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TIDA-00602

Electric Toothbrush Controller Reference Design

Design files

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
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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.

download Design guide — TIDA-00602
TIDUAZ7.PDF (2036 K)

Reference design overview and verified performance test data

download Schematic — TIDA-00602
TIDRIK7.PDF (136 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDA-00602
TIDRIK8.PDF (200 K)

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

download Assembly drawing — TIDA-00602
TIDRIK9.PDF (85 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDA-00602
TIDRIL1.ZIP (518 K)

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

download Gerber file — TIDA-00602
TIDCBC4.ZIP (312 K)

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

download PCB layout — TIDA-00602
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

DRV8850 — 7-V, 8-A H-bridge motor driver with LDO and current feedback

Data sheet: PDF | HTML
D-type flip-flops

SN74LVC1G80 — Single Positive-Edge-Triggered D-Type Flip-Flop

Data sheet: PDF | HTML
General-purpose transceivers

SN74LVC1G14 — Single 1.65-V to 5.5-V inverter with Schmitt-Trigger inputs

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430G2210 — 16-MHz MCU with 2-KB Flash, 128-B SRAM, comparator, timer

Data sheet: PDF

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Software

Technical documentation

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Type Title Date
* Design guide Electric Toothbrush Controller Design Guide 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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