Wireless Earbud Battery Ultra-Low Standby Power Consumption Reference Design
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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
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