Texas Instruments BQ500211A

Description

The bq500211A is a second generation digital wireless power controller that integrates all functions required to control wireless power transfer to a single WPC compliant receiver. It is WPC1.1 compliant and designed for 5-V systems as either a WPC type A5 transmitter with a magnetic positioning guide or as a WPC type A11 transmitter without the magnetic guide. The bq500211A the surrounding environment for WPC compliant devices to be powered, safely engages the device, receives packet communication from the powered device and manages the power transfer. To maximize flexibility in wireless power applications, Dynamic Power Limiting (DPL) is featured on the bq500211A. DPL enhances user experience by seamlessly optimizing the usage of power available from limited input supplies. The bq500211A supports both Foreign Object Detection (FOD) and Parasitic Metal Object Detection (PMOD) by continuously monitoring the efficiency of the established power transfer, protecting from power lost due to metal objects misplaced in the wireless power transfer bath. Should any abnormal condition develop during power transfer, the bq500211A handles it and provides indicator outputs. Comprehensive status and fault monitoring features enable a robust system design.

The bq500211A is available in a 48-pin, 7 mm x 7 mm QFN package and operates over a temperature range from –40°C to 110°C.

Features

• Intelligent Control of Wireless Power Transfer
• 5-V Operation Conforms to Wireless Power Consortium (WPC) Type A5 and Type A11 Transmitter Specifications
• WPC1.1 Compliant, Including Foreign Object Detection (FOD)
• Enhanced Parasitic Metal
• Detection (PMOD) Assures Safety
• Dynamic Power Limiting™ for USB and Limited Source Operation
• Digital Demodulation Reduces Components
• LED Indication of Charging State and Fault Status

Typical applications

• Cars and Other Vehicles
• Smart Phones
• Tabletop Charge Surfaces

More information

• Datasheet