What is the maximum distance between RX and TX coils?This depends on the coil design. Common designs are using 3mm to 5mm of gap. However, we have designed coils for 100W application with 2cm coil distance and with very good efficiency. In general, l...
Is FOD (Foreign Object Detection) supported both in TX and RX ICs or only one side of the power transfer components taking care of this?FOD tuning is required for both Rx and TX. The TX assumes the role to trigger FOD. Both of our Tx devices support ...
How do I connect the TCPP01-M12 for only 5V if I do not use the USB Type-C™ Power Delivery protocol?If you do not use the Power Delivery protocol, you must use pull down resistors (Rd) on the CC line to inform the source about sink presence. Then are...
For 1W to 5W range, don't you think NFC Charging could be a better choice?NFC charging is more suitable for lower power range, typically up to 500mW. For applications in the range of 500mW to 100W, ST Wireless Power portfolio is a good fit.
Is it possible to send your own data from TX to RX and vice versa?It is possible to send data from Rx to Tx at a low data rate. As this communication is Qi native even for low power profiles, a MCU is requested to drive the transfer. In BPP (Baseline...
Is there any other competing standard for wireless charging and Qi?Airfuel Alliance representing resonance technology is the other competing technology, but Qi is dominating the market.
Are the ST wireless charging ICs Qi certified? What are the steps and costs involved in Qi certification?The Qi certification is for the end application and not the IC. The Qi certification mainly consists of compliance tests and interoperability tes...
What type of Type C charger is needed for Wireless Charging TX?It depends on the platform: for up to 5W, a standard USB-C charger (5V/1A) is enough. For high power, a USB-PD charger may be recommended or even a powerful DC charger.
Are these ST wireless charging products also for automotive application?Currently our devices are not Automotive Grade, however new Automotive Grade Transmitters are in the pipeline.
Does the ICs pass the electromagnetic compatibility / immunity requirements ?Yes, all evaluation board designs have been EMC & EMI certified.
Is it possible to provide us an evaluation board and reference material for testing?Sure, all our evaluation boards are available via ST Sales Representatives. Please contact us to get more information.
Do you offer any Rx charging chips in packages other than CSP or BGA?No, all our WLC Rx ICs are WLCSP package.
How much software is required to be written for the M0 MCU for operation? Will it work to some extent "as-is"?Our WLC ICs come with standard Firmware (Config and Patch files) which the user can program and get started with Wireless Power Transfer. Th...
What is the best location to place an ECMF on PCB?What is the best location to place an ECMF on PCB? Our best recommendation is to put our ECMF close to the connector, however for some application we are open to discuss with customers about possible ...
How does ECMF behave with external magnetic field?How does ECMF behave with external magnetic field?, In an industrial environment, we can have in fact some strong magnetic field.There is no saturation of our ECMF happening because there is no magne...
Is ECMF connected to both Tx and Rx lines of both sides?You showed in the demo that ECMF is connected on both sides of a USB cable for example. Is ECMF connected to both Tx and Rx lines of both sides? I mean, does it filter Tx lines before signal tr...
Can ECMF4-40A100N10 be used for 2.5Gbit and 5Gbit Ethernet interface ?2.5Gbps, 5Gbps, or even 10Gbps are achieved with 4 differential pairs, meaning that the data rate on each pair is divided by 4. In addition, PAM modulation is used, which decreases...
How does the user control the inrush current using an external capacitor?The schematic in the X-NUCLEO-DRP1M1 datasheet shows capacitors C7/C8 cap on MOS Drain/Gate. The inrush current is controlled by adding optional capacitors on the VBUS path if t...
What is the purpose of Capacitor C3 in the block diagram?Capacitor C3 is the bulk capacitor defined in the USB-C PD specification used to limit the min/max inrush current amplitude.The USB-C power delivery specification defines cSnkBulk and cSrcBulk ...
Does the DRD (data switch) require DRP (power switch)? Does the DRD (data switch) require DRP (power switch)? Yes. It is mandatory by the standard.However, with TCPP02, although the product is SRC only and not DRP, it is possible to use DRD (Devic...