STMicroelectronics has launched new transmitter and receiver analysis boards to streamline the event of Qi-compliant wi-fi chargers as much as 15W. These boards, based mostly on the corporate’s STWLC38 and STWBC86 ICs, are designed to facilitate the fast prototyping and testing of wi-fi charger techniques.
The STEVAL-WLC38RX board, that includes the STWLC38 5W/15W receiver IC, and the STEVAL-WBC86TX board, containing the STWBC86 5W transmitter IC, are instrumental in constructing wi-fi charger prototypes effectively. Each boards are appropriate with the STSW-WPSTUDIO graphical software program atmosphere, which assists within the growth course of.
The STWLC38 receiver IC is notable for its help of the Qi 1.3 15W Prolonged Energy Profile (EPP) and 5W Baseline Energy Profile (BPP). It additionally features as a 5W transmitter, enabling reverse energy switch for device-to-device charging. The IC incorporates a synchronous rectifier and a low-dropout (LDO) linear regulator, changing energy from the receiver coil to a programmable DC output voltage between 4V and 12V. Its power-transfer effectivity reaches as much as 85%. Moreover, ST’s Adaptive Rectifier Configuration (ARC) mode enhances the receiver-detection distance by 50%, providing elevated spatial freedom for system positioning and optimum energy switch.
On the transmitter facet, the STWBC86 Qi 1.2.4 BPP-compatible 5W transmitter IC integrates a high-efficiency, low-impedance full-bridge inverter and drivers. This design minimizes energy dissipation and reduces the invoice of supplies. The IC manages the vitality transferred by the transmitter coil by adjusting the PWM frequency and responsibility cycle.
Each ICs are designed to function with a large input-voltage vary, making them appropriate for quite a lot of shopper and industrial merchandise. They’re dynamically managed by an Arm® Cortex®-M0+ digital core for optimum effectivity. The built-in non-volatile reminiscence (NVM) helps superior options and permits for firmware updates to accommodate protocol evolution.
Designed for compact functions, the STWLC38 wi-fi energy receiver and the STWBC86 transmitter are housed in small chip-scale packages, measuring 2.12mm x 3.32mm WLCSP40 and three.26mm x 3.67mm WLCSP72 respectively. Each ICs embrace built-in thermal administration and electrical safety.
The analysis boards are tailor-made to expedite the event of wi-fi charging options for a various vary of functions. These embrace shopper electronics like smartphones, tablets, smartwatches, and wearables; medical gadgets resembling private medical gadgets, drug-delivery techniques, and transportable ultrasound gadgets; in addition to different merchandise together with toothbrushes, shavers, pc peripherals, listening to aids, charging instances, energy instruments, and cell robots.
Each the STEVAL-WLC38RX receiver board and the STEVAL-WBC86TX transmitter board are presently accessible on www.st.com, priced at $72.28 and $84.53 respectively.
