10.8-V/15-W, >90% Efficiency, 2.4-cm2, Power Stage Reference Design for Brushed DC Servo Drive


Design files


This 15W, 12-mm x 20-mm, power stage reference design drives and controls the position of the brushed DC (BDC) motor operating from a three to six cell Li-ion battery. This highly efficient solution is optimized with a very small form factor that easily fits into the motor, and supports precise motor position control. The design is also capable of driving the motor at high speed without any position feedback. The reference design demonstrates fast and accurate current sensing for quality torque control, and the onboard MCU provides UART connectivity, which enables controllability with any external controller.

  • Brushed DC servo drive operates at voltage ranging from 6.5-V to 25.2-V (3 to 6 cell Li-ion battery)
  • Supports 1.4 -ARMS continuous, 2.5-A peak motor winding current, with over current and shoot-through protection 
  • Precise motor position control with encoder or potentiometric position feedback 
  • Very small PCB form factor of 12mm x 20mm, with >90 % power stage efficiency
  • Current sensing with < 1% calibrated accuracy error, enable accurate torque control
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUDT6.PDF (4756 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDRUO6.ZIP (1032 K)

Files used for 3D models or 2D drawings of IC components

TIDCE99.ZIP (501 K)

Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Technical documentation

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Type Title Date
* Design guide 10.8-V/15-W, >90% Efficiency, 2.4-cm², Power Stage Ref Des for BDC Servo Drive Dec. 13, 2017

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