Description
The P9241-G is a highly integrated, magnetic induction, wireless
power transmitter that supports Baseline Power Profile (BPP),
7.5W wireless charging for iPhone mode, and 10W wireless
charging for Android proprietary modes. The external step down
regulator in the front end of P9241-G design enables wide input
voltage range of 5V to 19V.
The P9241-G transmitter IC integrates an industry-leading 32-bit
ARM® Cortex®-M0 processor, offering a high level of programmability and extremely low standby power consumption. Integrated
current sense amplifier, full bridge MOSFET drivers, and bias
regulators reduces the component count of the solution and
differentiates the P9241-G from the competition.
The P9241-G transmitter generates power through the power coil,
detects the presence of a wireless power receiver, decodes the
communication packets from the receiver, and adjusts the
transmitted power by controlling the voltage based on feedback
from the receiver. The device is specially designed to support A11a
coil configuration and goes into fixed-frequency operation mode to
support 7.5W charging for Apple iPhones. It uses an external
oscillator for very accurate 127.7kHz fixed frequency operation.
The P9241-G features two LED outputs with pre-defined userprogrammable blinking patterns for end-user indication, which
supports a wide range of applications. The transmitter detects if a
foreign metal object is placed on the transmitter pad by measuring
the power loss between the received power and the transmitted
power during the Power Transfer Phase. The I2C serial
communication allows the user to read the transmitter’s basic information, such as voltage, current, frequency, and fault conditions.
The P9241-G also features a wide range of system protections,
such as over-current, over-voltage, under-voltage lockout, and
thermal management circuits to safe guard wireless power systems
under fault conditions.
The device is available in a lead-free, space-saving 48-VFQFPN
package. The product is rated for a -40ºC to +85ºC operating
temperature range.

Features
 Supports 7.5W wireless charging for iOS iPhones
 Supports 10W wireless charging for Android phones
 Fixed frequency operation for iPhones
 Wide input voltage range: 5V to 19V
 WPC-1.2.4 compatible, A11a coil configuration
 EN303417 CE certification compatible
 Feedback control for external input step-down regulator
 Integrated drivers for external power MOSFETs
 Embedded 32-bit ARM® Cortex®-M0 processor (trademark of
ARM, Ltd.)
 Voltage and current demodulation scheme for WPC
communication
 Integrated current sense amplifier
 Low standby power
 Dedicated remote temperature sensing
 User-programmable power transfer LED indicators
 User-programmable foreign objects detection (FOD)
 Active-LOW enable pin for electrical on/off
 Over-current and over-temperature protection
 Supports I
2C interface
 -40 to +85°C ambient operating temperature range
 48-VFQFPN (6  6 mm) RoHS-compliant package