TIDA-00602

Electric Toothbrush Controller Reference Design

TIDA-00602

Design files

Overview

This reference design uses our low-voltage H-Bridge motor driver with an integrated low dropout (LDO) voltage regulator and an ultra-low-power microcontroller (MCU) to demonstrate a full implementation of a battery-powered electric toothbrush.

Features
  • Battery voltage ranging from 2 V to 5.5 V
  • Delivers 5-A continuous and 8-A peak-drive current
  • Small PCB form factor of 43.2 mm x 14.6 mm
  • Low-component count to reduce cost
  • Less than 50-nA battery leakage current when off

Design files & products

Design files

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

TIDUAZ7.PDF (2036 K)

Reference design overview and verified performance test data

TIDRIK7.PDF (136 K)

Detailed schematic diagram for design layout and components

TIDRIK8.PDF (200 K)

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

TIDRIK9.PDF (85 K)

Detailed overview of design layout for component placement

TIDRIL1.ZIP (518 K)

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

TIDCBC4.ZIP (312 K)

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

TIDRIL0.PDF (536 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

DRV88507-V, 8-A H-bridge motor driver with LDO and current feedback

Data sheet document-pdfAcrobat PDF open-in-new HTML
D-type flip-flops

SN74LVC1G80Single Positive-Edge-Triggered D-Type Flip-Flop

Data sheet document-pdfAcrobat PDF open-in-new HTML
Inverting buffers & drivers

SN74LVC1G14Single 1.65-V to 5.5-V inverter with Schmitt-Trigger inputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430G221016-MHz MCU with 2-KB Flash, 128-B SRAM, comparator, timer

Data sheet document-pdfAcrobat PDF

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Software

Firmware

TIDA-00602 Firmware — TIDCBC5.ZIP (41 K)

Technical documentation

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Type Title Date
* Design guide Electric Toothbrush Controller Design Guide Nov. 02, 2015
More literature TIDA-00602 Firmware Nov. 02, 2015

Related design resources

Hardware development

EVALUATION BOARD
DRV8850EVM DRV8850EVM - Evaluation Module for Low-Voltage H-Bridge Motor Driver with LDO Voltage Regulator

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