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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. (°) | Application | Interface Type | Gender | Pins (Value) (pcs) | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 155124VS73200 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMSW SMT Mono-color Side View Waterclear | 573 | Bright Green | 575 | 50 | 2 | AlInGaP | 120 | – | – | – | – | SMT | – | – | Tape and Reel | – | – | – | – | – | – | ||
| 155124RS73200 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMSW SMT Mono-color Side View Waterclear | 624 | Red | 632 | 130 | 2 | AlInGaP | 120 | – | – | – | – | SMT | – | – | Tape and Reel | – | – | – | – | – | – | ||
 | 74279262 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | – | – | SMT | 500 | – | – | 120 | 200 | 510 MHz | 1350 | 0.3 | Wide Band | ||
 | 629105136821 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-COM Micro USB 2.0 SMT Type B Horizontal 5 Contacts | – | – | – | – | – | – | – | Micro USB 2.0 | Type B | Receptacle | 5 | SMT | 1000 | 30 | Tape and Reel | – | – | – | – | – | Horizontal | |
 | 61400416021 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-COM USB 2.0 Type A Horizontal | – | – | – | – | – | – | – | USB 2.0 | Type A | Receptacle | 4 | THT | 1500 | 30 | Tray | – | – | – | – | – | Horizontal |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 155124VS73200 | SPEC | |
| 155124RS73200 | SPEC | |
| 74279262 | SPEC | |
| 629105136821 | SPEC | – |
| 61400416021 | SPEC | – |
| Samples |
|---|
| 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. (°) | Application | Interface Type | Gender | Pins (Value) (pcs) | 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 |
|---|