# USB PDLC Film Controller ## Description Compact USB-C 5 V smart film sample controller that generates a selectable 60–80 VAC bipolar output for up to about 1 ft² of PDLC film, with automatic 1 s clear / 1 s frosted cycling and safety-focused high-voltage design. ## Project Details - **Owner:** smartglassaccessories - **Created:** 7/14/2026 - **Last Updated:** 7/14/2026 - **Visibility:** Public - **Domain:** Consumer Electronics - **Implementation Details:** USB-C 5V sink, MCU-controlled 75Hz PDLC H-bridge, selectable 60-80VAC RMS output, default 70VAC 1s on/off cycling. - **Operating Voltage:** 5V - **Power Requirements:** USB - **Human Interface:** Status LED ## Key Components ### D1 — [WE-TVS-82400102](https://www.flux.ai/kicad-part-library/we-tvs-82400102~vb9.md) - Role: ESD Protection - Manufacturer Part Number: WE-TVS-82400102 - Role Details: Low capacitance TVS array for USB-C configuration/control pins; confirm VBUS-specific protection in layout review - Datasheet URL: https://www.we-online.com/components/products/datasheet/82400102.pdf - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: SOT-23-6 **Pins:** - ~ [pin 5] - ~ [pin 1] - ~ [pin 4] - ~ [pin 2] - ~ [pin 3] - ~ [pin 6] ### D2 — [DFLS1150Q-7](https://www.flux.ai/lcsc/dfls1150q-7~soiv.md) - Package or Case Code: POWERDI-123_L2.8-W1.8-LS3.7-RD - JLCPCB Part Class: Extended Part - Part Type: Schottky Barrier Diodes (SBD) - Manufacturer Name: DIODES(美台) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912111437_Diodes-Incorporated-DFLS1150Q-7_C155245.pdf - LCSC Part Number: C155245 - Manufacturer Part Number: DFLS1150Q-7 - Role: Boost Rectifier - Product Info Url: https://lcsc.com/product-detail/Schottky-Barrier-Diodes-SBD_DIODES_DFLS1150Q-7_DFLS1150Q-7_C155245.html - Role Details: LT8365 output rectifier; 150V rating from LT8365 datasheet example family **Pins:** - A [pin 2] - C [pin 1] ### D3 — [SMF90A](https://www.flux.ai/lcsc/smf90a~qsux.md) - Manufacturer Part Number: SMF90A - Role: Overvoltage Clamp - Package or Case Code: SOD-123_L2.8-W1.8-LS3.7-RD - Product Info Url: https://lcsc.com/product-detail/Others_Formosa-Microsemi-SMF90A_C266709.html - Manufacturer Name: FMS(美丽微) - JLCPCB Part Class: Extended Part - Part Type: TVS - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_FMS-Formosa-Microsemi-SMF90A_C266709.pdf - Role Details: HV bus TVS clamp; must be coordinated with feedback setting and optional 90VAC development mode - LCSC Part Number: C266709 **Pins:** - 1 [pin 1] - 2 [pin 2] ### D4 — [SML-D13FWT86C](https://www.flux.ai/cherepanyadima/sml-d13fwt86c.md) - Role Details: MCU-controlled status LED; can be disabled by not populating series resistor/jumper option - Role: Status Indicator - Part Type: Optoelectronic Devices - Manufacturer Part Number: SML-D13FWT86C - Manufacturer Name: Rohm Semiconductor - Datasheet URL: https://www.snapeda.com/parts/SML-D13FWT86C/Rohm%20Semiconductor/datasheet/ **Pins:** - 1 [pin 1] - 2 [pin 2] ### F1 — [NANOSMDC200F-2](https://www.flux.ai/adrian95/nanosmdc200f-2.md) - Role Details: 2A hold resettable fuse for USB-C 5V input protection and startup margin - Manufacturer Name: Littelfuse - Manufacturer Part Number: NANOSMDC200F-2 - Role: Input Fuse - Mount: Surface Mount - Datasheet URL: https://www.littelfuse.com/assetdocs/littelfuse-ptc-nanosmdc-datasheet?assetguid=2f577573-06ff-4a40-bed7-97598401ae57 - Part Type: Circuit Protection Devices **Pins:** - ~ [pin 1] - ~ [pin 2] ### J1 — [TYPE-C 16PIN 2MD(073)](https://www.flux.ai/lcsc/type-c-16pin-2md073~ish6.md) - Package or Case Code: USB-C-SMD_TYPE-C-6PIN-2MD-073 - Manufacturer Part Number: TYPE-C 16PIN 2MD(073) - Datasheet URL: https://www.lcsc.com/datasheet/C2765186.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=T1kIXgFeT1NaU1RXQFBbUlUHT1cKU1NXFVBeX1VSTlAxVlNeR1VeXlZWRlVeUzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - JLCPCB Part Class: Extended Part - Manufacturer Name: SHOU HAN(首韩) - Part Type: USB Connectors - Role Details: USB-C sink input; CC1/CC2 use independent 5.1kΩ Rd resistors for 5V operation without PD - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - LCSC Part Number: C2765186 - Role: Power Input Connector **Pins:** - CC1 [pin 4] - CC2 [pin 10] - DN1 [pin 7] - DN2 [pin 5] - DP1 [pin 6] - DP2 [pin 8] - GND [pin 12] - GND [pin 1] - SBU1 [pin 9] - SBU2 [pin 3] - SHELL [pin 16] - SHELL [pin 15] - SHELL [pin 13] - SHELL [pin 14] - VBUS [pin 2] - VBUS [pin 11] ### J2 — [DG250-3.5-02P-11-00A(H)](https://www.flux.ai/adrian95/dg250-3p5-02p-11-00ah~77l.md) - Role: High Voltage Output Connector - Manufacturer Part Number: DG250-3.5-02P-11-00A(H) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.tme.com/Document/74a50bb60bd70b3c953bc54e89073085/DG250-3.5.pdf - Manufacturer Name: Degson - Role Details: Two-pin compact terminal block for enclosed PDLC film leads; avoid exposed pin headers - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### J3 — [TC2050-IDC-NL](https://www.flux.ai/silicon-yard/tc2050-idc-nl~34.md) - Role: Programming Connector - Symbol Style: parametric-v1 - Manufacturer Name: Tag-Connect LLC - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/2aee8d6a578fb882feb29d3944bc737e59bdab01be9b1ac908754027084e6be5.pdf - Part Type: Connector - Role Details: Tag-Connect SWD pogo pads for ATSAMD10 programming and production test - Manufacturer Part Number: TC2050-IDC-NL **Pins:** - 1 [pin 1] - 10 [pin 10] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] ### Q1 — [BSS131H6327XTSA1](https://www.flux.ai/lcsc/bss131h6327xtsa1~hq64.md) - Product Info Url: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html - LCSC Part Number: C151498 - Part Type: MOSFETs - Role: H-Bridge MOSFET - Package or Case Code: SOT-23_L2.9-W1.3-P1.90-LS2.4-BR - JLCPCB Part Class: Extended Part - Role Details: 240V low-current N-MOSFET high-side device for PDLC capacitive load; verify current with actual film capacitance - Manufacturer Part Number: BSS131H6327XTSA1 - Manufacturer Name: Infineon(英飞凌) - Datasheet URL: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q2 — [BSS131H6327XTSA1](https://www.flux.ai/lcsc/bss131h6327xtsa1~hq64.md) - Part Type: MOSFETs - LCSC Part Number: C151498 - Product Info Url: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html - Role Details: 240V low-current N-MOSFET low-side device for PDLC capacitive load - Package or Case Code: SOT-23_L2.9-W1.3-P1.90-LS2.4-BR - Role: H-Bridge MOSFET - Manufacturer Name: Infineon(英飞凌) - Manufacturer Part Number: BSS131H6327XTSA1 - JLCPCB Part Class: Extended Part - Datasheet URL: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q3 — [BSS131H6327XTSA1](https://www.flux.ai/lcsc/bss131h6327xtsa1~hq64.md) - Datasheet URL: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html - Manufacturer Part Number: BSS131H6327XTSA1 - Manufacturer Name: Infineon(英飞凌) - JLCPCB Part Class: Extended Part - Role: H-Bridge MOSFET - Package or Case Code: SOT-23_L2.9-W1.3-P1.90-LS2.4-BR - Role Details: 240V low-current N-MOSFET high-side device for PDLC capacitive load; verify current with actual film capacitance - Part Type: MOSFETs - LCSC Part Number: C151498 - Product Info Url: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q4 — [BSS131H6327XTSA1](https://www.flux.ai/lcsc/bss131h6327xtsa1~hq64.md) - Role Details: 240V low-current N-MOSFET low-side device for PDLC capacitive load - Datasheet URL: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html - Manufacturer Part Number: BSS131H6327XTSA1 - Manufacturer Name: Infineon(英飞凌) - Role: H-Bridge MOSFET - JLCPCB Part Class: Extended Part - Package or Case Code: SOT-23_L2.9-W1.3-P1.90-LS2.4-BR - LCSC Part Number: C151498 - Product Info Url: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html - Part Type: MOSFETs **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q5 — [IRLML2502](https://www.flux.ai/lcsc/irlml2502~q9d8.md) - Manufacturer Name: HUASHUO(华朔) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: MCU-controlled MOSFET switching 47Ω USB power-bank keep-alive load - Package or Case Code: SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR - LCSC Part Number: C518800 - Role: Low-Side Switch - Manufacturer Part Number: IRLML2502 - JLCPCB Part Class: Extended Part - Part Type: MOSFETs - Product Info Url: https://lcsc.com/product-detail/MOSFET_HUASHUO-IRLML2502_C518800.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2005121032_HUASHUO-IRLML2502_C518800.pdf **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q6 — [BSS131H6327XTSA1](https://www.flux.ai/lcsc/bss131h6327xtsa1~hq64.md) - Role Details: Optional low-side discharge clamp for OUT_A through resistor; only enable while bridge is off - Role: Active Discharge Switch - Package or Case Code: SOT-23_L2.9-W1.3-P1.90-LS2.4-BR - LCSC Part Number: C151498 - Product Info Url: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html - Part Type: MOSFETs - Datasheet URL: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html - Manufacturer Part Number: BSS131H6327XTSA1 - Manufacturer Name: Infineon(英飞凌) - JLCPCB Part Class: Extended Part **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q7 — [BSS131H6327XTSA1](https://www.flux.ai/lcsc/bss131h6327xtsa1~hq64.md) - Datasheet URL: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html - Role Details: Optional low-side discharge clamp for OUT_B through resistor; only enable while bridge is off - JLCPCB Part Class: Extended Part - Manufacturer Name: Infineon(英飞凌) - Manufacturer Part Number: BSS131H6327XTSA1 - Role: Active Discharge Switch - Package or Case Code: SOT-23_L2.9-W1.3-P1.90-LS2.4-BR - Product Info Url: https://lcsc.com/product-detail/MOSFET_Infineon_BSS131H6327XTSA1_BSS131H6327XTSA1_C151498.html - LCSC Part Number: C151498 - Part Type: MOSFETs **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### U1 — [LT8365EMSE#PBF](https://www.flux.ai/lcsc/lt8365emsepbf~26v8.md) - Part Type: DC-DC Converters - Manufacturer Part Number: LT8365EMSE#PBF - Role: HV Boost Regulator - JLCPCB Part Class: Extended Part - Package or Case Code: MSOP-16_12P-L4.0-W3.0-P0.50-LS4.9-BL-EP - Role Details: 2.8-60V input boost converter with 1.5A/150V internal switch; configured for ~70-80V HV bus - LCSC Part Number: C673785 - Product Info Url: https://lcsc.com/product-detail/Pre-ordered-Products_Analog-Devices_LT8365EMSE-PBF_Analog-Devices-ADI-LINEAR-LT8365EMSE-PBF_C673785.html - Manufacturer Name: ADI(亚德诺) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Analog-Devices-LT8365EMSE-PBF_C673785.pdf **Pins:** - BIAS [pin 7] - EN/UVLO [pin 1] - EP [pin 17] - FBX [pin 9] - INTVCC [pin 5] - NC [pin 6] - RT [pin 10] - SS [pin 11] - SW1 [pin 16] - SW2 [pin 14] - SYNC/MODE [pin 12] - VC [pin 8] - VIN [pin 3] ### U2 — [ATSAMD10C13A-SS](https://www.flux.ai/vasyl/atsamd10c13a-ss~vy2.md) - Manufacturer Name: Microchip - Part Type: Microcontroller - Manufacturer Part Number: ATSAMD10C13A-SS - Role: Microcontroller - Datasheet URL: http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-42242-SAM-D10_Datasheet.pdf - Role Details: 3.3V MCU controls 1s cycling, 75Hz bridge timing, keep-alive pulses, discharge and status LED **Pins:** - GND [pin 11] - PA02 [pin 13] - PA04 [pin 14] - PA05 [pin 1] - PA08/XIN [pin 2] - PA09/XOUT [pin 3] - PA14 [pin 4] - PA15 [pin 5] - PA24 [pin 9] - PA25 [pin 10] - PA28/~RST [pin 6] - PA30/SWCLK [pin 7] - PA31/SWDIO [pin 8] - VDD [pin 12] ### U3 — [TLV70333DBVR](https://www.flux.ai/lcsc/tlv70333dbvr~mgi8.md) - Manufacturer Part Number: TLV70333DBVR - Symbol Style: parametric-v1 - LCSC Part Number: C2871194 - Datasheet URL: https://www.ti.com/lit/ds/symlink/tlv703.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1779904572108&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftlv703 - Part Type: Linear Voltage Regulators (LDO) - Role: 3.3V Regulator - Manufacturer Name: TI(德州仪器) - Role Details: Generates 3.3V rail for MCU and configuration logic from protected USB 5V - JLCPCB Part Class: Extended Part - Package or Case Code: SOT-23-5_L2.9-W1.6-P0.95-LS2.8-BR **Pins:** - EN [pin 3] - GND [pin 2] - IN [pin 1] - NC [pin 4] - OUT [pin 5] ### U4 — UCC27282DRCT Fixed 10-WSON - Manufacturer Name: Texas Instruments - Role: Half-Bridge Gate Driver - Manufacturer Part Number: UCC27282DRCT - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/7b993a9c0d1be9d822b4ed49c5b12491fa2f0bf0b81572b7e040da4c946569da.pdf - Role Details: Corrected local UCC27282DRCT 10-WSON for OUT_A leg; replaces library footprint with overlapping auxiliary thermal pads. - Part Type: Integrated Circuits - Package or Case Code: 10-WSON **Pins:** - EN [pin 6] - HB [pin 3] - HI [pin 7] - HO [pin 4] - HS [pin 5] - LI [pin 8] - LO [pin 10] - NC [pin 2] - THERMALPAD [pin Thermal Pad] - VDD [pin 1] - VSS [pin 9] ### U5 — UCC27282DRCT Fixed 10-WSON - Manufacturer Name: Texas Instruments - Role Details: Corrected local UCC27282DRCT 10-WSON for OUT_B leg; replaces library footprint with overlapping auxiliary thermal pads. - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/7b993a9c0d1be9d822b4ed49c5b12491fa2f0bf0b81572b7e040da4c946569da.pdf - Manufacturer Part Number: UCC27282DRCT - Package or Case Code: 10-WSON - Role: Half-Bridge Gate Driver - Part Type: Integrated Circuits **Pins:** - EN [pin 6] - HB [pin 3] - HI [pin 7] - HO [pin 4] - HS [pin 5] - LI [pin 8] - LO [pin 10] - NC [pin 2] - THERMALPAD [pin Thermal Pad] - VDD [pin 1] - VSS [pin 9] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/smartglassaccessories/usb-pdlc-film-controller~y4](https://www.flux.ai/smartglassaccessories/usb-pdlc-film-controller~y4).* --- *Generated from [https://www.flux.ai/smartglassaccessories/usb-pdlc-film-controller~y4](https://www.flux.ai/smartglassaccessories/usb-pdlc-film-controller~y4)*