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STMicroelectronics STWBC2-HP | Demoboard STDES-50W2CWBC
50 W two-coil wireless charger transmitter reference design
Details
| Topologie | Drahtlose Energieübertragung |
| Eingangsspannung | 4.1-24 V |
| Schaltfrequenz | 110-145 kHz |
| Ausgang 1 | 38 V |
| IC-Revision | 1 |
Beschreibung
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.
Eigenschaften
- 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
Typische Anwendungen
- Wireless Chargers
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | λDom typ.(nm) | Farbe | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chiptechnologie | 2θ50% typ.(°) | L(µH) | IR(A) | ISAT(A) | fres(MHz) | Montageart | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | Interface typ | Typ | Gender | Pins | Leiterplattendicke(mm) | Arbeitsspannung(V (DC)) | Verpackung | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Rot | Downloads26 Dateien Strahldaten
| Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWL-SMCW SMT Mono-color Chip LED Waterclear | dominante Wellenlänge [typ.]625 nm | FarbeRot | Spitzen-Wellenlänge [typ.]630 nm | Lichtstärke [typ.]250 mcd | Durchlassspannung [typ.]2 V | ChiptechnologieAlInGaP | Abstrahlwinkel Phi 0° [typ.]140 ° | – | – | – | – | MontageartSMT | – | – | – | – | – | – | – | – | – | – | VerpackungTape and Reel | |||
 | WE-TPC SMT-Speicherdrossel, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-TPC SMT-Speicherdrossel | – | – | – | – | – | – | – | Induktivität1 µH | Nennstrom4.8 A | Sättigungsstrom4.6 A | Eigenresonanzfrequenz110 MHz | MontageartSMT | – | – | – | Gleichstromwiderstand14 mΩ | – | – | – | Pins2 | – | – | – | ||||
 | WE-LHMI SMT Speicherdrossel, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-LHMI SMT Speicherdrossel | – | – | – | – | – | – | – | Induktivität3.3 µH | – | – | Eigenresonanzfrequenz20 MHz | MontageartSMT | Performance Nennstrom10 A | Sättigungsstrom 112.4 A | Sättigungsstrom @ 30%27 A | Gleichstromwiderstand14.9 mΩ | – | – | – | – | – | – | – | ||||
 | WR-USB Type C Connectors, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-USB Type C Connectors | – | – | – | – | – | – | – | – | Nennstrom5 A | – | – | MontageartTHR | – | – | – | – | Interface typType C | TypHorizontal | GenderBuchse | Pins24 | Leiterplattendicke1.6 mm | Arbeitsspannung48 V (DC) | VerpackungTape and Reel |