2 layers140 × 140 mm
2 layers124 × 70.8 mm
Power tx
redhotchili0909/LEDSphere1ENGR3430 (Eclectronics) Final Project PCB
- Size
- 124 × 70.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 93
- Nets
- 66
- Pads
- 262
- Tracks, vias
- 782, 83
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 11 Mar 2026
- Updated
- 28 Apr 2026
Overview
Power tx is an open-source printed circuit board by redhotchili0909, from the redhotchili0909/LEDSphere repository on GitHub. It is a 2-layer board of 124 × 70.8 mm with 93 parts on 66 nets, routed with 782 tracks and 83 vias.
It is built around the UCC27714DR(UMW), CH221K and SG3525, with the TPS54302, BSS138 and SI2319CDS among its other parts. Its parts include 34 resistors, 31 capacitors, 8 transistors, 5 ICs and 3 diodes.
Main components
7
UCC27714DR(UMW)
SOP-14-40℃~+125℃ 10V~20V 130ns 130ns 150uA 2 20ns 40ns 4A 4A Half-Bridge IGBT、MOSFET Under Voltage Protection SOP-14 Gate Drivers ROHSUMWGate Drivers
CH221K
SOT-23-6-40℃~+105℃ 100W 5V、9V、12V、15V、20V PD 3.0 Power Receiver Controller SOT-23-6 USB PD ROHSWCH (Nanjing Qinheng Microelectronics)USB PD
SG3525
SOP-16DIP-16 AC-DC Controllers and Regulators ROHSGcoreAC-DC Controllers & RegulatorsTPS54302
UncategorisedTexas Instruments
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETsSI2319CDS
SOT-23-55℃~+150℃ 1 P-Channel 108mΩ@4.5V 2.5V 2.5W 21nC@10V 4.4A 40V 595pF 61pF 76pF P-Channel SOT-23 MOSFETs ROHSVishay IntertechnologyMOSFETs
SS34
SMA(DO-214AC)-55℃~+125℃ 3A 40V 500uA@40V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
Parts
93| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 47k | Resistor_SMD:R_0402_1005Metric | R6, R9, R10, R13, R17, R22, R26 |
| 6 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6 |
| 5 | 100nF | Capacitor_SMD:C_0603_1608Metric | C7, C8, C17, C25, C27 |
| 5 | 1uF | Capacitor_SMD:C_0805_2012Metric | C16, C18, C20, C30, C31 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R11, R31, R32 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R7, R20, R23 |
| 3 | 5R | Resistor_SMD:R_0603_1608Metric | R29, R33, R34 |
| 3 | TestPoint | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP1, TP2, TP3 |
| 2 | 100k | Resistor_SMD:R_0402_1005Metric | R8, R19 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R18, R24 |
| 2 | 1µF | Capacitor_SMD:C_0603_1608Metric | C1, C5 |
| 2 | 220pF | Capacitor_SMD:C_0402_1005Metric | C23, C24 |
| 2 | 22µF | Capacitor_SMD:C_1210_3225Metric | C12, C14 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | 51R | Resistor_SMD:R_0603_1608Metric | R27, R28 |
| 2 | 68nF | Capacitor_SMD:C_0603_1608Metric | C28, C29 |
| 2 | SW_Push | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | SW1, SW2 |
| 2 | Si2319CDS | Package_TO_SOT_SMD:SOT-23 | Q7, Q8 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_1.0x1.0mm | TP4, TP5 |
| 1 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C26 |
| 1 | 100R | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 100nF | Capacitor_SMD:C_0402_1005Metric | C2 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric | C13 |
| 1 | 10µ, 50V | Capacitor_SMD:C_1206_3216Metric | C22 |
| 1 | 10µF | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | 10µF, 50V | Capacitor_SMD:C_1206_3216Metric | C6 |
| 1 | 10µH | Inductor_SMD:L_Vishay_IHLP-3232 | L1 |
| 1 | 15k | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | 1nF | Capacitor_SMD:C_0402_1005Metric | C3 |
| 1 | 1uF | Capacitor_SMD:C_1206_3216Metric | C19 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C15 |
| 1 | 2.2R | Resistor_SMD:R_0603_1608Metric | R30 |
| 1 | 20k | Resistor_SMD:R_0402_1005Metric | R15 |
| 1 | 22R | Resistor_SMD:R_0402_1005Metric | R25 |
| 1 | 22k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 22pF | Capacitor_SMD:C_0603_1608Metric | C9 |
| 1 | 30k | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | 4017 | Package_SO:STC_SOP-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | 47pF | Capacitor_SMD:C_0603_1608Metric | C10 |
| 1 | 49.9 | Resistor_SMD:R_0402_1005Metric | R21 |
| 1 | 4k7 | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 5.8 uH | Footprints:power_coil | L2 |
| 1 | 56k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | CH221K | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | D | Diode_SMD:D_SMA | D3 |
| 1 | FRQ_ADJ (20K) | Footprints:TRIM_3362P-1-203LF | RV1 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | Motor_DC | Footprints:motor | M1 |
| 1 | SG3525 | Footprints:SO-16N_STM | U4 |
| 1 | SS34 | Diode_SMD:D_SMA | D2 |
| 1 | TPS54302 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | UCC27714DR | Footprints:SOIC127P600X175-14N | U8 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
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Questions
How big is the Power tx PCB?
It measures 124 × 70.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Power tx use?
93 parts, built around the UCC27714DR(UMW), CH221K, SG3525 and TPS54302. 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.
Where can I download the Power tx KiCad files?
From the redhotchili0909/LEDSphere repository on GitHub, at the commit this page was made from: the board is LEDSphere/power_tx.kicad_pcb and its schematic LEDSphere/LEDSphere.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Power tx design in my own project?
Its repository states no licence, so its author keeps all rights: ask redhotchili0909 before reusing the design.