TIDA-01588

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

TIDA-01588

Design files

Overview

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.

Features
  • 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

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

TIDRUO2.PDF (442 K)

Detailed schematic diagram for design layout and components

TIDRUO3.PDF (289 K)

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

TIDRUO4.PDF (103 K)

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

TIDRUO5.PDF (330 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Brushed DC (BDC) motor drivers

DRV887050-V, 3.6-A H-bridge motor driver with current regulation

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ESD122Dual 0.2-pF, ±3.6-V, ±18-kV ESD protection diode for USB Type-C and HDMI 2.0

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ESD & surge protection ICs

TVS330033V flat-Clamp surge protection device

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General-purpose op amps

TLV9061Single, 5.5-V, 10-MHz, RRIO operational amplifier for cost-optimized applications

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Linear & low-dropout (LDO) regulators

TPS709150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection and enable

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MSP430 microcontrollers

MSP430FR243316 MHz MCU with 16KB FRAM, 4KB SRAM, 10-bit ADC, UART/SPI/I2C, timer

Data sheet document-pdfAcrobat PDF open-in-new HTML

Start development

Software

Firmware

TIDA-01588_Firmware – TIDCEA0.ZIP (4459 K)

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
More literature TIDA-01588_Firmware Dec. 13, 2017

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