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wireless charging electric toothbrush

Overview

Electric toothbrush charging control circuit:

The charging control circuit is mainly composed of electromagnetic induction secondary coil, full-bridge rectifier diode and transistor switch control circuit.
There are hundreds to thousands of toothbrushes on the market, all with whitening, protection and other functions, but do you know how these modes are implemented? How does the program distinguish which mode? The detailed instructions in the attachment will reveal the secrets of electric toothbrush technology to you.
The main components of this wireless charging electric toothbrush include:
R7F0C807: Renesas R7 series MCU master control
FST1822: Boost switched capacitor converter
24AA04: 4Kb I2C serial EEPROM
TSM6963SD: 20V dual P-channel MOSFET

Design Files

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Update:2025-06-14 06:45:10

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