Wireless Earbuds

Solution Proposal

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

Name

Overall block diagram

Overall block diagram example

Sub block diagram

Power supply lines (Load switch) for earphones case
Example of power supply circuit using MOSFET
Application / Wireless Earbuds
Details
Battery management for earphones case
Example of power supply monitoring circuit for battery charging and discharging system
Application / Wireless Earbuds
Details
External connector for earphones case
Protection circuit example of external connector part
Application / Wireless Earbuds
Details
Battery management for earphones
Example of power supply monitoring circuit for battery charging and discharging system
Application / Wireless Earbuds
Details
Power supply circuit for earphones
Example of power supply circuit using LDO Regulator
Application / Wireless Earbuds
Details
Circuit protection for earphones
Protection circuit example of internal IC
Application / Wireless Earbuds
Details

Documents

Name Date

Reference Design

PCB photo example of Power multiplexer circuit
Power multiplexer circuit
In this reference design, a Power multiplexer circuit with 2 input and 1 output is implemented on a small PCB. MOSFET gate driver ICs, eFuse ICs, zener diodes and small package MOSFETs selected from Toshiba's diverse lineup are used create ideal diode like characteristics with BBM and MBB switching.
Power multiplexer circuit / 2 input and 1 output
Details
Photo of non-isolated buck DC-DC converter.
Non-Isolated Buck DC-DC Converter
This reference design provides design guide, data and other contents of multiple non-isolated buck DC-DC converter power supplies. Multiple variations of the power supply are optimized for various outputs, loads and board mounting areas.
Reference Design Center
Details
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.
LDO Regulator / TCR3UG
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.
LDORegulator / TCR15AG
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.
LDO Regulator / Design / Support / Reference Design Center
Details

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Simulation Model , 2D/3D data

Simulation Model
Simulation Model
2D/3D data
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