Overview
The BQ51050BRHLR from Texas Instruments is a high-efficiency, Qi v1.2-compliant wireless power receiver and Li-Ion/Li-Pol battery charger. This device integrates a wireless power receiver, rectifier, and battery charger into a single, compact package. It is designed for portable applications and supports efficient AC-DC power conversion, complying with the Qi v1.2 communication protocol. The BQ51050BRHLR works in conjunction with the bq500212A transmitter-side controller to enable a complete wireless power transfer system for direct battery charging solutions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage Options | 4.20 V, 4.35 V, 4.40 V | V |
| Maximum Charging Current | Up to 1.5 A | A |
| Peak AC-DC Charging Efficiency | 93% | % |
| Maximum Input Voltage Tolerance | 20 V | V |
| Input Overvoltage Protection | 15 V (typical) | V |
| Thermal Shutdown | Yes | - |
| Overcurrent Protection | Yes | - |
| Temperature Monitoring and Fault Detection | Yes | - |
| Package Options | VQFN (20-pin), DSBGA (28-pin) | - |
| Package Size (VQFN) | 4.50 mm × 3.50 mm | mm |
| Package Size (DSBGA) | 3.00 mm × 1.90 mm | mm |
Key Features
- Single-stage wireless power receiver and Li-Ion/Li-Pol battery charger in a single package.
- Supports 4.20 V, 4.35 V, and 4.40 V output voltage options.
- Maximum charging current up to 1.5 A.
- 93% peak AC-DC charging efficiency.
- Robust architecture with 20 V maximum input voltage tolerance and input overvoltage protection.
- Thermal shutdown and overcurrent protection.
- Temperature monitoring and fault detection.
- Compatible with WPC v1.2 Qi industry standard.
- Power stage output tracks rectifier and battery voltage for maximum efficiency across the full charge cycle.
- Low-impedance synchronous rectifier and low-dropout regulator (LDO) using low-resistance N-MOSFETs.
Applications
- Battery packs.
- Cell phones and smartphones.
- Headsets.
- Portable media players.
- Other handheld devices.
Q & A
- What is the BQ51050BRHLR used for?
The BQ51050BRHLR is used as a high-efficiency wireless power receiver and Li-Ion/Li-Pol battery charger for portable applications.
- What are the output voltage options for the BQ51050BRHLR?
The device supports output voltage options of 4.20 V, 4.35 V, and 4.40 V.
- What is the maximum charging current supported by the BQ51050BRHLR?
The maximum charging current supported is up to 1.5 A.
- What is the peak AC-DC charging efficiency of the BQ51050BRHLR?
The peak AC-DC charging efficiency is 93%.
- Does the BQ51050BRHLR have overvoltage and overcurrent protection?
Yes, it has both input overvoltage protection and overcurrent protection.
- How does the BQ51050BRHLR handle temperature monitoring?
The device includes temperature monitoring and fault detection capabilities.
- Is the BQ51050BRHLR compatible with any industry standards?
Yes, it is compatible with the WPC v1.2 Qi industry standard.
- What types of packages are available for the BQ51050BRHLR?
The device is available in VQFN (20-pin) and DSBGA (28-pin) packages.
- How do I choose the receiver coil inductance for the BQ51050BRHLR?
The receiver coil inductance should be chosen based on the specific design requirements, considering both the inductance value and DC resistance. Refer to the datasheet for detailed guidelines.
- What transmitter circuit is recommended to use with the BQ51050BRHLR?
The bq500212A transmitter-side controller is recommended for use with the BQ51050BRHLR to enable a complete wireless power transfer system.
