Wassasin/leddimmerQuick low-side PWM device to crudely dim two 24V 4A LED strips
Leddimmer hw is an open-source printed circuit board by Wassasin, from the Wassasin/leddimmer repository on GitHub. It is a 4-layer board of 52 × 80 mm with 117 parts on 69 nets, routed with 565 tracks and 249 vias.
It is built around the ESP32-C3-WROOM-02-H4, UCC27511DBVR(UMW) and TPS54332DDAR, with the NCV8460AD, AP2112K-3.3 and SJD12A28L01 among its other parts. Its parts include 38 resistors, 37 capacitors, 15 diodes, 9 ICs and 5 connectors. It belongs with the ESP32 and RISC-V boards of this library.
Quick low-side PWM device to crudely dim two 24V 4A LED strips.
Uses ESP32-C3 LEDC peripheral to provide the PWM signal, and uses two low side gate drivers to pull a N-channel Mosfet. Uses high side current limiters and fuses as protection.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 1Ohm | Resistor_SMD:R_0402_1005Metric | R201, R203, R204, R207, R208, R209, R210, R301, R303, R304, R307, R308, R309, R310 |
| 12 | 100nF | Capacitor_SMD:C_0402_1005Metric | C201, C204, C210, C301, C304, C310, C509, C601, C603, C604, C605, C606 |
| 9 | 100kOhm | Resistor_SMD:R_0402_1005Metric | R202, R211, R302, R311, R601, R602, R603, R604, R606 |
| 6 | 5.1kOhm | Resistor_SMD:R_0402_1005Metric | R212, R213, R312, R313, R401, R402 |
| 6 | SJD12A28L01 | project:D_SOD-123S | D404, D405, D406, D407, D408, D409 |
| 6 | ~ | Capacitor_SMD:C_0402_1005Metric | C202, C205, C206, C302, C305, C306 |
| 5 | 6.8nF | Capacitor_SMD:C_0402_1005Metric | C208, C209, C308, C309, C501 |
| 5 | SS54 | Diode_SMD:D_SMA | D201, D301, D501, D502, D503 |
| 4 | 2604-1102 | project:WAGO-2604-1102 | J401, J402, J403, J404 |
| 4 | 3mR 1% | Resistor_SMD:R_1206_3216Metric | R205, R206, R305, R306 |
| 4 | 47uF | Capacitor_SMD:C_2220_5750Metric | C207, C307, C510, C511 |
| 4 | ToolingHole | project:JLCPCB tooling hole | H101, H102, H103, H104 |
| 3 | 10uF | Capacitor_SMD:C_0805_2012Metric | C502, C504, C602 |
| 3 | 1uF | Capacitor_SMD:C_0402_1005Metric | C203, C303, C505 |
| 2 | 0501010.WR1 | Fuse:Fuse_1206_3216Metric | F401, F402 |
| 2 | 1.96kOhm | Resistor_SMD:R_0402_1005Metric | R503, R605 |
| 2 | 10.2kOhm | Resistor_SMD:R_0402_1005Metric | R502, R607 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C507, C508 |
| 2 | CSD17571Q2 | project:CSD17571Q2 | Q201, Q301 |
| 2 | ESD9L3.3ST5G | Diode_SMD:D_SOD-923 | D402, D403 |
| 2 | INA2180A2IDGKR | Package_SO:VSSOP-8_3.0x3.0mm_P0.65mm | U203, U303 |
| 2 | MountingHole | project:MountingHole_5mm_Keepout | H105, H106 |
| 2 | NCV8460A | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U201, U301 |
| 2 | NetTie_2 | NetTie:NetTie-2_SMD_Pad0.5mm | NT601, NT602 |
| 2 | UCC27511DBVR | Package_TO_SOT_SMD:SOT-23-6 | U202, U302 |
| 1 | 121kOhm | Resistor_SMD:R_0402_1005Metric | R501 |
| 1 | 220pF | Capacitor_SMD:C_0402_1005Metric | C503 |
| 1 | 8.2nF | Capacitor_SMD:C_0402_1005Metric | C506 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U502 |
| 1 | ESD9X5.0ST5G | Diode_SMD:D_SOD-923 | D401 |
| 1 | ESP32-C3-WROOM-02 | PCM_Espressif:ESP32-C3-WROOM-02 | U601 |
| 1 | SDSL10D40F-3R8Y | Inductor_SMD:L_10.4x10.4_H4.8 | L501 |
| 1 | TPS54332DDAR | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U501 |
| 1 | TYPE-C-31-M-12 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | P401 |
| 1 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D601 |
It measures 52 × 80 mm and has 4 copper layers, 1.6 mm thick.
117 parts, built around the ESP32-C3-WROOM-02-H4, UCC27511DBVR(UMW), TPS54332DDAR and NCV8460AD. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the Wassasin/leddimmer repository on GitHub, at the commit this page was made from: the board is hw/leddimmer-hw.kicad_pcb and its schematic hw/connectors.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Wassasin before reusing the design.
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