Overview
Description
The PTX30W is an efficient single-chip NFC Receiver for NFC wireless charging applications including bi-directional data transfer. The PTX30W is a highly integrated solution for NFC-based wireless charging systems combining power harvesting, wireless power negotiation, and charging of a Lithium-Ion battery in a single chip.
The integration reduces the required number of external components. Combined with its RF performance it is well suited for integration into space constrained devices enabling fast charging and maximum flexibility in the system design.
Features
- Highly integrated NFC Wireless Charging Listener device
- Highly efficient Active Rectifier
- Up to 1W harvesting power
- RF interface according to NFC-Forum Type 2 Tag
- Li-Ion battery charger with constant charging current from 5mA to 250mA
- MCU LDO regulator with 1.8V or 3.3V output, up to 50mA
- Accurate embedded power negotiation protocol
- Designed according to NFC Forum Wireless Charging standard
- NFC Custom NDEF feature and proprietary transparent data channel
- Standalone operation and support of optional external Host MCU
- I2C slave interface
- Two configurable GPIOs
Comparison
Applications
Design & Development
Software & Tools
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
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PTX30W - Termination Current Configuration with the 22mAh Battery
Hi, I am currently developing a charging system using the PTX30W and PTX130, in combination with a 22 mAh Li-ion rechargeable battery. According to common charging guidelines, the recommended termination current (ITERM) for a battery of this capacity is approximately 0.05C to 0.1C, which corresponds to 1 ...
Jul 22, 2025 -
PTX30W Shipping Mode
I'm in the process of bringing up custom hardware with a PTX30W and host MCU and I'm having issues putting the PTX30W in shipping mode.I can read device information (via ptx30w_GetDeviceInformation()) and status (via ptx30w_GetSystemStatus()) so I conclude the communication interface is working. I was ...
Sep 13, 2024 -
PTX30W SHIPPING_MODE_ENABLE initial state
Hello, What is the state of the SHIPPING_MODE when chips are received? Is shipping mode enabled or disabled when they leave manufacturing? Based on my understanding...The datasheet is not clear regarding the initial state. Thanks in advance, Spencer
Apr 17, 2025
News & Blog Posts
Blog Post
Jul 25, 2024
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