The P9235A-RB is a highly integrated, magnetic induction, wireless power transmitter supporting up to 5W of total wireless system power. The P9235-RB offers a pre-programmed bootloader that must be used in conjunction with an external flash memory that contains control firmware. This architecture gives user a flexibility to change the firmware in the external flash to meet application specific requirements. IDT also provides firmware to implement standard WPC coil configurations such as the A11a.

The P9235A-RB includes an under-voltage lockout, Foriegn object detection (FOD)  and thermal management circuit to safeguard the device under fault conditions. Together with the P9225-R receiver (RX), the P9235A-RB forms a complete 5W wireless power system solution.

The P9235A-RB is available in a Pb-free, space-saving 5 × 5 mm 40-VFQFPN package. The product is rated over an
operating temperature range of -40°C to +85°C.

Features

  • Power transfer up to 5W
  • Wide input voltage range: 4.25V to 21V
  • WPC compatible
  • Integrated step-down switching regulator
  • Embedded 32-bit ARM® Cortex®-M0 processor (trademark of ARM, Ltd.)
  • Integrated drivers for external power FETs
  • Simultaneous voltage and current demodulation scheme for robust communication
  • Integrated current sense amplifier
  • Low standby power
  • Dedicated remote temperature sensing
  • Two LED outputs that can indicate power transfer and fault conditions
  • Foreign object detection (FOD)
  • Active-LOW enable pin for electrical on/off
  • Over-current and over-temperature protection
  • Supports I2C interface
  • -40 to +85°C ambient operating temperature range
  • 5 × 5 mm 40-VFQFPN RoHS-compliant package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
P9235A-RBNDGI Active NDG40P2 VFQFPN 40 I Yes Tray
Availability
P9235A-RBNDGI8 Active NDG40P2 VFQFPN 40 I Yes Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
P9235A-RB Datasheet Datasheet PDF 971 KB
User Guides & Manuals
P9235A-RB Layout Guide Guide PDF 1.75 MB
Application Notes & White Papers
Tuning Qi and AirFuel / PMA Inductive Resonance Circuits for Optimal Efficiency White Paper PDF 541 KB
Other
Wireless Power Overview Overview PDF 534 KB
Wireless Power Reference Solution for 0.5W to 3W Applications (WP3W-RK) 日本語 Product Brief PDF 333 KB
P9235A-R Wireless Power Transmitter for 3W Applications 日本語 Product Brief PDF 246 KB

Software & Tools

Title Other Languages Type Format File Size Date
P9235A-RB A11a Configuration Flash HEX File Software ZIP 20 KB

Evaluation Boards

Part Number Title Sort ascending
P9235A-RB-EVK Wireless Power Transmitter Evaluation Kit for P9235A-RB