BQ51051B Qi Wireless Power Receiver | Texas Instruments
Teilenummer: BQ51051B ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
BQ51051B Übersicht
What is a wireless power receiver IC? A wireless power receiver IC receives energy transferred through an electromagnetic field from a Qi-compatible transmitter, rectifies the received AC power, regulates the resulting DC rail, and can charge a connected battery. In the power-management hierarchy, the BQ51051B belongs to the wireless charging receiver and battery charger class rather than acting as a general-purpose voltage regulator. Its receiver front end, charger control, and power conversion functions are integrated to reduce the number of external power-stage components.
The BQ51051B family is described by Texas Instruments as high-efficiency and Qi v1.2-compliant in the supplied search results. The available package options include BQ51051BRHLR in a 20-VQFN package measuring 3.5 mm by 4.5 mm. The series also includes BQ51051BYFPT in a 28-DSBGA package. The verified data does not provide a single universal package for the family, so the exact package must be selected from the orderable MPN.
Key engineering benefits include integration of the receiver rectifier, LDO, charger control, and digital loops, along with 100 mΩ typical RDS(on) for the synchronous-rectifier and LDO power stage. These integrated functions are intended to improve system efficiency and reduce board complexity compared with a discrete receiver implementation. The exact receiver power rating, coil configuration, battery voltage range, current limit, and thermal limits require the manufacturer datasheet and are not supplied in the verified snippets.
Typical applications include Qi-compatible wireless power receivers in consumer electronics, battery-powered accessories, and embedded charging platforms. In a practical design, the receiver is placed behind the transmitter coil and followed by the required input, output, and battery filtering components defined by the datasheet. Designers should preserve the recommended coil geometry and copper layout because coupling efficiency depends on alignment, inductance, resistance, and shielding conditions.
The main design consideration is package-specific implementation. BQ51051BRHLR uses a 20-VQFN package, while BQ51051BYFPT uses a 28-DSBGA package; they are not interchangeable without a footprint and pinout review. This page distinguishes the family from an exact orderable part and flags specifications not present in the supplied verified data as .
Drop-in-Alternativen für BQ51051B – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
BQ51051BRHLR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
BQ51051BYFPT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
BQ51051B Technische Daten
| Product Type | Integrated wireless power receiver and lithium-ion battery charger |
| Wireless Power Standard | Qi v1.2 compliant |
| Power Stage Topology | Synchronous rectifier and LDO |
| Integrated Functions | Rectifier, LDO, digital control, charger controller, voltage loop, and current loop |
| Power Stage MOSFET Type | N-channel MOSFET |
| Typical MOSFET RDS(on) | 100 mΩ |
| Orderable Package 1 | 20-VQFN, 3.5 mm x 4.5 mm |
| Orderable Package 2 | 28-DSBGA |
| Orderable MPN 1 | BQ51051BRHLR |
| Orderable MPN 2 | BQ51051BYFPT |
| Rectifier | Low-impedance synchronous rectifier |
| Regulator | Integrated low-dropout regulator |
| Charger Control | Integrated charger controller |
| Battery Chemistry | Lithium-ion battery charger |
| Montageart | Surface mount |
| Manufacturer | Texas Instruments |
BQ51051B 28-dsbga Pinbelegungsleitfaden
Pinbelegung für BQ51051B (28-dsbga-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für BQ51051B.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
BQ51051B ist geeignet für 6 Anwendungs: Qi-Enabled Consumer Device Charging, Battery-Powered Wearable Accessory, Wireless Charging Dock, Battery-Powered Industrial Handheld, Qi Receiver Module, Battery-Powered Household Device.
Qi-Enabled Consumer Device Charging
The BQ51051B fits a Qi-enabled consumer device that receives wireless power and charges a lithium-ion battery. Its integrated synchronous rectifier, LDO, charger controller, and voltage/current loops reduce the number of separate receiver power-path blocks. The verified TI ordering information identifies the power stage as using 100 mΩ typical RDS(on) N-channel MOSFETs, which supports efficient energy transfer. Designers should still match the receiver coil, magnetic shield, rectifier filtering, battery chemistry, and thermal layout to the datasheet reference design. Exact receiver power and charging-current ratings require the manufacturer datasheet.
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Battery-Powered Wearable Accessory
A wearable accessory can use the BQ51051B to convert received wireless energy into a regulated battery-charging supply. The integrated receiver and charger architecture is useful when the product needs a compact power path with fewer discrete stages, while the synchronous rectifier can reduce conduction losses. The available verified package variants must be selected according to the wearable PCB footprint. Coil coupling and alignment are especially important in small enclosures, so the design should follow the TI reference layout and validate temperature rise, charge time, standby behavior, and foreign-object or alignment behavior in the final mechanical design.
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Wireless Charging Dock
The BQ51051B is suitable for a Qi-compatible charging dock where a receiver coil is integrated into the product enclosure and a battery is charged through a regulated DC path. The integrated synchronous rectifier, LDO, charger controller, and digital control loops help organize the receiver stage around one device. The 100 mΩ typical RDS(on) power-stage information indicates an emphasis on low resistance and reduced dissipation, but actual dock efficiency depends on coil coupling, rectifier switching, thermal conditions, and the selected system configuration. Use the exact BQ51051BRHLR or BQ51051BYFPT footprint only after checking the datasheet pinout and layout requirements.
Empfohlen
Battery-Powered Industrial Handheld
A battery-powered industrial handheld can benefit from the BQ51051B when wireless charging is preferred over a exposed connector. The integrated receiver reduces the amount of receiver power conversion hardware, while the charger controller supports a more structured lithium-ion charging path. Industrial environments may introduce temperature, vibration, moisture, and repeated-drop conditions that must be evaluated separately from the IC specifications. The verified data does not provide the device's industrial temperature rating, ingress protection, electromagnetic immunity, or safety certification, so those requirements must be verified for the complete product and its charger ecosystem.
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Qi Receiver Module
The BQ51051B can be used in a Qi receiver module that separates the wireless power conversion function from the host product's main controller. A module-level implementation benefits from the integrated rectifier, regulator, charger control, and feedback functions because the host board can focus on system management and battery management coordination. The receiver module designer must define the coil, matching network, output capacitor, battery interface, and thermal path in accordance with the manufacturer datasheet. Package choice is especially important because the verified BQ51051B options include both 20-VQFN and 28-DSBGA configurations.
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Battery-Powered Household Device
The BQ51051B can support a household device that benefits from a cable-free charging experience and accepts Qi-compatible wireless power. Integrating the receiver rectifier, LDO, charger controller, and loops can simplify the power architecture compared with building several separate receiver blocks. The final appliance must account for coil alignment, enclosure materials, standby power, battery safety, heat dissipation, and foreign-object detection behavior. The supplied verified snippets do not provide numerical standby current, maximum receiver power, battery voltage window, or operating temperature, so these values must be taken from the current manufacturer datasheet before release to production.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für BQ51051B – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | BQ51051BRHLR | BQ51051BYFPT |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | Family option: 20-VQFN (3.5x4.5) or 28-DSBGA | 20-VQFN (3.5x4.5) | 28-DSBGA |
| Receiver and Charger Integration | Integrated wireless power receiver and lithium-ion charger | BQ51051B family receiver/charger | BQ51051B family receiver/charger |
| Power Stage MOSFET | N-channel MOSFET | N-channel MOSFET; 100 mΩ typical RDS(on) family information | N-channel MOSFET; 100 mΩ typical RDS(on) family information |
| Orderable Identification | BQ51051B family | 20-VQFN orderable variant | 28-DSBGA orderable variant |
Wichtigste Unterscheidungsmerkmale
- Integrated receiver power path (vs. Generic discrete wireless receiver implementation)
- Low-resistance internal power stage (vs. Generic wireless receiver implementation)
- Family package choice (vs. BQ51051BYFPT)
Designhinweise
Use the manufacturer datasheet layout and reference design as the controlling authority. Keep the wireless receiver power loop compact, preserve the recommended coil geometry, and place input, output, and battery capacitors where specified. The verified material does not provide trace widths, spacing, capacitor values, or thermal-pad dimensions, so these values must be taken from the exact BQ51051B datasheet rather than inferred.
Evaluate the receiver and battery-charging thermal path at the maximum intended load, ambient temperature, and enclosure condition. The verified TI ordering information reports 100 mΩ typical RDS(on) for the integrated N-channel MOSFET power stage, but it does not provide complete dissipation curves or thermal resistance data. Confirm junction-temperature limits and copper or thermal-pad requirements in the manufacturer documentation.
Do not treat BQ51051BRHLR and BQ51051BYFPT as interchangeable solely because both belong to the BQ51051B family. The verified listings identify 20-VQFN and 28-DSBGA packages respectively. Before any substitution, verify land pattern, pin numbering, exposed-pad requirements, receiver configuration, battery charging limits, and the complete datasheet electrical table.
Separate high-current wireless power paths from sensitive feedback, communication, and battery-sensing routes. Follow the manufacturer placement guidance for the receiver coil, magnetic shielding, and power components. Because the verified snippets do not specify trace geometry or loop dimensions, validate layout with the official reference design and thermal, EMI, and wireless-coupling tests.
Compliance-Informationen
The supplied verified data does not explicitly state compliance or qualification status. Check the current TI product page, datasheet, and applicable declarations for the exact orderable MPN.
