# ten ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** avxp - **Created:** 2/12/2026 - **Last Updated:** 2/14/2026 - **Visibility:** Public - **Layout Notes:** - Place [IC1](https://www.flux.ai/:handle/:documentSlug?fit=IC1) + power stage loop compact: +48V_BUS -> FETs -> shunts ([U4](https://www.flux.ai/:handle/:documentSlug?fit=U4), [U5](https://www.flux.ai/:handle/:documentSlug?fit=U5), [U6](https://www.flux.ai/:handle/:documentSlug?fit=U6)) -> PGND. Keep high di/dt copper short and wide. - Keep [R1](https://www.flux.ai/:handle/:documentSlug?fit=R1) as the ONLY PGND<->GND star tie, placed adjacent to shunt cluster. - Route CSA Kelvin pairs from shunts to [IC1](https://www.flux.ai/:handle/:documentSlug?fit=IC1) (SPx/SNx) as tight pairs, away from switch node/phase copper. - Buck SW node (SW_BUCK net: [U1](https://www.flux.ai/:handle/:documentSlug?fit=U1) OUT, [L2](https://www.flux.ai/:handle/:documentSlug?fit=L2) P1, [D1](https://www.flux.ai/:handle/:documentSlug?fit=D1) pin1) keep copper small; place [D1](https://www.flux.ai/:handle/:documentSlug?fit=D1) and [C4](https://www.flux.ai/:handle/:documentSlug?fit=C4)/[C5](https://www.flux.ai/:handle/:documentSlug?fit=C5) close to [U1](https://www.flux.ai/:handle/:documentSlug?fit=U1). - Decouplers: place [C28](https://www.flux.ai/:handle/:documentSlug?fit=C28)/[C29](https://www.flux.ai/:handle/:documentSlug?fit=C29) at [IC1](https://www.flux.ai/:handle/:documentSlug?fit=IC1) DVDD/AVDD; place MCU [C20](https://www.flux.ai/:handle/:documentSlug?fit=C20), [C18](https://www.flux.ai/:handle/:documentSlug?fit=C18), [C21](https://www.flux.ai/:handle/:documentSlug?fit=C21), [C22](https://www.flux.ai/:handle/:documentSlug?fit=C22), [C19](https://www.flux.ai/:handle/:documentSlug?fit=C19) at each VDD pin. - Gate resistors ([R2](https://www.flux.ai/:handle/:documentSlug?fit=R2), [R3](https://www.flux.ai/:handle/:documentSlug?fit=R3), [R4](https://www.flux.ai/:handle/:documentSlug?fit=R4), [R5](https://www.flux.ai/:handle/:documentSlug?fit=R5), [R6](https://www.flux.ai/:handle/:documentSlug?fit=R6), [R7](https://www.flux.ai/:handle/:documentSlug?fit=R7)) must be within <5 mm of each MOSFET gate; keep gate drive loops short. - Motor phases: keep PHASE_A/B/C copper wide and symmetric to [J3](https://www.flux.ai/:handle/:documentSlug?fit=J3). - **System Architecture:** ```mermaid flowchart TD subgraph Power_Entry_Filter [Power Entry/Filter] J48["48V Input Connector"] -->|+48V_IN| F1["Fuse"] --> L1["Input Filter Inductor"] -->|+48V_BUS| BUS["48V Bus"] BUS --> D_TVS["TVS to PGND"] BUS --> CIN_BULK["Bulk Cap 63V"] BUS --> CIN_MLCC1["1uF 100V"] BUS --> CIN_MLCC2["100nF 100V"] end subgraph DCDC [DC-DC] BUS --> BUCK["48V to 5V Buck"] -->|+5V| V5["5V Rail"] BUCK --> LBUCK["Buck Inductor"] --> V5 BUCK --> DFREE["Freewheel Diode or Sync FET"] --> PGND V5 --> LDO["5V to 3.3V LDO"] -->|+3.3V| V33["3.3V Rail"] end subgraph Power_Stage [3-Phase Power Stage] BUS --> HS["3x High Side FET"] -->|PHASE_A/B/C| LS["3x Low Side FET"] --> SHUNT["Shunt"] --> PGND DRIVER["3-Phase Gate Driver"] --> HS DRIVER --> LS DRIVER --> BST["Bootstrap Diodes/Caps"] MTR["3-Pin Motor Connector"] -->|PHASE_A/B/C| HS end subgraph MCU [MCU] V33 --> MCU_IC["STM32G431CBT6"] MCU_IC --> SWD["5-Pin SWD"] MCU_IC -->|PWM| DRIVER end subgraph Current_Measurement [Current Measurement/Feedback] SHUNT --> CSA["Current Sense Amplifier"] -->|ADC| MCU_IC end subgraph Grounding [Grounding] PGND --> STAR["Star point near shunt"] --> GND end ``` ## Key Components ### D1 — [SBR20100CT](https://www.flux.ai/lcsc/sbr20100ct.md) - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410121549_Diodes-Incorporated-SBR20100CT_C507838.pdf - Package or Case Code: TO-220AB-3_L10.3-W5.0-P2.54-L - Role Details: Buck freewheel diode (D2), 100 V Schottky/SBR - Role: Rectifier - LCSC Part Number: C507838 - Manufacturer Part Number: SBR20100CT - Part Type: Super Barrier Rectifier (SBR) - Product Info Url: https://lcsc.com/product-detail/Schottky-Barrier-Diodes-SBD_Diodes-Incorporated-SBR20100CT_C507838.html - Manufacturer Name: DIODES(美台) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### IC1 — [DRV8305NQPHPRQ1](https://www.flux.ai/adrian95/drv8305nqphprq1.md) - Part Type: Integrated Circuit - Package: HTQFP-48 7x7mm - Role Details: DRV8305 gate driver w/ SPI, drives 6x external MOSFETs; current sense outputs SOA/SOB/SOC - Datasheet URL: https://www.ti.com/lit/ds/symlink/drv8305-q1.pdf - Manufacturer Part Number: DRV8305NQPHPRQ1 - Manufacturer Name: Texas Instruments - Role: 3-Phase Gate Driver - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - AVDD [pin 15] - CP1H [pin 43] - CP1L [pin 42] - CP2H [pin 39] - CP2L [pin 40] - DVDD [pin 46] - EN_GATE [pin 1] - GHA [pin 36] - GHB [pin 29] - GHC [pin 28] - GLA [pin 33] - GLB [pin 32] - GLC [pin 25] - GND_1 [pin 14] - GND_2 [pin 45] - GND_3 [pin 49] - INHA [pin 2] - INHB [pin 4] - INHC [pin 6] - INLA [pin 3] - INLB [pin 5] - INLC [pin 7] - NFAULT [pin 8] - NSCS [pin 9] - PVDD [pin 41] - PWRGD [pin 13] - SCLK [pin 12] - SDI [pin 10] - SDO [pin 11] - SHA [pin 35] - SHB [pin 30] - SHC [pin 27] - SLA [pin 34] - SLB [pin 31] - SLC [pin 26] - SN1 [pin 23] - SN2 [pin 21] - SN3 [pin 19] - SO1 [pin 16] - SO2 [pin 17] - SO3 [pin 18] - SP1 [pin 24] - SP2 [pin 22] - SP3 [pin 20] - VCP_LSD [pin 37] - VCPH [pin 38] - VDRAIN [pin 44] - VREG [pin 48] - WAKE [pin 47] ### J1 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p.md) - Role: Power Input - Role Details: 48 V input connector (+48V_IN, PGND) - Manufacturer Name: Ningbo Xinlaiya Elec. - Manufacturer Part Number: XY301V-A-5.0-2P **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J2 — [Pin Header 01x05 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x05-254mm-vertical.md) - Package: THT 1x5 2.54mm - Role: Connector - Part Type: Connector - Role Details: SWD header: 3.3V, SWDIO, SWCLK, NRST, GND - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### J3 — [0022232031](https://www.flux.ai/adrian95/0022232031.md) - Package: THT 1x3 2.54mm - Part Type: Connector - Manufacturer Name: Molex - Manufacturer Part Number: 0022232031 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 3-pin motor output connector for PHASE_A, PHASE_B, PHASE_C - Datasheet URL: https://www.molex.com/pdm_docs/sd/022232031_sd.pdf - Role: Motor Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### Q1 — [IRFS7730TRL7PP](https://www.flux.ai/lcsc/irfs7730trl7pp.md) - Manufacturer Name: Infineon(英飞凌) - Role Details: 3-phase inverter half-bridge MOSFETs; target <5 mOhm; 30A cont / 60A peak - LCSC Part Number: C500542 - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_Infineon-Technologies-IRFS7730TRL7PP_C500542.html - JLCPCB Part Class: Extended Part - Package: D2PAK-7 - Part Type: MOSFETs - Manufacturer Part Number: IRFS7730TRL7PP - Role: Power MOSFET - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003232008_Infineon-Technologies-IRFS7730TRL7PP_C500542.pdf - Package or Case Code: PG-TO263-7_L10.2-W10.4-P1.27-LS14.4-BR-PE4 **Pins:** - D [pin 8] - G [pin 1] - S [pin 3] - S [pin 7] - S [pin 2] - S [pin 6] - S [pin 5] ### Q2 — [IRFS7730TRL7PP](https://www.flux.ai/lcsc/irfs7730trl7pp.md) - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_Infineon-Technologies-IRFS7730TRL7PP_C500542.html - Part Type: MOSFETs - Manufacturer Part Number: IRFS7730TRL7PP - JLCPCB Part Class: Extended Part - Role: Power MOSFET - Manufacturer Name: Infineon(英飞凌) - Role Details: 3-phase inverter half-bridge MOSFETs; target <5 mOhm; 30A cont / 60A peak - LCSC Part Number: C500542 - Package: D2PAK-7 - Package or Case Code: PG-TO263-7_L10.2-W10.4-P1.27-LS14.4-BR-PE4 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003232008_Infineon-Technologies-IRFS7730TRL7PP_C500542.pdf **Pins:** - D [pin 8] - G [pin 1] - S [pin 3] - S [pin 7] - S [pin 2] - S [pin 6] - S [pin 5] ### Q3 — [IRFS7730TRL7PP](https://www.flux.ai/lcsc/irfs7730trl7pp.md) - JLCPCB Part Class: Extended Part - Manufacturer Part Number: IRFS7730TRL7PP - Part Type: MOSFETs - Role: Power MOSFET - Role Details: 3-phase inverter half-bridge MOSFETs; target <5 mOhm; 30A cont / 60A peak - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_Infineon-Technologies-IRFS7730TRL7PP_C500542.html - LCSC Part Number: C500542 - Manufacturer Name: Infineon(英飞凌) - Package or Case Code: PG-TO263-7_L10.2-W10.4-P1.27-LS14.4-BR-PE4 - Package: D2PAK-7 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003232008_Infineon-Technologies-IRFS7730TRL7PP_C500542.pdf **Pins:** - D [pin 8] - G [pin 1] - S [pin 3] - S [pin 7] - S [pin 2] - S [pin 6] - S [pin 5] ### Q4 — [IRFS7730TRL7PP](https://www.flux.ai/lcsc/irfs7730trl7pp.md) - JLCPCB Part Class: Extended Part - Manufacturer Part Number: IRFS7730TRL7PP - Role: Power MOSFET - Part Type: MOSFETs - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_Infineon-Technologies-IRFS7730TRL7PP_C500542.html - Role Details: 3-phase inverter half-bridge MOSFETs; target <5 mOhm; 30A cont / 60A peak - LCSC Part Number: C500542 - Manufacturer Name: Infineon(英飞凌) - Package: D2PAK-7 - Package or Case Code: PG-TO263-7_L10.2-W10.4-P1.27-LS14.4-BR-PE4 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003232008_Infineon-Technologies-IRFS7730TRL7PP_C500542.pdf **Pins:** - D [pin 8] - G [pin 1] - S [pin 3] - S [pin 7] - S [pin 2] - S [pin 6] - S [pin 5] ### Q5 — [IRFS7730TRL7PP](https://www.flux.ai/lcsc/irfs7730trl7pp.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003232008_Infineon-Technologies-IRFS7730TRL7PP_C500542.pdf - Package or Case Code: PG-TO263-7_L10.2-W10.4-P1.27-LS14.4-BR-PE4 - Role: Power MOSFET - Role Details: 3-phase inverter half-bridge MOSFETs; target <5 mOhm; 30A cont / 60A peak - Package: D2PAK-7 - Manufacturer Name: Infineon(英飞凌) - LCSC Part Number: C500542 - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_Infineon-Technologies-IRFS7730TRL7PP_C500542.html - Manufacturer Part Number: IRFS7730TRL7PP - Part Type: MOSFETs - JLCPCB Part Class: Extended Part **Pins:** - D [pin 8] - G [pin 1] - S [pin 3] - S [pin 7] - S [pin 2] - S [pin 6] - S [pin 5] ### Q6 — [IRFS7730TRL7PP](https://www.flux.ai/lcsc/irfs7730trl7pp.md) - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_Infineon-Technologies-IRFS7730TRL7PP_C500542.html - JLCPCB Part Class: Extended Part - Manufacturer Part Number: IRFS7730TRL7PP - Part Type: MOSFETs - Manufacturer Name: Infineon(英飞凌) - Role: Power MOSFET - Role Details: 3-phase inverter half-bridge MOSFETs; target <5 mOhm; 30A cont / 60A peak - LCSC Part Number: C500542 - Package or Case Code: PG-TO263-7_L10.2-W10.4-P1.27-LS14.4-BR-PE4 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003232008_Infineon-Technologies-IRFS7730TRL7PP_C500542.pdf - Package: D2PAK-7 **Pins:** - D [pin 8] - G [pin 1] - S [pin 3] - S [pin 7] - S [pin 2] - S [pin 6] - S [pin 5] ### U1 — [LM2576HVS-5.0/NOPB](https://www.flux.ai/adrian95/lm2576hvs-5p0nopb.md) - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flm2576hv - Manufacturer Part Number: LM2576HVS-5.0/NOPB - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Role: DC-DC Buck - Role Details: 48 V to 5 V regulator **Pins:** - FB [pin 4] - GND [pin 3] - GND [pin 6] - ON/OFF [pin 5] - OUT [pin 2] - VIN [pin 1] ### U2 — [STM32G431CBT6](https://www.flux.ai/lcsc/stm32g431cbt6.md) - Package or Case Code: LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL - Role Details: STM32G431CBT6 control MCU; SPI to DRV8305; ADC for current sense; SWD debug - IC Type: Microcontroller - Manufacturer Name: ST(意法半导体) - Operating Temperature: -40 ~ 85°C - Operating Voltage: 1.71 - 3.6V - Role: MCU - JLCPCB Part Class: Extended Part - Part Type: ST Microelectronics - Manufacturer Part Number: STM32G431CBT6 - LCSC Part Number: C529355 - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2304140030_STMicroelectronics-STM32G431CBT6_C529355.pdf - Frequency: 170MHz - Product Info Url: https://lcsc.com/product-detail/ST-Microelectronics_STMicroelectronics-STM32G431CBT6_C529355.html - Package: LQFP-48 7x7mm **Pins:** - PA0 [pin 8] - PA1 [pin 9] - PA10 [pin 32] - PA11 [pin 33] - PA12 [pin 34] - PA13 [pin 37] - PA14 [pin 38] - PA15 [pin 39] - PA2 [pin 10] - PA3 [pin 11] - PA4 [pin 12] - PA5 [pin 13] - PA6 [pin 14] - PA7 [pin 15] - PA8 [pin 30] - PA9 [pin 31] - PB0 [pin 16] - PB1 [pin 17] - PB10 [pin 22] - PB11 [pin 25] - PB12 [pin 26] - PB13 [pin 27] - PB14 [pin 28] - PB15 [pin 29] - PB2 [pin 18] - PB3 [pin 40] - PB4 [pin 41] - PB5 [pin 42] - PB6 [pin 43] - PB7 [pin 44] - PB8-BOOT0 [pin 45] - PB9 [pin 46] - PC13 [pin 2] - PC14-OSC32_IN [pin 3] - PC15-OSC32_OUT [pin 4] - PF0-OSC_IN [pin 5] - PF1-OSC_OUT [pin 6] - PG10-NRST [pin 7] - VBAT [pin 1] - VDD [pin 36] - VDD [pin 24] - VDD [pin 48] - VDDA [pin 21] - VREF+ [pin 20] - VSS [pin 23] - VSS [pin 47] - VSS [pin 35] - VSSA [pin 19] ### U3 — [AMS1117-3.3](https://www.flux.ai/vasy_skral/ams1117-33.md) - License: https://creativecommons.org/licenses/by/4.0/ - Package: SOT-223 - Role Details: 5V to 3.3V regulator for MCU and logic - Role: LDO - Part Type: Integrated Circuit - Symbol Style: Parametric - Manufacturer Part Number: AMS1117-3.3 - Datasheet URL: http://www.advanced-monolithic.com/pdf/ds1117.pdf - Manufacturer Name: AMS **Pins:** - GND [pin 1] - TAB(VOUT) [pin 4] - VIN [pin 3] - VOUT [pin 2] ### U4 — [WSL2512R0100FEA](https://www.flux.ai/lcsc/wsl2512r0100fea.md) - Role Details: Low-side shunt at each phase return to PGND; **1 mΩ**; Kelvin sense; star point adjacent - Manufacturer Name: VISHAY(威世) - Manufacturer Part Number: WSL2512R0100FEA - Package: 2512 - Package or Case Code: R2512 - Resistance: 1mΩ - LCSC Part Number: C844901 - JLCPCB Part Class: Extended Part - Role: Current Shunt **Pins:** - 1 [pin 1] - 2 [pin 2] ### U5 — [WSL2512R0100FEA](https://www.flux.ai/lcsc/wsl2512r0100fea.md) - Package: 2512 - Resistance: 1mΩ - Role: Current Shunt - Manufacturer Name: VISHAY(威世) - LCSC Part Number: C844901 - Manufacturer Part Number: WSL2512R0100FEA - Package or Case Code: R2512 - Role Details: Low-side shunt at each phase return to PGND; **1 mΩ**; Kelvin sense; star point adjacent - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### U6 — [WSL2512R0100FEA](https://www.flux.ai/lcsc/wsl2512r0100fea.md) - Manufacturer Name: VISHAY(威世) - Resistance: 1mΩ - JLCPCB Part Class: Extended Part - Role Details: Low-side shunt at each phase return to PGND; **1 mΩ**; Kelvin sense; star point adjacent - Package: 2512 - LCSC Part Number: C844901 - Package or Case Code: R2512 - Role: Current Shunt - Manufacturer Part Number: WSL2512R0100FEA **Pins:** - 1 [pin 1] - 2 [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/avxp/ten](https://www.flux.ai/avxp/ten).* --- *Generated from [https://www.flux.ai/avxp/ten](https://www.flux.ai/avxp/ten)*