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Reference Assembly

Brushed DC Motor Driver Stage

This page documents Brushed DC Motor Driver Stage, a 6-block reference design. An H-bridge driver stage that controls speed and direction of a brushed DC motor under MCU command. It is a common building block in robotics drivetrains.

Assembly specifications

Motor voltage6-36 V
Continuous current5 A
ControlPWM
Protectionovercurrent + flyback

Bill of materials

BlockQtyComponent familyRepresentative spec
H-bridge / gate driver 1 Analog & Power ICs Integrated bridge or discrete-driver IC
Power MOSFETs 4 Discrete Semiconductors N-channel, low Rds(on), 60 V
Bulk capacitors 2 Passive Components Electrolytic + MLCC on the motor rail
Current-sense resistor 1 Passive Components Low-ohm shunt for current limit
Flyback protection 1 Discrete Semiconductors TVS / Schottky across the bridge
Connector 2 Connectors & Interconnects Screw or blade terminal for motor leads

Selecting parts

Start from the headline parameters, then size each block: the regulator or controller sets the operating point, passives are chosen for ripple and stability, and protection is rated above worst-case stress. Use the linked categories to compare options.

How the assembly works

Each block in Brushed DC Motor Driver Stage maps to a catalog component family, so the design can be quoted and sourced as one package. The bill of materials below lists the role each part plays and a representative specification.

Sourcing the build

Because every block is a stocked catalog family, the whole assembly can be quoted together with consolidated lead times. Request a quote with your target volume and we will return availability across all blocks.

Build sequence

  1. Verify the supply rail and reference ground at the board edge first.
  2. Place and verify the h-bridge / gate driver (Integrated bridge or discrete-driver IC).
  3. Place and verify the power mosfets (N-channel, low Rds(on), 60 V).
  4. Place and verify the bulk capacitors (Electrolytic + MLCC on the motor rail).
  5. Place and verify the current-sense resistor (Low-ohm shunt for current limit).
  6. Place and verify the flyback protection (TVS / Schottky across the bridge).
  7. Place and verify the connector (Screw or blade terminal for motor leads).
  8. Energize gradually, measure against the parameter table, and qualify at rated load.

Frequently asked questions

Can I source the whole Brushed DC Motor Driver Stage from one supplier?
Yes. Every block maps to a stocked catalog category, so the assembly can be quoted and shipped as a single consolidated order.
Can blocks be substituted?
Yes, within the same component family. Each block links to its catalog category so substitutions keep the right package, rating, and compliance.
Do you provide a quote for the full bill of materials?
Send your target volume and we will return availability and volume pricing across every block in the assembly.
What is Brushed DC Motor Driver Stage used for?
It is commonly used in robotics drivetrains, automated guided vehicles, powered actuators. Share your requirements and we can adapt the block selection.
What is the Motor voltage of Brushed DC Motor Driver Stage?
The assembly targets a Motor voltage of 6-36 V; the full parameter set is listed in the specifications table above.

References