Overview

The 5W1COILTX is a 5 W single-coil transmitter reference design based on the Freescale

MWCT1000CFM wireless charging IC. The Freescale 5 W single-coil transmitter provides what

engineers need most: high performance at low cost. The reference design provides the highest

efficiency and active charging area available while maintaining the most cost competitive electronic

bill of materials (BOM).

The design is based on the Wireless Power Consortium (WPC) A11 transmitter definition, comprising

of a 5 V DC input source, full-bridge inverter topology and frequency control methodology. Freescale

extends support to any coil topology which uses a 5 V input source; therefore, this reference design

currently supports A11, A12 and A16 coil configurations on a single platform, as well as any future

single coil design. This reduces the need for different hardware to support multiple (and future) coil

types with similar characteristics.

Target Applications

• 5 W single-coil wireless charging

applications

• Mobile phone chargers

• Point-of-sale terminals

• Handheld medical devices

• Mobile phone accessories such as

battery banks and active phone sleeves

• PC accessories, including keyboards

and mice

Exceptional performance at a low cost

Wireless Charging IC

Inverter Control

Low-Power

Pre-Drive

Touch-Sensing

Power Stage

Demodulation

GPIO

Freescale Technology

Optional

WCT-5W1COILTX Single-Coil Wireless Charger Block Diagram

WCT-5W1COILTX Single-Coil Wireless Charger Block Diagram

Freescale Single-Coil Wireless

Charger Reference Design

Consumer, Industrial