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Wearable device power supply reference design for wireless charging using bq51003 and bq25120

PMP11311

Overview

Wearable devices require advanced power management to keep batteries running for extended periods of time while enabling always-on functionality. In addition, the device needs to use small rechargeable batteries and support a small form factor design. This application note shows how to implement a scalable power management solution for wearable devices that can be customized for activity monitors or smart watches. This design features a Li-ion battery charger and low quiescent current (Iq) DC/DC buck and boost converters for PMOLED displays, a boost converter for heart rate monitors (HRM) and a second Configured with low Iq DC/DC buck, it provides wireless charging input and highly configurable battery management solution.

characteristic

● Easy-to-use wireless charging
● Configurable charger and system power management
● Boost for displays and heart rate monitors
● Second buck for radio or dual-core MCU

Backlog Impt notice changes Backlog Impt notice changes end

Blockdiagram

Design Files

Documentation

Power Management Reference Design for a Wearable Device with Wireless Charging

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Update:2025-06-24 02:54:41

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