The PMB7860 is a highly integrated system-on-chip (SoC) from Infineon Technologies, designed for use in wireless charging applications. It serves as a complete solution for both the transmitter and receiver sides of inductive wireless power transfer systems. This integrated approach simplifies design, reduces component count, and improves overall system efficiency.

Applications:

• Wireless charging pads for smartphones and tablets
• Wireless charging enabled furniture
• Wireless charging for wearables (smartwatches, fitness trackers)
• Wireless charging in automotive consoles
• Wireless power transfer for medical devices

Features:

• Highly integrated SoC solution
• Supports Qi standard wireless charging protocol
• Foreign Object Detection (FOD) for safety
• Adaptive Rectifier Configuration (ARC) for optimized efficiency
• Integrated full-bridge inverter (transmitter)
• Integrated synchronous rectifier (receiver)
• Precise voltage and current regulation
• Over-voltage, over-current, and over-temperature protection

Benefits:

• Simplified wireless charger design
• Reduced bill of materials (BOM) cost
• Improved system efficiency and performance
• Enhanced safety features to protect devices
• Compliance with industry standards (Qi) for interoperability
• Smaller footprint for compact designs
• Faster time-to-market

Additional Details:

The PMB7860 typically operates within the frequency range specified by the Qi standard (110-205 kHz). It includes advanced control algorithms to optimize power transfer efficiency and minimize heat generation. The device also incorporates sophisticated Foreign Object Detection (FOD) capabilities, which prevent power transfer if a metallic object is detected in the magnetic field, thus preventing overheating and potential damage. Different versions and configurations of the PMB7860 are available to cater to various power level requirements, ranging from 5W to 15W. It uses I2C interface for configuration and monitoring.

Infineon provides comprehensive design support, including reference designs, software libraries, and documentation, to facilitate rapid integration of the PMB7860 into wireless charging applications. This integrated solution allows for a more streamlined development process and enables manufacturers to create smaller, more efficient, and safer wireless charging products.