Renesas RA9530: 50W WattShare TRx Mode Wireless Power Transceiver

Product Key Information Overview

  • Product Model and Core Positioning: The Renesas (瑞萨) RA9530 is a highly integrated single-chip wireless power transceiver (TRx) that supports 50W wireless power reception and features the WattShare TRx mode, enabling simultaneous wireless power transmission and reception.
  • Functionality and Architecture:
  • Transmits AC power through magnetic induction technology, with a built-in high-efficiency synchronous full-bridge rectifier and control circuitry that communicates with the transmitter (Tx) to optimize power transfer.
  • Managed by a low-power 32-bit Arm Cortex-M0 processor, offering flexible programmability to control GPIO (General Purpose Input/Output) for indicating operational and fault statuses.
  • Process and Packaging:
  • Manufactured using 0.13μm bipolar-CMOS-double-diffused metal-oxide-semiconductor (BCD) technology, the chip (AW936 D002YNA) has a thickness of approximately 390μm, featuring four layers of aluminum metal interconnects (with tungsten vias and contact points), and employs shallow trench isolation (STI) structures for device isolation.
  • The package form is a 3.33 mm×2.55 mm×0.52 mm (thickness) 48-ball wafer-level chip-scale package (WLCSP), with a thick copper Redistribution Layer (RDL) at the bottom to ensure uniform distribution of solder balls.
  • Key Components and Performance:
  • Includes an array of N-type laterally diffused MOSFETs (N-LDMOS), with a single sub-array size of approximately 99μm×208μm. Key device dimensions such as gate length, effective channel length, and gate dielectric thickness have been optimized, and cobalt silicide (CoSi) field plates are used to enhance performance.
  • Integrates 6T SRAM (cell size approximately 1.8μm×1.3μm) and EEPROM (cell size approximately 1.1μm×0.7μm) to meet storage and program execution requirements.
  • Application Scenarios: This chip is used in the Fi Smart Dog Collar Series 3, providing a wireless power solution for it.

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