NXP — Wireless Power Solutions

MWCT1x1x: 15 Watt Wireless Charging Transmitter ICs

WCT-15W1CFFPD: 22W MP-A11 Fixed Frequency Transmitter Reference Design

What is it?

Consumers will be able to charge/power their devices using wireless inductive charging.
 

What Problem Does it Solve?

Charging wireless has the following benefits:

1. No need for electric contacts. Some medical and food devices benefit from this
2. Device can be completely sealed against water ingression
3. Convenience - no need to plug or unplug

What are the Features and Benefits?

New 22W SINGLE COIL TRANSMITTER
 

What are the Focus Applications/Markets?

• Mobiles: iPhone, Samsung, Google, LG, Sony, Microsoft, Nokia, etc.
• Industrial: Tools, robot cleaner, home appliances, etc.
• Consumer: Ikea, Philips, iHome, Softbank, AirCharge, PowerSquare, etc.

Value Proposition

Built in Safety

Foreign Object Detection (FOD)

• Q-Factor: Comparison of expected and measured resonance curve (conductive materials shifts resonance frequency)
• Power loss method: Monitoring of unexpected losses in the system
• Surface temperature measurement

Over voltage/current/temperature protection with peripherals

• Comparators connected directly to PWM module
• 100% safe even when the core is busy

Application Flexibility

• Open architecture
• Custom FOD
• Additional application
• Full control of library parameters
• System/user interfaces definition
• Proprietary monitoring/protections
• Proprietary messages between Tx and Rx

MWCT1x1x: 15 Watt Wireless Charging Transmitter ICs

The NXP® 15 W wireless charging ICs provide complete controller functionality to implement a wireless charging transmitter solution.

• Using an optimized hardware and software platform, Our transmitter ICs implement and control the power transfer function, as well as monitor and manage overall system states, such as foreign object detection, temperature, and system efficiency
• The standard solution provides a standalone, low-cost implementation of a 15-watt transmitter; the premium solution offers additional hardware and software resources to customize the application
• All solutions are fully compliant with the latest Wireless Power Consortium (WPC)-Qi specification

Features

• Compliant with the latest Wireless Power Consortium (WPC) specification
• Power transfer efficiency exceeding 75%
• Optimized Foreign Object Detection algorithm
• Support for most 15W single-coil applications, regardless of coil type
• On-chip digital demodulation for lower bill-of-materials cost
• Low active and standby power
• Premium version, MWCT1111, available for additional design flexibility and product differentiation
• Easy-to-use debug and configuration tools to speed up product development

WCT-15W1CFFPD: 22W MP-A11 Fixed Frequency Transmitter Reference Design

The 22W watt MP-A11 single-coil fixed frequency wireless charging transmitter reference design uses the WCT10xx transmitter controller IC that integrates all required functions for the Wireless Power Consortium (WPC) Qi-compliant wireless power transmitter design. This solution uses NXP touch sensing technology or analog PING to detect a mobile device for charging while using the lowest possible standby power.

Features

• Compliant with the Qi v1.2.4 specification
• WPC MP-A11 topology (introduced by NXP)
• Compatible with Industrial and Consumer Extended Power Profile (EPP) - 15 W
• Fixed frequency, cost-optimized consumer design
• Greater than 70% transfer efficiency
• Integrated digital demodulation on chip
• Q-Factor and robust power loss Foreign Object Detection (FOD)
• Supports I2C, UART, SPI, and CAN interfaces
• Software-based solution to provide maximum design freedom