10.8-V/15-W, >90% Efficiency, 2.4-cm2, Power Stage Reference Design for Brushed DC Servo Drive TIDA-01588 (ACTIVE)

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Key Document

Description

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

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Design Files

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TI Devices (6)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DRV8870  3.6A Brushed DC Motor Driver (PWM Ctrl)  Motor drivers  Sample & Buy View Design Kits & Evaluation Modules
ESD122  2-Channel ESD Protection Diode for USB Type-C and HDMI 2.0  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR2433  16 MHz Ultra-Low-Power Microcontroller with 16 KB FRAM, 4 KB RAM, 10-bit ADC, 19 IO, 4 16-bit Timers  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TLV9061  World's Smallest Amp 10MHz, RRIO, 1.8V-5.5V op-amp delivers high performance for challenging systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS709  150-mA 30-V ultra-low-Iq wide-input low-dropout (LDO) regulator with reverse current protection  Power management  Sample & Buy View Design Kits & Evaluation Modules
TVS3300  33V Flat-Clamp Surge Protection Device  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
DRV8870 Download Download
ESD122 Download -
MSP430FR2433 Download Download
Download -
TLV9061 Download
Download Download
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TPS709 Download
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TVS3300 Download

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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 4756 13 Dec 2017
Design files (6)
Title Type Size (KB) Date
ZIP 501 13 Dec 2017
ZIP 1032 13 Dec 2017
PDF 330 13 Dec 2017
PDF 103 13 Dec 2017
PDF 289 13 Dec 2017
PDF 442 13 Dec 2017
Related Tools & Software

Software (1)



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