应用与设计

Electric Toothbrush

详情介绍

Electric Toothbrush

Overview

Electric toothbrushes use a motor to vibrate and rotate the brush, and have the advantage of allowing you to brush your teeth thoroughly in a short amount of time. In addition, a variety of products have also appeared in response to increased interest in oral care and health.

Recently, electric toothbrushes with advanced dental plaque removing capability utilizing ions, or functions such as monitoring by wireless communication and guiding to places to brush, or detecting the load on the motor and automatically adjusting the rate of the brush, are attracting attention.

Renesas offers the RL78 Families and R8C Families and others as system control microcontrollers and LCD display microcontrollers for satisfying the needs of complex systems such as fine motor control, battery control, LCD display, and RF communication. Single-chip battery control ICs, MOSFETs, power control ICs, and so on are also available for meeting the demands for high functionality, high performance, low power consumption, and reduced costs.

System Block Diagram

Recommended Products

Block Semiconductor device Recommended products Features, etc.
Control MCU MCU R8C/3x Series Timers, 5 V operation, small package
RL78/G13 Timers, 5 V operation, small package
RL78/G1G Timers, 5 V operation, small package
Battery control MCU MCU R8C/3x Series General Purpose 16-bit MCU
RL78/G13 I 2 C bus interface *1
RL78/L13 LCD controller
Charger MCU MCU R8C/3x Series General Purpose 16-bit MCU
RL78/G13 I 2 C bus interface *1
RL78/G1G Timers, 5 V operation, small package
RF communication MCU MCU R8C/3MQ SPI bus interface *2
Sensor output Op-amp
Comparator
HA1630 Series General-purpose CMOS op-amp, comparator
low power consumption
HA1631 Series
UPC358MF, UPC393MF 8-pin SOP package for consumer applications,
low power consumption
Valves TRIAC BCR12PM-12LG Guaranteed maximum junction temperature
of 150°C
Main motor TRIAC BCR8PM-12LG
BCR8PM-14LG
BCR10PM-12LG
Guaranteed maximum junction temperature
of 150°C
Lid lock TRIAC BCR1AM-12A Up to 80W/AC200V-220V
Inverter IGBT RJH60D Series  
Photocoupler (IGBT drive) PS93xx Series
(6/8p-SDIP)
PS94xx Series
(16p-SOP)
PS95xx Series
(8p-DIP)
PS99xx Series
(8p-LSDIP)
High isolation voltage (5kV~7.5kVr.m.s.)
0.6~2.5A output
High CMR (CMR≧50kV/μs)
TRIAC control Photocoupler (standard) PS23xx Series
PS27xx Series
PS28xx Series
High isolation voltage (5kVr.m.s.), 4p-LSOP, Ta=115°C
High isolation voltage (3.75kVr.m.s.), 4p-SOP, Ta=110°C
High isolation voltage (2.5kVr.m.s.), 4p-SSOP, Ta=110°C

*1 I 2 C : Inter-Integrated Circuit
*2 SPI : Serial Peripheral Interface
*3 PWM : Pulse Width Modulation