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STMicroelectronics STWBC-WA | Demoboard STEVAL-ISB038V1
1 W wearable wireless power system based on STWBC-WA and STWLC04
Overview
| Topology | Wireless Power Transfer |
| IC revision | 1 |
Description
The STEVAL-ISB038V1 is a wireless battery charger reference design evaluation kit designed for ultra-compact battery operated devices, such as wearable gear, smartwatches, Internet of Things sensors and healthcare devices.The design is optimized for 1-watt wireless power transfer with a half-bridge topology on the transmitter side and with tiny 11 mm and 20 mm coils on the receiver and transmitter sides, respectively. For power transfers up to 3 watts, the design can be modified by using larger coils and a full-bridge configuration on the transmitter.The STWBC-WA transmitter can support a cost-effective half-bridge topology (full-bridge optional) and a powerful software API lets you modify the behavior of LED and general purpose IOs as well as connecting external peripherals or devices like sensors to the design via the on-chip I²C and UART ports.The STWLC04 is designed for 1-watt power transfer based on the Qi protocol, with digital control and precise analog control loops ensuring stable operation. The I²C interface allows a high degree of customization and settings can be stored in the embedded non-volatile memory.
Features
- STWBC-WA based wireless power transmitter
- Additional transmitter module compatible with the STEVAL-ISB038V1 reference kit
- Cost effective Half Bridge topology with integrated drivers
- Optional Full Bridge configuration for 3 W applications
- Active presence detector
- 2-layer PCB for easy design
- Turnkey solution or customizable via APIs
- Parametric customization via graphical interface
- Full KIT characteristics:
- 11 mm coil on Receiver
- 20 mm coil on Transmitter
- 1 Watt delivered on Receiver side
- USB 5 V input
- Foreign Object Detection (FOD) optional
- Graphical interface for monitoring behavior
- Total reference design
- RoHS compliant
- STWLC04 wireless power receiver
- Output voltage: 5 V regulated voltage
- Integrated high efficiency synchronous rectifier
- Li-Ion/Li-Pol charger functionality
- 4-layer PCB for easy design
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | Interface Type | Variant | Gender | Pins | Mount | IR(mA) | Working Voltage(V (AC)) | Packaging | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMSW SMT Mono-color Side View Waterclear, 573 nm, Bright Green | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMSW SMT Mono-color Side View Waterclear | Dominant Wavelength [typ.]573 nm | Emitting ColorBright Green | Peak Wavelength [typ.]575 nm | Luminous Intensity [typ.]50 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]120 ° | – | – | – | – | MountSMT | – | – | PackagingTape and Reel | – | – | – | – | – | – | ||||
| WL-SMSW SMT Mono-color Side View Waterclear, 624 nm, Red | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMSW SMT Mono-color Side View Waterclear | Dominant Wavelength [typ.]624 nm | Emitting ColorRed | Peak Wavelength [typ.]632 nm | Luminous Intensity [typ.]130 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]120 ° | – | – | – | – | MountSMT | – | – | PackagingTape and Reel | – | – | – | – | – | – | ||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | – | – | MountSMT | Rated Current500 mA | – | – | Impedance @ 100 MHz120 Ω | Maximum Impedance200 Ω | Maximum Impedance510 MHz | Rated Current 21350 mA | DC Resistance0.3 Ω | TypeWide Band | ||||
 | WR-USB Mini/Micro Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Mini/Micro Connectors | – | – | – | – | – | – | – | Interface TypeType B | Variantwith Pads & Pegs | GenderReceptacle | Pins5 | MountSMT | Rated Current1000 mA | Working Voltage30 V (AC) | PackagingTape and Reel | – | – | – | – | – | TypeHorizontal | |||
 | WR-USB Standard Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Standard Connectors | – | – | – | – | – | – | – | Interface TypeType A | – | GenderReceptacle | Pins4 | MountTHT | Rated Current1500 mA | Working Voltage30 V (AC) | PackagingTray | – | – | – | – | – | TypeHorizontal |