BLDC Motor Sürücü Tasarımı
Thought for 32 sec
I’ll look for a Blue Pill module part, capture the existing STM32 pin connections, then replace U1 and reconnect the nets to the module headers where the Blue Pill exposes matching signals.
Worked for 1 min 28 sec
I found a suitable library part for the requested module:
- STM32 Blue Pill Breakout
partUid: 1f26f752-1a48-43fb-ad02-ccd6e19947ae- 40-terminal Blue Pill-style development board/module
I also captured the existing STM32G491 connections needed for remapping, including PWM, BEMF ADC, DC bus sense, current sense, SWD, UART, reset, BOOT0, 3V3, and CTRL_GND nets.
I’m blocked now because the account has no available ACUs, so AI execution tools are unavailable. Remaining work once ACUs are available:
- Inspect the Blue Pill module’s exact exposed pin names.
- Replace existing U1 STM32G491 LQFP MCU with the Blue Pill module.
- Reconnect compatible nets: PA0/PA1/PA2, PB0/PB1, PA8/PA9/PA10, PB13/PB14/PB15, PA13/PA14, PB6/PB7, NRST, BOOT0, 3V3, GND.
- Flag any incompatible/remapped pins.
- Run ERC and fix any resulting warnings.
Show pin mapping
Check net compatibility
Find module alternatives
Run ERC after replacement
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Project Specification — HV BLDC Dryer Driver
Project Overview
Status: Draft.
220 VAC / 50 Hz şebekeden beslenen, doğrultulmuş yaklaşık 310–325 VDC bus ile çalışan, kurutma makinesi BLDC/PMSM motoru için sensörsüz zıt-EMK algılamalı 6-adım sürücü kartı.
Intended Use
Kurutma makinesi içinde R&D/prototip amaçlı motor sürücü kartı. Bu tasarım ölümcül şebeke/HV seviyeleri içerir; açıkta çalıştırma ve debug yalnızca izole/diferansiyel ölçüm ekipmanlarıyla yapılmalıdır.
What the Device Should Do
- 220 VAC girişten HV DC bus üretmek.
- 3 faz BLDC/PMSM motoru 6-adım komütasyonla sürmek.
- Boşta kalan fazdan zıt-EMK sıfır geçişini algılamak.
- Aşırı akım, aşırı gerilim, düşük gerilim, aşırı sıcaklık ve stall durumlarında güvenli kapanmak.
Main Features
- Şebeke giriş sigortası, NTC inrush sınırlama ve MOV surge koruması.
- Köprü doğrultucu + 450 V HV bus kapasitörü + bleeder.
- İzole 12 V yardımcı besleme.
- STM32G491 motor kontrol MCU.
- U/V/W motor çıkış konnektörü.
- TBD: 650 V üç faz inverter/IPM veya ayrık MOSFET + HV gate driver.
System Architecture
Diagram
Hardware Subsystems
- Mains input/protection: J1, F1, RT1, RV1.
- HV DC bus: BR1, C1, R1/R2.
- Auxiliary supply: PS1 gives isolated 12 V; 3.3 V regulator still required.
- Control: U1 STM32G491 with basic decoupling/reset/BOOT0 support.
- Power stage: not yet implemented; library lacks suitable 600/650 V gate driver and 650 V MOSFET/IPM.
- Sensing: BEMF_U/V/W, DCBUS_VSENSE and DCBUS_ISENSE nets reserved.
Interfaces and Connections
Table
| Interface | Nets | Notes |
|---|---|---|
| Mains input | AC_L_IN, AC_N | 220 VAC hazardous live |
| HV bus | BUS_P_310V, BUS_N | ~310–325 VDC hazardous live |
| Motor output | MOTOR_U/V/W | Hazardous live phase outputs |
| Control rail | 12V_AUX, 3V3_CTRL, CTRL_GND | Must remain isolated from primary unless final architecture says otherwise |
| MCU PWM | PWM_UH/UL, PWM_VH/VL, PWM_WH/WL | Routed to final gate driver/IPM later |
Power Tree and Power Budget
Table
| Rail | Source | Preliminary Load | Notes |
|---|---|---|---|
| AC mains | J1 | <=2 A design limit | User specified max 2 A; fuse initially 2 A slow-blow |
| HV bus | BR1/C1 | 150 W motor nominal | Rectified mains; capacitor energy is hazardous |
| 12V_AUX | PS1 | 250 mA max module rating | Gate driver load may exceed this depending final driver |
| 3V3_CTRL | TBD regulator | ~100 mA preliminary | STM32 + sensing; regulator not yet added |
Manufacturing and Assembly Expectations
Prototype first. Final layout must use mains/HV creepage/clearance rules, primary/secondary isolation zones, slots where needed, and HV test procedure. Not ready for manufacturing.
Firmware-Relevant Hardware Requirements
- Open-loop alignment and ramp start before BEMF closed-loop operation.
- 30 electrical degree delay after BEMF zero crossing for 6-step commutation.
- Hardware fault input from final gate driver/IPM is mandatory.
- Watchdog and default gate-disable behavior required.
Physical Design Expectations
Board must separate hazardous primary/HV from isolated SELV/control. Motor phase routing, DC-link capacitor, gate loops, snubbers, and thermal paths are layout-critical.
Important Design Decisions
- Use rectified mains DC bus, not low-voltage BLDC driver topology.
- Use STM32G491 for motor-control PWM/ADC/comparator resources.
- Prefer 650 V IPM for first safe prototype if suitable part is available.
Assumptions
- Motor is BLDC/PMSM, not universal/asynchronous.
- Rated motor power is about 150 W and design limit is 2 A input/motor-side envelope.
- Control domain should remain isolated from user/debug interfaces.
Change Notes
- Initial schematic skeleton created with mains protection, rectifier, HV bus, isolated auxiliary supply, MCU support, and reserved motor/control nets.
Project Overview
Intended Use
What the Device Should Do
Main Features
System Architecture
Hardware Subsystems
Interfaces and Connections
Power Tree and Power Budget
Manufacturing and Assembly Expectations
Firmware-Relevant Hardware Requirements
Physical Design Expectations
Important Design Decisions
Assumptions
Change Notes
