Wireless Power Transmitter for ≤3W

Applications

P9235A-R

Datasheet

© 2016 Integrated Device Technology, Inc

1

May 17, 2016

Description

The P9235A-R is a 3W, magnetic induction, wireless power

transmitter for low power applications. The system-on-chip

operates with an input voltage range of 4.5 – 5.5V while

integrating micro-controller, voltage regulation, over-current

protection, full bridge power stage drivers and on-chip

simultaneous voltage and current demodulation.

The transmitter includes industry-leading 32bit ARM® Cortex®-

M0 processor offering a high level of programmability, while

consuming extremely low standby power. The device features

two LED outputs with pre-defined user programmable blinking

patterns, buzzer and programmable over-current protection

communication allows the user to read back information such as

voltage, current, frequency and fault conditions. Together with the

P9027LP-R receiver, the P9235A-R is a complete wireless power

system solution.

The P9235A-R is available in a Pb-free, space-saving VFQFN 5

mm X 5 mm, 40 pin package. The product is rated over an

operating temperature range of -40ºC to +85ºC.

Typical Applications



Smart Watches



Headsets



Health and Fitness monitors



Portable Medical applications

Figure 1. Application Diagram

Features





Supports receiver for up to 3W of power transfer



80% peak efficiency (when coupled with P9027LP receiver)



Integrated power stage drivers



Low standby power



Simultaneous voltage and current demodulation



Integrated 32 bit ARM® Cortex®-M0 Processor





Programmable current limit



Over-Current and Over-Temperature protection



Active low enable pin for electrical on/off



Pre-defined programmable LED patterns



Dedicated remote temperature sensing



-40ºC to +85ºC ambient operating temperature range



VFQFN 5mm X 5mm, 40 pin package

EN

On

Off

SCL

P9235A-R

GL_BRG1

GH_BRG1

GL_BRG2

GH_BRG2

VSNS

Discrete

R,C Filter 2

LED_GRN

LED_RED

LDO33

4.5V -5.5V

SW_B

VIN_LDO

VO_5

LDO33

LDO18

SDA

ILIM

LED_PAT

RSVD1

RSVD2

Resistor

dividers

LDO18

TS

LDO18

Discrete

R,C Filter 1