IC manufacturers STMicroelectronics
IC manufacturers (103)
- All manufacturers
Analog Devices
Infineon Technologies
Microchip
Onsemi
Renesas
ROHM
STMicroelectronics
Texas Instruments
- 3peak incorporated (28)
- Ablic (23)
- Acco Semiconductor (1)
- Advanced Power (4)
- Allegro Microsystems (100)
- Alpha & Omega Semiconductor (37)
- AnalogySemi (3)
- AnDAPT Inc (204)
- Anpec (13)
- AXElite (2)
- Backward (6)
- Bright Power Semiconductor (1)
- Broadcom (46)
- Cambridge GaN Devices (18)
- Chipanalog Micro (10)
- Cologne Chips (1)
- Convenient Power (1)
- Dialog Semiconductor (12)
- Diodes Incorporated (259)
- Divimath (8)
- Elmos AG (1)
- EPC (136)
- e-Peas Semiconductors (1)
- Eta Solutions Co. Ltd. (9)
- GaN Systems (8)
- GaNPower (3)
- Giantec (1)
- Gstek Wuxi (1)
- Helix Semiconductor (7)
- IKON (1)
- Indie Semiconductor (8)
- Innovision Semiconductor Inc (2)
- Intel (68)
- Inventchip Technology (3)
- ISSI (51)
- JoulWatt (20)
- KDPOF (3)
- Kinetic Technology (8)
- Lattice semiconductor Corporation (38)
- Littelfuse (1)
- Lumissil Microsystems (8)
- M3 Technology (M3Tek) (7)
- Macnica (22)
- Marvell Semiconductor (1)
- MaxLinear (181)
- Menlo Micro (1)
- MikroE (25)
- MindCet (2)
- Monolithic Power Systems (980)
- Navitas Semiconductor Inc (6)
- NewEdge Technologies, Inc. (1)
- Nexperia (266)
- Nisshinbo Micro Device Inc. (10)
- Novosense Micro (1)
- NXP (333)
- O2 Micro International Ltd (10)
- On Bright (7)
- Panasonic (2)
- PN Junction Semiconductor (2)
- Power Integrations (117)
- Powermat (1)
- Pulsiv (19)
- Qorvo (96)
- Realsil SuRealsil(tek) Microelectronics (1)
- Richtek (297)
- Sanken Electric Co., Ltd. (16)
- Sckipio (6)
- Semtech (86)
- SG-Micro (54)
- SiFive (2)
- Silanna Semiconductor (9)
- Silergy Corporation (33)
- Silicon Laboratory Inc. (108)
- Silicontent Technology (59)
- Silvertel (59)
- Skycore Semiconductors (1)
- Skyworks (33)
- Southchip (14)
- Summit Wireless (1)
- Tagore Tech (7)
- Taiwan Semiconductor (1)
- TDK Corporation (1)
- Tempo Semiconductor (1)
- Torex (37)
- Toshiba (25)
- Transphorm (21)
- TransSIP (2)
- Union (21)
- uPI Semiconductor (2)
- Valens Semiconductor (31)
- Wise Integration (3)
- Wolfspeed (23)
- Xilinx (22)
- XL Semiconductor (3)
- XYSemi (62)
STMicroelectronics STWBC2-HP | Demoboard STDES-50W2CWBC
50 W two-coil wireless charger transmitter reference design
Overview
| Topology | Wireless Power Transfer |
| Input voltage | 4.1-24 V |
| Switching frequency | 110-145 kHz |
| Output 1 | 38 V |
| IC revision | 1 |
Description
The STDES-50W2CWBC is a reference design that implements a Qi-compliant inductive wireless charger transmitter.It supports two coils, which could work alternatively to increase the Rx positioning freedom.The solution supports Qi EPP-compliant mode up to 15 W, featuring an ST proprietary protocol. It can also support 50 W or an even higher wireless power transfer.The STDES-50W2CWBC is based on the STWBC2-HP high-integration, high performance wireless charger system-on-chip.It integrates: three pairs of half-bridge gate drivers, the dedicated DC-DC controllers that support buck, boost and buck-boost topologies, the high-performance Q-factor measurement hardware, the high-resolution main PWM controller, the dedicated Qi communication modulator and demodulator, the USB-PD controller, the buck DC-DC,and the charge pump.It is suitable for one-coil and multicoil solutions in multiple topologies.The STDES-50W2CWBC is a fully assembled reference design developed for performance evaluation only, not available for sale.
Features
- Qi v1.2.4-compliant wireless charging transmitter reference design following MPA2topology
- Supports Qi EPP-compliant mode up to 15 W
- Supports up to 50 W with ST proprietary protocol (STSC)
- Supports two coils working alternatively for positioning freedom
- Supports USB-PD wall adapter input
- Boost DC-DC:
- Key products: STWBC2-HP wireless charging transmitter SoC, STL20N6F7 LV MOSFET
- Input: 4.1 to 24 V DC (from USB adapter)
- Maximum input current: 3 A
- Output: up to 38 V
- Boost DC-DC controlled by STWBC2-HP SoC to convert USB adapter input to the DC bridge voltage of the wireless charger LC tank
- Short DC-DC by P-MOS on the control of STWBC2-HP SoC for the best efficiency
- Main bridge:
- Key products: STWBC2-HP wireless charging transmitter SoC, STL20N6F7LV MOSFET, STG719 analog switch
- Qi-compliant PID power control with frequency, duty-cycle, and voltage
- Switching frequency: 110 to 145 kHz
- ASK demodulation with voltage, current, and phase
- FSK modulation
- Protections for overvoltage, overcurrent, over temperature, and under voltage
- Q-factor estimation
- Auxiliaries:
- Key product: STWBC2-HP wireless charging transmitter SoC
- USB interface, embedded USB-PD stack
- Embedded buck DC-DC to convert 5 to 27 V input to 3.3 and 5 V supply voltages
- Embedded charge pump to double the voltage and support the embeddedgate drivers
- Reserved I²C interface to upgrade to Qi v1.3 with an external secure MCU
Typical applications
- Wireless Chargers
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.(°) | L(µH) | IR(A) | ISAT(A) | fres(MHz) | Mount | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | Interface Type | Type | Gender | Pins | PCB Thickness(mm) | Working Voltage(V (DC)) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 570 nm, Bright Green | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]570 nm | Emitting ColorBright Green | Peak Wavelength [typ.]572 nm | Luminous Intensity [typ.]40 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | MountSMT | – | – | – | – | – | – | – | – | – | – | PackagingTape and Reel | ||||
| WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red | Downloads26 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]625 nm | Emitting ColorRed | Peak Wavelength [typ.]630 nm | Luminous Intensity [typ.]250 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | MountSMT | – | – | – | – | – | – | – | – | – | – | PackagingTape and Reel | |||
 | WE-TPC SMT Tiny Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | – | – | – | – | – | – | – | Inductance1 µH | Rated Current4.8 A | Saturation Current4.6 A | Self Resonant Frequency110 MHz | MountSMT | – | – | – | DC Resistance14 mΩ | – | – | – | Pins2 | – | – | – | ||||
 | WE-LHMI SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | – | – | – | – | – | – | – | Inductance3.3 µH | – | – | Self Resonant Frequency20 MHz | MountSMT | Performance Rated Current10 A | Saturation Current @ 10%12.4 A | Saturation Current @ 30%27 A | DC Resistance14.9 mΩ | – | – | – | – | – | – | – | ||||
 | WR-USB Type C Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Type C Connectors | – | – | – | – | – | – | – | – | Rated Current5 A | – | – | MountTHR | – | – | – | – | Interface TypeType C | TypeHorizontal | GenderReceptacle | Pins24 | PCB Thickness1.6 mm | Working Voltage48 V (DC) | PackagingTape and Reel |