P9028AC-0NBGI

Overview

The P9028AC-0NBGI is an ultra-compact dual-mode wireless power receiver IC compliant with WPC v1.1 and PMA standards. It converts AC signals from a resonant tank into a regulated 5V output via a synchronous full-bridge rectifier and tracking LDO. The device features advanced programmable foreign object detection (FOD) and closed-loop power transfer control. Packaged in a 36-lead WLCSP measuring 3.06 x 2.89 mm, it supports I2C communication for monitoring Vrect, Iout, and switching frequency.

Feature Summary

• Dual-mode operation supporting automatic switching between WPC AC and PMA DC modulation
• Integrated high-efficiency synchronous full-bridge rectifier and 5V tracking LDO regulator
• Advanced programmable Foreign Object Detection (FOD) using external resistors and I2C registers
• Closed-loop power transfer control with I2C interface for real-time parameter monitoring

Applications

• Mobile device charging systems requiring Qi and PMA compatibility
• Automatic dual-mode wireless power receivers
• Applications utilizing minimal external components to reduce solution area

Procurement Notes

Verify the specific suffix NBGI against official Renesas documentation to confirm pinout and electrical characteristics, as suffixes often denote package or temperature variations. Confirm current availability status, as this component family may be subject to discontinuation notices. Ensure sourcing through authorized distributors to guarantee authenticity and compliance with strategic application restrictions.

Selection Notes

Select this IC for designs requiring integrated dual-mode support without separate protocol controllers. The WLCSP package suits space-constrained mobile applications. Verify that the external NTC thermistor and resistor network align with the programmable FOD and current limit requirements. Ensure the host system supports the necessary I2C communication for power negotiation and status monitoring.

Part Context

The P9028AC series represents Renesas' ultra-compact wireless power receiver solutions. It succeeds earlier models like the P9023 by offering enhanced integration in a smaller footprint. The device is designed for high-volume strategic applications, providing a complete single-chip solution for receiving wireless power while managing safety protocols and efficiency optimization.

Replacement Considerations

The P9023 is listed as a related part within the same product family. However, verify if the P9023 meets the specific compactness and dual-mode requirements of the P9028AC. Check datasheets for differences in package dimensions, lead counts, and specific regulatory compliance versions before substitution.