2 layers117.1 × 77.2 mm
2 layers40.8 × 44.4 mm
PWM Converter
farzadh/porsche_evRepository for all firmware/software developments related to PORSCHE EV conversion
- Size
- 40.8 × 44.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 21
- Pads
- 74
- Tracks, vias
- 142, 8
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 22 Nov 2024
- Updated
- 24 Jul 2025
Overview
PWM Converter is an open-source printed circuit board by farzadh, from the farzadh/porsche_ev repository on GitHub. It is a 2-layer board of 40.8 × 44.4 mm with 29 parts on 21 nets, routed with 142 tracks and 8 vias.
It is built around the MCP6021T-E/OT-MS and NE556DRG. Its parts include 2 capacitors and 2 ICs.
Main components
2
MCP6021T-E/OT-MS
SOT-23-5-2.75V~-1.1V、1.1V~2.75V -40℃~+85℃ 1 10V/us 11MHz 2.2V~5.5V 20mA 300uA 30pA 400pA 600nV/℃ 60nV/√Hz@1kHz 800uV 95dB Rail-to-Rail Input, Rail-to-Rail Output SOT-23-5 Operational Amplifier ROHSMSKSEMIOperational Amplifier
NE556DRG
SOP-140℃~+70℃ 2 200mA 4.5V~16V 5mA SOP-14 555 Timers / Counters ROHSHANSCHIP semiconductorTimers / Counters
README
README.mdporsche_ev
Repository for all firmware/software developments related to PORSCHE EV conversion
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | TestPoint_Probe | TestPoint:TestPoint_Pad_1.5x1.5mm | TP1, TP2, TP3, TP4 |
| 3 | R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R_filter1, Rpar1, Rser1 |
| 3 | SolderJumper_2_Open | Custom:SolderJumper2_Open | Pullup1, Vc_Buf1, Vc1 |
| 2 | 220nF | Capacitor_SMD:C_0805_2012Metric | C_T1, C_T2 |
| 2 | 22uF | Capacitor_SMD:C_1206_3216Metric | C_filter1, C_RST1 |
| 2 | Conn_01x02_Socket | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | POT_IN1, POT_OUT1 |
| 1 | 10K | easyeda2kicad:RES-ARRAY-TH_601030 | POT_PW1 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R_A1 |
| 1 | 10nF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 150K | easyeda2kicad:RES-ARRAY-TH_601030 | PERIOD1 |
| 1 | 150k | Resistor_SMD:R_0805_2012Metric | R_RST1 |
| 1 | 1K5 | Resistor_SMD:R_0805_2012Metric | R_B1 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric | R_IN1 |
| 1 | 330uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C2 |
| 1 | Conn_01x03_Pin_2.54mm | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal | SERVO_OUT1 |
| 1 | Conn_01x03_Socket | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | BMS_IN1 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | LM7805 |
| 1 | MCP6021T-E/OT | easyeda2kicad:SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR | U3 |
| 1 | NE556DR | easyeda2kicad:SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL | U1 |
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Questions
How big is the PWM Converter PCB?
It measures 40.8 × 44.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PWM Converter use?
29 parts, built around the MCP6021T-E/OT-MS and NE556DRG. 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 PWM Converter KiCad files?
From the farzadh/porsche_ev repository on GitHub, at the commit this page was made from: the board is fuel_gauge_handler/PWM_Converter/PWM_Converter.kicad_pcb and its schematic fuel_gauge_handler/PWM_Converter/PWM_Converter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PWM Converter design in my own project?
Its repository states no licence, so its author keeps all rights: ask farzadh before reusing the design.