The P9243-GB is a highly integrated, magnetic induction, wireless power transmitter that supports up to 15W in compliance with the WPC-1.2.4 specification or proprietary applications. It is compatible with all popular wireless charging protocols including the WPC Baseline Power Profile (BPP), Extended Power Profile (EPP), up to 7.5W charging for iPhones, and Samsung Fast Charge. This system-on-chip solution (SoC) operates with an input voltage range of 5V to 19V.

The P9243-GB transmitter IC includes an industry-leading 32-bit ARM® Cortex®-M0 processor, offering a high level of programmability and extremely low standby power consumption. The P9243-GB has only pre-programmed bootloader firmware in the internal memory, and must be used in conjunction with an external flash memory that contains application firmware. This architecture gives the user the flexibility to change the firmware in the external flash to meet application-specific requirements. For a sizeable business opportunity, the application firmware can also be loaded into the internal OTP memory and flash can be removed.

The device is specially designed to support fixed frequency operation as described in the WPC MP-A11 coil configuration with an external input step-down buck regulator. It uses an external oscillator for very accurate 127.7kHz fixed frequency operation.

The P9243-GB is available in a lead-free, space-saving 48-VFQFPN package. The product is rated for a -40ºC to +85ºC operating temperature range.


  • Power transfer up to 15W at receiver side
  • Wide input voltage range: 5V to 19V
  • WPC-1.2.4 compatible, MP-A11 coil configuration
  • Supports system parameters configuration using a GUI
  • Integrated drivers for external power MOSFETs
  • Embedded 32-bit ARM® Cortex®-M0 processor (trademark of ARM, Ltd.)
  • Simultaneous voltage and current demodulation scheme for WPC communication
  • Integrated current sense amplifier
  • Supports accurate 127.7kHz frequency operation
  • Feedback control for external input step-down regulator
  • Dedicated remote temperature sensing
  • User-programmable power transfer LED indicators
  • User-programmable foreign objects detection (FOD)
  • WPC EPP-based Q-factor detection
  • Active-LOW enable pin for electrical on/off
  • Over-current and over-temperature protection
  • Supports I2C interface
  • -40°C to +85°C ambient operating temperature range
  • 48-VFQFPN (6 × 6 mm) RoHS-compliant package




Type Title Date
Datasheet PDF 1.05 MB
Brochure PDF 8.73 MB
Product Change Notice PDF 734 KB
Product Change Notice PDF 728 KB
Overview PDF 1.14 MB
Application Note Log in to Download PDF 3.74 MB
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Software & Tools - Other Log in to Download ZIP 31.17 MB
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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.