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TIDA-00318

Qi (WPC) Compliant Wireless Charger for Low Power Wearable Applications

Design files

TIDA-00318

Design files

Overview

This reference design is suitable for low power wearable devices including a Qi-compliant wireless receiver (bq51003) and ultra-low current 1-cell Li-ion linear charger (bq25100). It features an ultra-small size (5 x 15 mm2), capable of low-charging currents down to 10 mA and up to 250 mA with support of termination currents as low as 1 mA.  This design is for 135-mA charge current applications.

Features
  • Small size: 5 x 15 (mm2)
  • Adjustable charging current: 10 ~ 250 (mA)
  • Supports 1-mA charge termination currents
  • <75-nA battery-leakage current
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Design files & products

Design files

Download ready-to-use system files to speed your design process.

download Test report — TIDA-00318
TIDU509.PDF (1231 KB)

Test results for the reference design, including efficiency graphs, test prerequisites and more

download Assembly drawing — TIDA-00318
TIDRAA5.PDF (238 KB)

Detailed overview of design layout for component placement

download Assembly drawing — TIDA-00318
TIDRAA6.PDF (30 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-00318
TIDRAA4.PDF (199 KB)

Complete listing of design components, reference designators, and manufacturers/part numbers

download CAD/CAE symbol — TIDA-00318
TIDRAA8.ZIP (193 KB)

Files used for 3D models or 2D drawings of IC components

download Gerber file — TIDA-00318
TIDC590.ZIP (93 KB)

Design file that contains information on physical board layer of design PCB

download PCB layout — TIDA-00318
TIDRAA7.PDF (23 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-00318
TIDRAA3.PDF (139 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ25100 — Standalone 1-cell, 250-mA linear battery charger with 4.2-V charge voltage and prog. pre-charge

Data sheet: PDF | HTML
Battery charger ICs

BQ25101H — Standalone 1-cell 250-mA linear battery charger with 4.35-V charge voltage & charging indication

Data sheet: PDF | HTML
Battery charger ICs

BQ25100H — Standalone 1-cell, 250-mA linear battery charger with 4.35-V charge voltage and prog. pre-charge

Data sheet: PDF | HTML
Battery charger ICs

BQ25100A — Standalone 1-cell, 250-mA linear battery charger with 4.3-V charge voltage and prog. pre-charge

Data sheet: PDF | HTML
Battery charger ICs

BQ25101 — Standalone 1-cell 250-mA linear battery charger, 4.2-V charge voltage and charging status indication

Data sheet: PDF | HTML
Battery charger ICs

BQ51003 — BQ51003 Wireless power Receiver

Data sheet: PDF | HTML

Start development

Hardware development

Evaluation board

BQ25100EVM-654 — Battery Charge Solution for Single-Cell Li-Ion Battery-Powered Systems Evaluation Module

This reference design is suitable for low power wearable devices including a Qi-compliant wireless receiver (bq51003) and ultra-low current 1-cell Li-ion linear charger (bq25100). It features an ultra-small size (5 x 15 mm2), capable of low-charging currents down to 10 mA and up to 250 mA with (...)

EVM user’s guide: PDF
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00318 — Qi (WPC) Compliant Wireless Charger for Low Power Wearable Applications
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BQ25100EVM-654 — Battery Charge Solution for Single-Cell Li-Ion Battery-Powered Systems Evaluation Module

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Hardware development
Reference design
TIDA-00318 — Qi (WPC) Compliant Wireless Charger for Low Power Wearable Applications
TI’s Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

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* Test report TIDA-00318 Test Results Aug 27, 2014

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