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