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Wireless Earbud Battery Ultra-Low Standby Power Consumption Reference Design [Copy link]

New wireless earbuds are charged from a battery inside the carrying case - This unique design requires a small solution size and efficient power components. In addition, the high volume demand in this market increases the need to provide equivalent functionality more economically. This ultra-low power reference design showcases the charging case battery and boost converter powered by a USB input.


18-μA ultra-low standby current
Supports fast charging current up to 1.5 A in charging case
Supports pass-through mode when input is higher than output
Charging efficiency is higher than 85%
Small solution size
Supports charging accuracy down to 1mA in earbuds

Design Information

Ultra-low standby power reference design for wireless earbud battery charger

Test Data

Schematic

TIDA-050007 PCB

TIDA-050007 Gerber

TIDA-050007 Assembly Drawing

TIDA-050007 CAD Files

360截图20190820161031052.jpg (34.57 KB, downloads: 0)

360截图20190820161031052.jpg
This post is from RF/Wirelessly
 

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