PCB Design Considerations for Wearable Devices

Practical guide to wearable PCBs covering substrate choices (FR4 vs Rogers), manufacturing tolerance, RF design, and RF transmission lines like microstrip and coplanar waveguide

Wireless Li-Ion Charger with Integrated DC/DC for Wearables

Technical overview of the LTC4126 wireless charger receiver for wearables, detailing inductance-free DC-DC charge-pump, CC/CV charger, safety features, and ZVS transmitter pairing.

Technologies Used in Wearable Device Design

Technical overview of capacitive sensing for wearables: low-power touch and proximity design, wear detection, gesture touchpads, robustness, signal processing, and cost trade-offs.

Extending Wearable Battery Life Through Charging Control

Overview of how battery capacity, leakage current and termination current affect runtime in low-power wearables, with charger IC recommendations.

Wearables in the Wireless Charging Market

Overview of wireless charging technology and market adoption across wearables, automotive and mobile devices, highlighting receivers, transmitters and coils.

Multi-Rail DC/DC Converters for Wearable Devices

Overview of TI's TPS62770 multi-rail buck and boost DC/DC converter for wearables, highlighting low quiescent current, display/LED driving for PMOLED and LCD backlights.

Selecting Accurate Fuel Gauges for Wearable Devices

Technical overview of HG-CVR smart fuel gauge (LC70920XF/LC709203F) using internal-resistance and voltage tracking to estimate RSOC with ±2.8% accuracy, low power.

Heart Rate and SpO2 Measurement for Wearable Devices

Technical overview of pulse oximetry: principles, SpO2 measurement, transmission vs reflection methods, signal conditioning and digital filtering for device design.

Wearable Device Circuit Protection Design

Overview of ESD protection and PCB layout for wearables, and UAV long-term tracking algorithm with altitude control for aerial robotics.

Power Management Challenges in Wearable Devices

Power management strategies for wearables: PMIC, SIMO and LDO selection, battery capacity trade-offs and low?power design techniques to extend battery life.