P9028AC-0AWGI

Overview

The P9028AC-0AWGI 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 voltage, supporting up to 1A current. The device integrates a synchronous full-bridge rectifier and a tracking LDO regulator. It features advanced programmable foreign object detection (FOD) via external resistors and I2C registers, closed-loop power transfer control, and temperature monitoring through an external NTC thermistor. The component utilizes a WLCSP package with dimensions of 3.06 x 2.89 x 0.6 mm and a 0.4 mm pitch.

Feature Summary

• Dual-mode operation supporting automatic switching between WPC AC and PMA DC modulation for improved efficiency.
• Integrated high-efficiency synchronous full-bridge rectifier and 5V tracking LDO output stage.
• Advanced programmable foreign object detection (FOD) techniques derived from transmitted and received power transfer algorithms.
• I2C interface providing real-time values for rectified voltage, output current, and switching frequency.

Applications

• Mobile device wireless charging receivers
• Consumer electronics requiring Qi-compliant power reception
• PMA-compatible portable application power supplies

Procurement Notes

This device is restricted to high-volume and strategic applications only. Verify availability through authorized distributors as the product status may be obsolete. Ensure compliance with export categories and moisture sensitivity levels during handling. Confirm lead-free status and packaging specifications prior to order placement.

Selection Notes

Select this component for designs requiring minimal external components to reduce solution area. It is suitable for applications needing both WPC and PMA protocol support without manual switching. Consider the WLCSP package constraints for PCB layout optimization. Ensure the design supports the required I2C communication and external FOD resistor configuration.

Part Context

The P9028AC belongs to Renesas' wireless power receiver family, designed to replace discrete solutions with a single-chip approach. It complements other power management ICs by providing standardized wireless reception capabilities. The device is part of a series that includes variants like the P9023, offering different form factors and integration levels for various market segments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The P9023 is listed as a related enhanced dual-mode receiver but requires verification for direct pin-to-pin or functional compatibility. Consult official Renesas resources for current obsolescence notices and alternative recommendations.