversorgung (Power Path)
|
||||
|
||||
@@ -131,7 +130,7 @@ Dieses Board wurde entwickelt, um mehrere kritische Probleme zu lösen, die häu
|
||||
|
||||
- **Controller:** WCH CH334F (QFN-24)
|
||||
- **Geschwindigkeit:** USB 2.0 High Speed (480 Mbit/s) mit MTT
|
||||
- **Taktung:** Intern (Crystal-less), XO Pin auf GND gelegt für internen Oszillator-Modus
|
||||
- **Taktung:** Intern (Crystal-less), XI/XO Pins offen gelassen
|
||||
- **Versorgung:** V5 an +5V_LOGIC
|
||||
- **Upstream:** Zum Raspberry Pi Header (USB Loopback Kabel erforderlich) oder USB-C Input
|
||||
- **Downstream Ports:**
|
||||
@@ -140,16 +139,14 @@ Dieses Board wurde entwickelt, um mehrere kritische Probleme zu lösen, die häu
|
||||
- USB-A Buchse (Vertikal, für Webcam)
|
||||
|
||||
**USB Port Absicherung:**
|
||||
- **Konzept:** 100µF Elko als Tank an +5V_PWR, gefolgt von TPS2557 Power Distribution Switch, gefolgt von 22µF Keramik an der Buchse
|
||||
- **Konzept:** 100µF Elko als Tank an +5V_PWR, gefolgt von Polyfuse, gefolgt von 22µF Keramik an der Buchse
|
||||
- **USB-C Port (Screen):**
|
||||
- TPS2557: Power Distribution Switch mit Backfeed-Schutz, Überstrom-/Kurzschlussschutz
|
||||
- Strombegrenzung: Programmierbarer Limit durch externen Widerstand
|
||||
- CC-Leitungen: CC1 und CC2 jeweils mit eigenem 10kOhm Widerstand an VBUS (hinter dem Switch) gezogen (Source 3A Advertisement)
|
||||
- Polyfuse: 4.0A Hold Current (Derating für Hot Chamber berücksichtigt)
|
||||
- CC-Leitungen: CC1 und CC2 jeweils mit eigenem 10kOhm Widerstand an VBUS (hinter der Sicherung) gezogen (Source 3A Advertisement)
|
||||
- ESD-Schutz: SRV05-4 TVS-Array
|
||||
- **USB-A Port (Webcam):**
|
||||
- TPS2557: Power Distribution Switch mit Backfeed-Schutz, Überstrom-/Kurzschlussschutz
|
||||
- Strombegrenzung: Programmierbarer Limit durch externen Widerstand
|
||||
- ESD-Schutz: SRV05-4 TVS-Array
|
||||
- Polyfuse: 1.5A Hold Current
|
||||
- **ESD-Schutz:** SRV05-4 TVS-Array
|
||||
|
||||
## 📋 Klipper Konfiguration
|
||||
|
||||
|
||||
17
README.md
17
README.md
@@ -89,7 +89,6 @@ This board was designed to solve multiple critical issues commonly encountered i
|
||||
### ⚡ DC/DC Converter (5V Output)
|
||||
|
||||
- **Controller:** MaxLinear XR76208 (Synchronous Step-Down, 8A, COT)
|
||||
- **Input Voltage:** 12-24V DC (enable circuit with Zener diode)
|
||||
- **Input Fuse:** 5A SMD 1812 Slow Blow
|
||||
- **Reverse Polarity Protection:** SS56 Schottky diode
|
||||
- **Output Voltage:** 5.1V (set via feedback divider: R_Top=15kΩ, R_Bottom=2.0kΩ)
|
||||
@@ -100,7 +99,7 @@ This board was designed to solve multiple critical issues commonly encountered i
|
||||
- **Stability:** Feed-forward capacitor (Cff) 1nF parallel to upper feedback resistor
|
||||
- **Soft-Start:** 100nF at SS pin (~6ms startup time)
|
||||
- **Current Limit:** 5.1kΩ resistor (~10.2A limit)
|
||||
- **Enable:** Zener diode-based circuit for 12-24V input voltage range
|
||||
- **Enable:** Voltage divider from 24V (100kΩ upper, 22kΩ lower) = ~4.3V at pin
|
||||
|
||||
### 🔌 Logic Power Supply (Power Path)
|
||||
|
||||
@@ -131,7 +130,7 @@ This board was designed to solve multiple critical issues commonly encountered i
|
||||
|
||||
- **Controller:** WCH CH334F (QFN-24)
|
||||
- **Speed:** USB 2.0 High Speed (480 Mbit/s) with MTT
|
||||
- **Clocking:** Internal (crystal-less), XO pin connected to GND for internal oscillator mode
|
||||
- **Clocking:** Internal (crystal-less), XI/XO pins left open
|
||||
- **Supply:** V5 to +5V_LOGIC
|
||||
- **Upstream:** To Raspberry Pi Header (USB loopback cable required) or USB-C input
|
||||
- **Downstream Ports:**
|
||||
@@ -140,16 +139,14 @@ This board was designed to solve multiple critical issues commonly encountered i
|
||||
- USB-A connector (vertical, for webcam)
|
||||
|
||||
**USB Port Protection:**
|
||||
- **Concept:** 100µF electrolytic tank at +5V_PWR, followed by TPS2557 power distribution switch, followed by 22µF ceramic at connector
|
||||
- **Concept:** 100µF electrolytic tank at +5V_PWR, followed by polyfuse, followed by 22µF ceramic at connector
|
||||
- **USB-C Port (Screen):**
|
||||
- TPS2557: Power distribution switch with backfeed protection, overcurrent/short-circuit protection
|
||||
- Current limiting: Programmable limit via external resistor
|
||||
- CC Lines: CC1 and CC2 each with 10kΩ resistor to VBUS (behind switch) for 3A advertisement
|
||||
- Polyfuse: 4.0A hold current (hot chamber derating considered)
|
||||
- CC Lines: CC1 and CC2 each with 10kΩ resistor to VBUS (behind fuse) for 3A advertisement
|
||||
- ESD Protection: SRV05-4 TVS array
|
||||
- **USB-A Port (Webcam):**
|
||||
- TPS2557: Power distribution switch with backfeed protection, overcurrent/short-circuit protection
|
||||
- Current limiting: Programmable limit via external resistor
|
||||
- ESD Protection: SRV05-4 TVS array
|
||||
- Polyfuse: 1.5A hold current
|
||||
- **ESD Protection:** SRV05-4 TVS array
|
||||
|
||||
## 📋 Klipper Configuration
|
||||
|
||||
|
||||
2787
conn.kicad_sch
2787
conn.kicad_sch
File diff suppressed because it is too large
Load Diff
@@ -3,7 +3,7 @@
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|
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(title "EWS - Power, CANbus and USB HAT for 3D Printers")
|
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538
power.kicad_sch
538
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Binary file not shown.
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||||
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||||
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|
||||
D301,0805,1,GREEN,C2297
|
||||
D302,SOT-23,1,PESD1CAN,C907838
|
||||
"D401, D402",D_SOD-323,2,BZT52C15S,C19077448
|
||||
@@ -18,6 +17,8 @@ D404,D_SMA,1,SMAJ26A,C19077543
|
||||
"D405, D406",D_SOD-323,2,1N5819WS,C191023
|
||||
F201,1206,1,3A,C163126
|
||||
"F401, F402",1206,2,5A,C163128
|
||||
F403,0805,1,4A,C2680546
|
||||
F404,0805,1,1.5A,C914095
|
||||
HS201,HeatSink_9x9x5,1,Heatsink,
|
||||
J301,PinSocket_2x20_P2.54mm_Vertical,1,GPIO,
|
||||
J401,AMASS_XT30PW-M_1x02_P2.50mm_Horizontal,1,XT30,C431092
|
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@@ -28,22 +29,23 @@ L201,L_APV_APH1050,1,3.3uH,C2847560
|
||||
"Q401, Q402",AO_DFN-8-1EP_5.55x5.2mm_P1.27mm_EP4.12x4.6mm,2,CJAC70P06,C2898279
|
||||
"Q403, Q404",SOT-23,2,AO3400A,C20917
|
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R201,0402,1,22k,C25768
|
||||
R202,0402,1,2k2,C25879
|
||||
"R202, R205",0402,2,2k2,C25879
|
||||
"R203, R302, R305, R407, R408",0402,5,1k,C11702
|
||||
"R204, R206, R303, R411, R412",0402,5,10k,C25744
|
||||
"R207, R401, R402, R403, R404, R405, R406, R413",0402,8,33k,C25779
|
||||
R204,0402,1,100k,C25741
|
||||
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|
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|
||||
"R208, R409, R410",0402,3,5k1,C25905
|
||||
R209,0603,1,1R,C22936
|
||||
R210,0402,1,15k,C25756
|
||||
R211,0402,1,2k,C4109
|
||||
R301,0402,1,330R,C25104
|
||||
R304,0603,1,120R,C22787
|
||||
R414,0603,1,68k,C23231
|
||||
"SW301, SW302",SW_SPST_TS-1088-xR020,2,TS-1088,C720477
|
||||
TP202,TestPoint_Pad_D3.0mm,1,5V,
|
||||
TP203,TestPoint_Pad_D3.0mm,1,GND,
|
||||
U201,SOT-23-3,1,XC6206P332MR,C5446
|
||||
U202,IC_XR76208ELTR-F,1,XR76208,C555356
|
||||
U202,IC_XR76203ELTR-F,1,XR76208,C555356
|
||||
U301,HVSON-8-1EP_3x3mm_P0.65mm_EP1.6x2.4mm,1,TJA1051TK-3,C2875699
|
||||
U302,QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm,1,STM32G0B1KBUx,C5159549
|
||||
U401,QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm_ThermalVias,1,CH334F,C5187527
|
||||
"U402, U403, U404",SOT-23-6,3,USBLC6-2SC6,C2687116
|
||||
"U405, U406",S-PVSON-N8,2,TPS2557,
|
||||
|
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|
@@ -31,7 +31,6 @@ C406:1
|
||||
D201:1
|
||||
D202:1
|
||||
D203:1
|
||||
D204:1
|
||||
D301:1
|
||||
D302:1
|
||||
D401:1
|
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@@ -43,6 +42,8 @@ D406:1
|
||||
F201:1
|
||||
F401:1
|
||||
F402:1
|
||||
F403:1
|
||||
F404:1
|
||||
HS201:1
|
||||
J301:1
|
||||
J401:1
|
||||
@@ -79,6 +80,7 @@ R201:1
|
||||
R202:1
|
||||
R203:1
|
||||
R204:1
|
||||
R205:1
|
||||
R206:1
|
||||
R207:1
|
||||
R208:1
|
||||
@@ -102,8 +104,6 @@ R409:1
|
||||
R410:1
|
||||
R411:1
|
||||
R412:1
|
||||
R413:1
|
||||
R414:1
|
||||
SW301:1
|
||||
SW302:1
|
||||
TP201:1
|
||||
@@ -120,5 +120,3 @@ U401:1
|
||||
U402:1
|
||||
U403:1
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U404:1
|
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U405:1
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U406:1
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File diff suppressed because it is too large
Load Diff
@@ -25,14 +25,13 @@ C306,142.875,-77.6,180.0,top
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C307,142.875,-75.2,180.0,top
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D401,156.6375,-89.85,90.0,top
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@@ -44,6 +43,8 @@ D406,184.15,-79.25,0.0,top
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Reference in New Issue
Block a user