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Discrete MOSFET H-Bridge

baleshwarece-jpg·PCB_PROJECTS·DAY20-MOSFET_H_BRIDGE-MOTOR-DRIVER/Discrete MOSFET H-Bridge.kicad_pcb

Discrete MOSFET H-Bridge PCB layout, top view — open source board by baleshwarece-jpg

About the Discrete MOSFET H-Bridge PCB

Discrete MOSFET H-Bridge is an open source PCB design by baleshwarece-jpg, published on GitHub. It is a 2-layer board measuring 51 × 27 mm, with 11 components from 5 distinct parts.

By type, the board carries 4 modules, 4 resistors and 3 connectors.

It belongs with the robotics & motion designs in this gallery.

From the project

30-Days-PCB-Design-Challenge

A discrete N-channel MOSFET H-bridge for bidirectional DC motor control, built without an integrated driver IC. Uses a high-side/low-side gate driver pair to switch four power MOSFETs, supporting motor currents up to 10A continuous with PWM speed control.

Most low-power motor driver boards use an integrated IC (DRV8871, L298N, TB6612FNG) because it bundles gate drive, shoot-through protection, and current sensing into a single package. Building the H-bridge from discrete MOSFETs removes that ceiling — at the cost of having to solve the same problems the IC normally hides: high-side gate…

Discrete MOSFET H-Bridge, from the project README
From the project README

Discrete MOSFET H-Bridge bill of materials (BOM)

11 components, 5 distinct parts.

QtyPartRefs
4
IRF9540N
M1, M2, M3, M4
1
Conn_01x02_Pin
J1
1
Conn_01x03_Pin
J2
1
Conn_01x02_Pin
J3
4
R
R1, R2, R3, R4

Discrete MOSFET H-Bridge design files

The KiCad project lives in the baleshwarece-jpg/PCB_PROJECTS repository on GitHub; these links point at the commit this page was built from.

Discrete MOSFET H-Bridge: common questions

How big is the Discrete MOSFET H-Bridge PCB?

The Discrete MOSFET H-Bridge measures 51 × 27 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Discrete MOSFET H-Bridge?

11 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Discrete MOSFET H-Bridge design files?

From the baleshwarece-jpg/PCB_PROJECTS repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Discrete MOSFET H-Bridge design in my own project?

The repository has no license, so all rights stay with baleshwarece-jpg. Use it as a reference, and ask the author before reusing the design.

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