Electric Toothbrush

Electric Toothbrush

Such as low power consumption and miniaturization are important in designing electric toothbrush. Toshiba provides information on a wide range of semiconductor products suitable for power supply/power supply management units, motor control units, sensor signal input unit, etc., along with circuit configuration examples.

Overall block diagram

Click the area you want to check the details in the overall block diagram. Show links to our proposed sub-block diagram.

 Current sensor circuit SBD SBD MOSFET MOSFET 100 V AC ＋100 V AC 3.0 V / 200 mA ＋3.0 V /200 mA Wireless Charger Feed-side WirelessChargerFeed-side Charging IC Charging IC Battery Battery LDO LDO MCU MCU Power Switch Power Switch Mode Selection Switch Mode Selection Switch Bluetooth® SoC Bluetooth® SoC Status LEDs Status LEDs Wireless Charger Feed-side WirelessChargerFeed-side M M MOSFET MOSFET MOSFET MOSFET MOSFET MOSFET Current Sensor Current Sensor Wireless power supply receiving unit rectifying circuit Battery management Power supply circuit LED driver Motor control unit
Motor control unit

Example of motor control circuit for head vibration (1)

Example of motor control circuit for head vibration (2)

LED driver

Example of LED driving circuit for operation status display

Wireless power supply receiving unit rectifying circuit

Example of rectifier circuit for wireless power supply

Power supply circuit

Example of power supply circuit in a battery powered system

Current sensor circuit

Example of current sensor circuit for safety operation

Battery management

Example of power supply monitoring circuit for battery charging and discharging system

Sub block diagram

Motor control unit
Motor control unit (1)

Example of motor control circuit for head vibration (1)

Example of motor control circuit for head vibration (1)
Small-signal MOSFET
Part Number
SSM6N951L
SSM3J338R
SSM3K324R
SSM3K35AMFV
Toshiba Package Name TCSP6A-172101 SOT-23F SOT-23F SOT-723 (VESM)
VDSS (Max) [V]   -12 30 20
ID (Max) [A]   -6.0 4.0 0.25
RDS(ON) (Max) [Ω] @ |VGS| = 4.5 [V]   0.0202 0.056 1.1
Polarity N-ch×2 P-ch N-ch N-ch
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Schottky barrier diode
Part Number
CUHS20F30
CUHS20F40
Toshiba Package Name SOD-323HE (US2H) SOD-323HE (US2H)
VRRM (Max) [V]    
VR (Max) [V] 30 40
CT (Typ.) [pF] 380 300
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Motor control unit (2)

Example of motor control circuit for head vibration (2)

Example of motor control circuit for head vibration (2)
Small-signal MOSFET
Part Number
SSM6N951L
SSM3J338R
SSM3K324R
SSM3K35AMFV
Toshiba Package Name TCSP6A-172101 SOT-23F SOT-23F SOT-723 (VESM)
VDSS (Max) [V]   -12 30 20
ID (Max) [A]   -6.0 4.0 0.25
RDS(ON) (Max) [Ω] @ |VGS| = 4.5 [V]   0.0202 0.056 1.1
Polarity N-ch×2 P-ch N-ch N-ch
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LED driver
LED driver

Example of LED driving circuit for operation status display

Example of LED driving circuit for operation status display
Bipolar transistor(1)
Part Number
2SC2712
TBC847
2SA1162
TBC857
Toshiba Package Name SOT-346 (S-Mini) SOT-23 (SOT23) SOT-346 (S-Mini) SOT-23 (SOT23)
VCEO (Max) [V] 50 50 -50 -50
IC (Max) [A] 0.15 0.15 -0.15 -0.15
Polarity NPN NPN PNP PNP
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Bipolar transistor(2)
Part Number
HN1B01FU
Toshiba Package Name SOT-363 (US6)
VCEO (Q1) (Max) [V] -50
VCEO (Q2) (Max) [V] 50
IC (Q1) (Max) [A] -0.15
IC (Q2) (Max) [A] 0.15
Polarity (Q1) PNP
Polarity (Q2) NPN
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Wireless power supply receiving unit rectifying circuit
Wireless power supply receiving unit rectifying circuit

Example of rectifier circuit for wireless power supply

Example of rectifier circuit for wireless power supply
Schottky barrier diode
Part Number
CUHS20F30
CUHS20F40
Toshiba Package Name SOD-323HE (US2H) SOD-323HE (US2H)
VRRM (Max) [V]    
VR (Max) [V] 30 40
CT (Typ.) [pF] 380 300
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Power supply circuit
Power supply circuit

Example of power supply circuit in a battery powered system

Example of power supply circuit in a battery powered system
Small surface mount LDO regulator(1)
Part Number
TCR15AG Series
TCR13AG Series
TCR8BM Series
TCR5BM Series
Toshiba Package Name WCSP6F WCSP6F DFN5B DFN5B
IOUT (Max) [mA] 1500 1300 800 500
VOUT [V] 0.6 to 3.6 0.55 to 3.6 0.8 to 3.6 0.8 to 3.6
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Small surface mount LDO regulator(2)
Part Number
TCR5RG Series
TCR3RM Series
TCR3U Series
TCR2L Series
TAR5 Series
Toshiba Package Name WCSP4F DFN4F WCSP4F SOT-553 (ESV) SOT-25 (SMV)
IOUT (Max) [mA] 500 300 300 200 200
VOUT [V] 0.9 to 5.0 0.9 to 4.5 0.8 to 5.0 0.8 to 3.6 1.5 to 5.0
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Current sensor circuit
Current sensor circuit

Example of current sensor circuit for safety operation

Example of current sensor circuit for safety operation
Low current consumption op-amp / Low noise op-amp
Part Number
TC75S102F
TC75S103F
TC75S67TU
Toshiba Package Name SOT-25 (SMV) SOT-25 (SMV) SOT-353F (UFV)
VCC (Max) [V] 5.5 5.5 5.5
VCC, VEE (Max) [V] +/-2.75 +/-2.75 +/-2.75
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Battery management
Battery management

Example of power supply monitoring circuit for battery charging and discharging system

Example of power supply monitoring circuit for battery charging and discharging system
Small-signal MOSFET
Part Number
SSM6N951L
SSM3J338R
SSM3K324R
SSM3K35AMFV
Toshiba Package Name TCSP6A-172101 SOT-23F SOT-23F SOT-723 (VESM)
VDSS (Max) [V]   -12 30 20
ID (Max) [A]   -6.0 4.0 0.25
RDS(ON) (Max) [Ω] @ |VGS| = 4.5 [V]   0.0202 0.056 1.1
Polarity N-ch×2 P-ch N-ch N-ch
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Solution Proposal

These documents explain the key points of recommended semiconductor products and their features. Please use them for product selection.

Solution Proposal
SolutionProposal_Electoric Toothbrush / English (PDF:845KB)
SolutionProposal_Electoric Toothbrush / Japanese (PDF:1.2MB)

Reference Design

Power supply circuit example of LDO regulator TCR3UG series application for power supply of IoT devices.
LDO Regulator TCR3UG Series Application for Power Supply of IoT Devices
This reference design provides document with low consumption current, PSRR, and dynamic response.The LDO has small package, low consumed power, and fast load transient response.
Details
Power supply circuit example of LDO regulator TCR15AG (fixed output voltage type) application & circuit.
LDO Regulator TCR15AG (fixed output voltage type) Application & Circuit
This reference design provides document with PSRR, dynamic response and controlling output voltage.The LDO has very small package and fixed output voltage for consumer application.
Details
Power supply circuit example of LDO regulator TCR15AGADJ application & circuit.
LDO Regulator TCR15AGADJ Application & Circuit
This reference design provides document with PSRR, dynamic response and controlling output voltage. The LDO has very small package and adjustable output for consumer application.
Details

Documents

Please see the following pages for other documents.

Video

Design & Development

Switched Mode Power Supply Library

you can select and download various basic topologies of a power supply unit based on your actual requirements in order to verify the behavior of MOSFETs with your simulation environment.

Switched Mode Power Supply Library
Motor Control and Driver Circuit Library

you can select and download various basic topologies of motor driver such as three-phase inverter circuit based on your actual requirements in order to verify the behavior of MOSFETs and another devices for your simulation environment.

Motor Control and Driver Circuit Library
Online Circuit Simulator

This service allows users to easily perform pre-verification of MOSFETs without the need to build a simulation environment.

Online Circuit Simulator
EDA/CAD Model Library

We provide simulation data, 3D models of packages, and land pattern models (2D models) used when developing product boards.

EDA/CAD Model Library
MCU Motor Studio

MCU Motor Studio features a PC Tool and motor control firmware dedicated to the TXZ+TM Family Advanced Class microcontrollers from Toshiba.

MCU Motor Studio
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FAQs
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