The RA9520 is a highly-integrated single-chip wireless power transmitter/receiver IC (TRx). The device can be configured to receive or transmit an AC power signal through magnetic induction.

The RA9520 integrates a high-efficiency Synchronous Full Bridge Rectifier and control circuitry to modulate the load to send message packets to the Transmitter (Tx) to optimize power delivery. Wireless power transfer is managed by an integrated 32-bit ARM® Cortex®-M0 processor offering a high level of programmability while consuming extremely low standby power. The processor can also control GPIOs to indicate operating and fault modes.

The RA9520 features EEPROM or non-volatile memory that enables customers to customize the design parameters such as default FOD thresholds and implement over-the-air (OTA) control firmware updates. It is available in an ultra-small 40-DSBGA package.


  • Delivers up to 24W of power in proprietary mode
  • 15V/1.6A integrated high-performance main LDO (MLDO)
  • Supports latest WPC 1.3 specification
  • ±2% accurate output current sensing for robust FOD detection
  • WattShare™ TRx Mode with up to 5W of RX output power
  • Supports bi-directional data communications
  • Embedded 32-bit ARMTM Cortex-M0 processor
  • 16kB EEPROM memory to support OTA updates
  • Switch mode PCLAMP for robust over-voltage clamping
  • Ping detection for reduced power consumption at 100% charge state
  • Supports X-Y alignment coils
  • 1.2V and multiple other IO voltage rail support to interface with processors of advanced technology nodes
  •  Package: 2.13 × 3.25 × 0.6 mm with 0.40mm ball pitch, 40-DSBGA




Type Title Date
Datasheet Log in to Download PDF 402 KB
Brochure PDF 8.73 MB
Application Note PDF 810 KB
Manual - Hardware PDF 640 KB
Overview PDF 1.14 MB
Application Note Log in to Download PDF 3.74 MB
White Paper PDF 627 KB
7 items

Design & Development


IDT Overview & Wireless Charging

IDT develops and sells a broad range of semiconductors that are used in a wide variety of industrial applications and consumer products. Established in Silicon Valley in 1980, IDT employs 1,500 people worldwide. The company's chips are used to enable today's mobile Internet. In fact, virtually every 3G and 4G phone call made around the world goes through IDT products. IDT's semiconductors play an essential role in today's advanced technology. Its market leading timing devices, for example, serve as the heartbeat of electronic systems. Another one of its products is helping scientists at CERN move, manage, and make sense of the vast amounts of data gathered from experiments at the Large Hadron Collider.

Always on the cutting edge, IDT is also the leader in wireless charging. Wireless charging delivers cord free convenience for today's consumer products and is a great differentiator for highly competitive markets. The company's wireless power transmitters and receivers are currently in use by countless consumers in smartphones, wearables, charging stations, computer monitors, lamps, remote controls, and furniture. IDT recently introduced wireless charging kits, removing much of the cost and engineering expertise previously required to integrate wireless charging into consumer products. Wireless charging is just the latest way IDT is helping make life a little easier for us all.