PMP11311 Reference Design

Texas Instruments

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

Description

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.

Features
  • Wireless charging for ease of useConfigurable charger and system power managementBoosts for display and heart rate monitorSecond buck for radio or dual core MCU
Applications
  • 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

Parts

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

Software

Bill Of Materials

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Schematic

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Download the schematic for PMP11311

Test Data

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Download the test file for PMP11311

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