PMP11311 Reference Design

Texas Instruments

Power Reference Design for a Wearable Device with Wireless Charging using the bq51003 and bq25120


Wearable devices require advanced power management to achieve long battery run times with always-on functionality.  Additionally: the devices need to use small rechargeable batteries and enable small footprint designs.  This application note shows the implementation of a scalable power management solution for wearables that can be tailored for activity monitors or smart watches. The design provides a wireless charging input: highly configurable battery management solution with Li-Ion battery charger and low quiescent current (Iq) DC/DC buck: boost converter for PMOLED display: boost converter for Heart Rate Monitor (HRM): and second configurable low Iq DC/DC buck.

  • Wireless charging for ease of useConfigurable charger and system power managementBoosts for display and heart rate monitorSecond buck for radio or dual core MCU
  • Pulse oximeter
  • In vitro diagnostics
  • Electrocardiogram (ECG)
  • Endoscope
  • CPAP machine
  • Multiparameter patient monitor
  • Anesthesia delivery systems
  • Sleep diagnostics
  • Hearing aid
  • Electronic thermometer
  • Blood glucose monitor
  • Wearable fitness & activity monitor
  • Augmented reality glasses
  • Smartwatch
  • Beauty & grooming
  • Appliances: battery charger
  • Eye
  • ear
  • nose & throat exam
  • Electric toothbrush
  • Smart trackers
  • Clinical digital thermometer
  • Medical sensor patches
  • Digital stethoscope
  • Blood pressure monitor
Product Categories
  • Power management


Part Number Name Companion Part
BQ51003 BQ51003 Buy Datasheet
TPS61240 TPS61240 Buy Datasheet


Bill Of Materials

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Download the schematic for PMP11311

Test Data

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Other Documents

Title Updated Type Size (KB)
PMP11311 Altium 04 Dec 2015 ZIP 8502
PMP11311 BOM 04 Dec 2015 PDF 114
PMP11311 Schematic 04 Dec 2015 PDF 567