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Texas Instruments BQ51052BYFPT
- Part No.:
- BQ51052BYFPT
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 28-XFBGA, DSBGA
- Datasheet:
-
BQ51052BYFPT.pdf
- Description:
- IC WIRELESS RCVR/CHARGER 28DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:431
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Product details
Overview
BQ51052BYFPT from Texas Instruments is a Qi v1.2-compliant wireless power receiver IC integrating synchronous rectification, Li-ion battery charging, and digital communication control in a single 28-pin DSBGA package. It delivers up to 1.0 A charge current with 4.40-V regulated output, supports modified JEITA temperature profiling, and features 15-V input overvoltage protection and 93% peak AC-DC efficiency for portable battery-powered devices.
For engineers reviewing the BQ51052BYFPT datasheet, BQ51052BYFPT pinout, BQ51052BYFPT application, or BQ51052BYFPT equivalent, key selection criteria include its 4.40-V battery regulation, NTC-based thermal monitoring with programmable thresholds, FOD-enabled foreign object detection, and dual-mode wired/wireless priority control via EN2 and AD pins.
Technical Context
The BQ51052BYFPT implements a single-stage architecture combining AC-to-DC conversion and constant-current/constant-voltage battery charging. Its internal synchronous rectifier uses low-RDS(on) N-MOSFETs (100 mΩ typical), and the VRECT regulation dynamically tracks BAT voltage during charging before switching to fixed 5.11-V regulation.
Digital control enforces WPC v1.2 compliance through capacitive load modulation on COMM1/COMM2 pins, while TS/CTRL provides dual-function NTC-based temperature sensing and end-power-transfer signaling. The ILIM pin sets charge current via external resistor, and TERM configures termination threshold as a percentage of IBULK.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulated Output Voltage | 4.40 V ±0.04 V - precise Li-ion termination voltage enabling full capacity utilization without overvoltage stress |
| Max Charge Current | 1.0 A - supported by internal power stage and thermal design for compact handheld applications |
| Input Overvoltage Threshold | 15 V - protects against coil-induced transients and ensures robust operation under misalignment |
| Peak AC-DC Efficiency | 93% - minimizes thermal rise and extends usable wireless charging time per session |
| VRECT Regulation | 5.11 V - fixed regulation mode activated after voltage regulation phase completes |
| NTC Beta Value | 3380 - required for accurate temperature mapping across JEITA-defined hot/cold thresholds |
| Thermal Shutdown | 155°C - safeguards silicon integrity during sustained high-power operation or poor PCB thermal design |
Pinout & Package
Package: 28-pin DSBGA (YFP), 3.00 mm × 1.90 mm, 0.4-mm pitch, exposed thermal pad connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 / AC2 | AC Input | Differential inputs from receiver coil; tolerate ±0.8 V negative swing and 20 V positive swing |
| BAT | Charger Output | Direct connection to battery anode; delivers regulated 4.40-V output with ≤190-mV dropout at 1 A |
| ILIM | Charge Current Set | Analog input setting IBULK via external resistor; KILIM = 303–321 AΩ for 500–1000 mA range |
| TS/CTRL | Temp Sense / EPT Control | Connects to NTC for JEITA thermal management or pulled low/high to signal EPT fault/termination to transmitter |
| COMM1 / COMM2 | Qi Communication | Open-drain outputs for capacitive load modulation; enable bidirectional feedback per WPC v1.2 protocol |
| EN2 | Wired/Wireless Priority | Digital input selecting wired adapter (low) or wireless (high); enables seamless source arbitration |
| FOD | Foreign Object Detect | Analog input measuring rectified power level to detect metallic interference per WPC requirements |
| TERM | Termination Threshold | Current-sinking input setting ITERM as % of IBULK; RTERM = 2.4 kΩ yields 100 mA termination at 1 A bulk current |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous Rectifier + LDO | Eliminates external diodes and linear regulators; reduces BOM count and improves thermal performance |
| Modified JEITA Temperature Profile | Enables safe fast-charging above 45°C with reduced current and lower voltage regulation (4.20 V) for bq51052B |
| Dynamic VRECT Tracking | Maintains minimal voltage headroom between RECT and BAT during CC phase, maximizing efficiency across full charge cycle |
| Programmable Termination Threshold | Allows fine-tuning of cutoff current (e.g., 100 mA at 1 A IBULK) to balance runtime vs. battery longevity |
| WPC v1.2 Communication Stack | On-chip digital controller handles packet framing, error checking, and impedance modulation-no host MCU required |
Applications
| Smartphones | Wireless Earbuds |
|---|---|
Use Scenario: Integrated into smartphone mainboard for contactless charging without proprietary connectors. IC Role / Device Role / Timing Role: Primary wireless power receiver and battery charger managing full CC/CV profile and thermal safety. Use Value: Enables Qi-certified charging at up to 1.0 A with 4.40-V regulation, extending usable battery capacity versus 4.20-V alternatives. | Use Scenario: Embedded in compact earbud charging case PCB to recharge multiple earbuds simultaneously. IC Role / Device Role / Timing Role: Dual-role power manager handling both case battery charging and earbud battery top-up via secondary coils. Use Value: Small 3.0 × 1.9 mm DSBGA footprint fits tight space constraints while supporting modified JEITA for safe multi-battery charging. |
| Portable Medical Sensors | Wearable Fitness Trackers |
Use Scenario: Powering sealed, waterproof patient monitors requiring maintenance-free inductive charging. IC Role / Device Role / Timing Role: Isolated power interface converting coil energy to regulated battery voltage with no exposed contacts. Use Value: 15-V OVP and thermal shutdown prevent field failures in unattended deployments; NTC monitoring satisfies medical thermal safety standards. | Use Scenario: Enabling daily wireless charging for wrist-worn trackers with limited internal volume. IC Role / Device Role / Timing Role: Efficient battery charger minimizing heat generation during overnight charging cycles. Use Value: 93% peak efficiency reduces thermal load on skin-facing enclosure; 4.40-V output increases runtime per charge by ~5% vs. 4.20-V variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless power receiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ51051BYFPT | 4.35-V regulated output; standard JEITA profile; supports up to 1.5 A charge current | Better suited for higher-capacity batteries requiring tighter voltage tolerance and full JEITA compliance | Select when 4.35-V chemistry or >1.0 A charging is required; not drop-in due to different VBAT-REG and thermal thresholds |
| BQ51050BYFPT | 4.20-V regulated output; standard JEITA profile; supports up to 1.5 A charge current | Optimized for legacy Li-ion cells and cost-sensitive designs where 4.20-V termination is mandated | Choose for compatibility with existing 4.20-V battery designs; differs in VOREG, VRECH, and TS thresholds |
Compared with BQ51052BYFPT, BQ51051BYFPT offers higher charge current and standard JEITA but lacks modified JEITA's elevated temperature operation, while BQ51050BYFPT provides baseline 4.20-V regulation ideal for legacy systems but sacrifices capacity and thermal flexibility.
Availability
BQ51052BYFPT is available at Aetrix Electronics and suitable for smartphones, wireless earbuds, and portable medical sensors requiring stable component supply, long-term lifecycle support, and WPC v1.2 certification.
Supply support for BQ51052BYFPT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and wireless technologies with over 90 years of innovation in power management and signal chain solutions.
The bq5105xB product line delivers integrated wireless power receivers for portable electronics, designed to simplify Qi-compliant charging system implementation by merging rectification, regulation, and battery management into one IC.
FAQ
What is the regulated battery voltage of the BQ51052BYFPT?
The BQ51052BYFPT provides a precisely regulated 4.40-V output voltage (VOREG = 4.36–4.44 V at 1 A load), optimized for newer high-capacity Li-ion cells. This value is factory-trimmed and specified in the Electrical Characteristics table under "Regulated BAT(output) voltage" for the bq51052B variant. It differs from the 4.20-V and 4.35-V options in the same family.
How does the BQ51052BYFPT implement foreign object detection (FOD)?
The BQ51052BYFPT implements FOD by measuring rectified power level at the FOD pin, which connects to the internal power monitor circuit. When the measured power exceeds the WPC v1.2 threshold (±375 mW error margin), the device signals the transmitter to reduce or halt power transfer. This function requires proper layout of the FOD sensing network and calibration per TI application note SLUS629.
Can the BQ51052BYFPT be used with both wired and wireless charging sources?
Yes, the BQ51052BYFPT supports dual-source operation via the AD and EN2 pins. When AD voltage is present and EN2 is low, wired charging takes priority and wireless charging is disabled. When EN2 is high, wireless charging activates if no AD voltage is detected. This arbitration is hardware-controlled and requires no firmware intervention, making it ideal for hybrid-charging consumer devices.
What NTC thermistor parameters are required for the BQ51052BYFPT's temperature monitoring?
The BQ51052BYFPT requires an NTC thermistor with 10-kΩ nominal resistance at 25°C and a Beta value of 3380, as specified in the Electrical Characteristics table. The internal 20-kΩ pullup (NTC-Pullup) and comparator thresholds (e.g., V45C = 18–21% of VTSB) are calibrated for this exact combination to ensure accurate modified JEITA compliance across –10°C to +60°C.
What is the maximum continuous charge current supported by the BQ51052BYFPT?
The BQ51052BYFPT supports a maximum continuous charge current of 1.0 A, as defined by its IBULK specification (500–1000 mA range) and thermal limits. This is lower than the 1.5-A capability of bq51050B/bq51051B due to internal current-sense scaling and modified JEITA thermal derating. Operation above 1.0 A risks triggering ILIM short protection or thermal shutdown.
BQ51052BYFPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Wireless Power Receiver
- Current - Supply:
- 8mA
- Voltage - Supply:
- 4V ~ 10V
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-DSBGA
BQ51052BYFPT FAQ
1.How can I place an order for BQ51052BYFPT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ51052BYFPT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BQ51052BYFPT reliable?
The price and inventory of BQ51052BYFPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ51052BYFPT is usually 5 days.
3.What payment methods are accepted for BQ51052BYFPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ51052BYFPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ51052BYFPT?
BQ51052BYFPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ51052BYFPT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BQ51052BYFPT?
For technical support, including BQ51052BYFPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ51052BYFPT requirements.
6.How does Aetrix verify that BQ51052BYFPT is sourced from the original manufacturer or authorized distributors?
All BQ51052BYFPT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BQ51052BYFPT meets industry standards.
7.What is the process for return or replacement of BQ51052BYFPT?
All BQ51052BYFPT units undergo pre-shipment inspection (PSI). If there is an issue with BQ51052BYFPT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BQ51052BYFPT part is unused and in its original packaging.
Return procedure for BQ51052BYFPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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