6 layers148 × 121 mm
4 layers27 × 18 mm
Powermod
Slenderman00/powermod-lt8645spowermod-tps54202 is a simple DC-DC regulator board developed by Lightside Instruments AS.
- Size
- 27 × 18 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 16
- Pads
- 85
- Tracks, vias
- 96, 52
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 8 Oct 2025
- Updated
- 8 Oct 2025
Overview
Powermod is an open-source printed circuit board by Slenderman00, from the Slenderman00/powermod-lt8645s repository on GitHub. It is a 4-layer board of 27 × 18 mm with 21 parts on 16 nets, routed with 96 tracks and 52 vias.
It is built around the TPS54260DGQ and B360. Its parts include 8 capacitors, 7 resistors, 2 connectors, 1 IC and 1 diode.
Main components
2
TPS54260DGQ
HVSSOP-10-EP-0.5mm-40℃~+150℃@(TJ) 1 138uA 2.5A 2.5MHz 3.5V~60V 800mV~60V Adjustable Buck Buck Built-in No HVSSOP-10-EP-0.5mm DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
B360
SMC(DO-214AB)-55℃~+150℃ 1 Independent 100A 3A 500uA@60V 60V 700mV@3A SMC(DO-214AB) Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes
README
READMEpowermod-tps54202 is a simple DC-DC regulator board developed by Lightside Instruments AS.
The project includes schematic and PCB design files for KiCAD.
The project is published by Lightside Instruments AS under TAPR Open Hardware License. Read the LICENSE file for details.
==Calculating the EN pin resistor pair== According to the tps54202h.pdf (SLVSDG7A – APRIL 2016 – REVISED APRIL 2021) there is a formula for calculating the resistor pair to be used for driving the EN pin:
Here is a matlab script for calculating the values:
v_en_rising=1.28 v_en_falling=1.25 rpd=1000000 ih=1/1000000 v_start=3.1 v_stop=v_start-0.48 r4=((v_en_falling/v_en_rising)v_start-3)/ih r5=r4rpd/((v_start/v_en_rising-1)*rpd-r4)
You can also set r4=10000 ohm and find the coresponding r5 e.g. ~7K
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 4.7uF | Capacitor_SMD:C_1210_3225Metric | C1, C4 |
| 2 | 47uF | Capacitor_SMD:C_0805_2012Metric | C2, C5 |
| 2 | Conn_02x07_Odd_Even | Connector_PinHeader_2.00mm:PinHeader_2x07_P2.00mm_Vertical_SMD | J1, J2 |
| 1 | 0 | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 0.025uF | Capacitor_SMD:C_0402_1005Metric | C7 |
| 1 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C3 |
| 1 | 11K | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 14pF | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 15uH | Inductor_SMD:L_Taiyo-Yuden_MD-5050 | L1 |
| 1 | 240K | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 332K | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 51.1nF | Capacitor_SMD:C_0402_1005Metric | C8 |
| 1 | 52K | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 56.2K | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 9K | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | B360 | Diode_SMD:D_SMC | D1 |
| 1 | G*** | spark:lsi-logo-16mm | svg2mod |
| 1 | TPS54260DGQ | Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP2.2x3.1mm_Mask1.83x1.89mm_ThermalVias | U1 |
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Questions
How big is the Powermod PCB?
It measures 27 × 18 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Powermod use?
21 parts, built around the TPS54260DGQ and B360. 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 Powermod KiCad files?
From the Slenderman00/powermod-lt8645s repository on GitHub, at the commit this page was made from: the board is powermod.kicad_pcb and its schematic powermod.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Powermod design in my own project?
Its repository states no licence, so its author keeps all rights: ask Slenderman00 before reusing the design.