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Texas Instruments BQ51014YFPT
- Part No.:
- BQ51014YFPT
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 28-XFBGA, DSBGA
- Datasheet:
-
BQ51014YFPT.pdf
- Description:
- IC WIRELESS PWR RCVR 28DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,496
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Product details
Overview
BQ51014YFPT from Texas Instruments is a Qi v1.0–compliant integrated wireless power receiver IC for 5 V regulated output, featuring full synchronous rectification, dynamic rectifier control, adaptive communication current limiting, and 15 V input overvoltage protection. It delivers up to 1.5 A output current and achieves 93% peak AC–DC efficiency in portable devices such as smartphones and headsets.
For engineers reviewing the BQ51014YFPT datasheet, BQ51014YFPT pinout, BQ51014YFPT application, or BQ51014YFPT equivalent, key selection considerations include WPC v1.0 compliance, dynamic VRECT thresholding (5.11–7.08 V), programmable CS100 termination, adapter power-path multiplexing support, and thermal shutdown at 155°C.
Technical Context
The BQ51014YFPT implements a digital controller with integrated synchronous rectifier FETs, LDO regulation, and bidirectional backscatter communication via COM1/COM2 pins using 2-kbps differential bi-phase encoding per WPC v1.0. Its dynamic rectifier control adjusts VRECT setpoints across four load-dependent thresholds to optimize transient response.
It supports dual-input operation: wireless power via AC1/AC2 coil interface and wired adapter input via AD/AD-EN pins with 12.5 V OVP (bq51014-specific), enabling seamless power-path arbitration. The device integrates NTC-based temperature monitoring, ILIM-based hardware current limiting, and multifunction TERM pin for charge-status signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulated Output Voltage | 5.0 V ±2%, maintained under 0–1.5 A load for stable system rail supply |
| Peak AC–DC Efficiency | 93%, achieved via low-RDS(on) NMOS synchronous rectifier and optimized LDO |
| Input Overvoltage Protection | 15 V on RECT pin, clamped by internal open-drain CLMP1/CLMP2 FETs |
| WPC Communication | 2-kbps bi-phase modulation, compliant with WPC v1.0 for authentication and error packet exchange |
| Dynamic Rectifier Thresholds | Four programmable VRECT setpoints (5.11 V to 7.08 V) scaling with ILOAD to improve transient recovery |
| Adapter OVP Threshold | 12.5 V rising edge on AD pin, specific to bq51014 variant for wired input safety |
| CS100 Termination Support | Programmable via RTERM; enables precise end-of-charge signaling at %IMAX (KTERM = 200 Ω/%) |
Pinout & Package
Package: 1.9 × 3 mm, 20-pin DSBGA (YFP). Thermal resistance θJA = 58.9°C/W; bottom-side thermal pad enhances PCB heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 / AC2 | AC input from receiver coil | Differential RF input nodes feeding synchronous rectifier; require external matching and filtering |
| RECT | Rectified DC node | Internal full-wave rectifier output; connects to bulk capacitor (4.7–22 µF) before LDO input |
| OUT | Regulated 5 V output | Delivers up to 1.5 A to system load; includes tight voltage regulation and low ripple (<10 mV @ 1 A) |
| COM1 / COM2 | Backscatter communication drivers | Open-drain outputs modulating reflected impedance for WPC packet transmission to transmitter |
| TERM | Charge status 100% signal | Configurable termination pin (bq51014 only); sets ITERM-HI = (RTERM/200) × 0.01 × IMAX |
| AD / AD-EN | Adapter input and enable | Enables wired power-path multiplexing; AD-EN drives external PFET gate with ~4 V below AD voltage |
| TS-CTRL | Thermal/fault control | 3-state input for NTC biasing or EPT fault signaling; supports cold/hot thresholds (18.5–60.8 VTS) |
| ILIM | Hardware current limit programming | Analog input setting IILIM = 250 / RILIM; enables 150–1500 mA configurable output current limit |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Efficiency Scaling | Adjusts rectifier operating mode (full/half-sync) based on load to maintain >85% efficiency from 100 mA to 1.5 A |
| Adaptive Communication Limit | Reduces COMM current to 350–435 mA during light loads (<300 mA), then scales to IOUT + 50 mA for robust noise immunity |
| Low-Power Dissipative Clamp | CLMP1/CLMP2 FETs activate at 15 V on RECT, shunting excess energy through 0.47 µF caps-no external Zener required |
| Integrated Stand-Alone Controller | No external MCU or firmware needed; all WPC v1.0 handshaking, packet generation, and power-loop control handled internally |
| Thermal Shutdown with Hysteresis | Shuts down at 155°C junction; restarts only after 20°C cooldown, preventing thermal cycling in enclosed designs |
Applications
| Smartphone Wireless Charging | Wireless Headset Power Supply |
|---|---|
Use Scenario: Embedded in smartphone rear housing to receive inductive power from Qi-certified charging pads. IC Role / Device Role / Timing Role: Primary 5 V power supply IC; handles coil rectification, WPC v1.0 communication, and LDO regulation without host intervention. Use Value: Enables contactless charging with 93% peak efficiency and <10 mV output ripple, eliminating need for discrete rectifier + LDO + comms IC stack. |
Use Scenario: Integrated into compact Bluetooth headset battery compartment for cordless charging. IC Role / Device Role / Timing Role: Standalone wireless power receiver managing both power delivery and thermal safety in space-constrained enclosure. Use Value: Delivers 5 V/1.5 A with programmable CS100 termination and NTC-based thermal monitoring-critical for small Li-ion cells. |
| Digital Camera Battery Charger | Portable Media Player Docking Station |
Use Scenario: Used in rechargeable battery pack for DSLR/mirrorless cameras, accepting power from desktop Qi dock. IC Role / Device Role / Timing Role: Regulated 5 V source with adapter multiplexing; switches seamlessly between wireless and USB-C wired input. Use Value: Adapter OVP (12.5 V) and EN1/EN2 logic enable safe dual-input arbitration-prevents backfeed and ensures priority to wired source when present. |
Use Scenario: Embedded in docking cradle for portable media players, providing continuous charging while docked. IC Role / Device Role / Timing Role: Wireless power receiver with dynamic rectifier control and adaptive communication limiting. Use Value: Four-tier VRECT thresholding (5.11–7.08 V) maintains stable 5 V output during rapid load transients typical of audio playback/startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless power receiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| bq51013AYFPT | No CS100 termination support; AD-OVP disabled; fixed communication current limit (400 mA) | Suitable for cost-sensitive receivers where charge-status signaling is unnecessary | Select bq51013A if CS100 and adapter OVP are not required; lower BOM cost and identical pinout |
| bq51222YFPT | Qi v1.2.4 compliant; supports 15 W; integrated 3.3 V LDO; higher integration (no external BOOT caps) | Targets next-gen high-power wearables and tablets requiring extended protocol support | Choose bq51222 for future-proofing beyond Qi v1.0 and >5 W applications; not drop-in compatible due to different pin mapping |
Compared with bq51013AYFPT and bq51222YFPT, the BQ51014YFPT uniquely balances WPC v1.0 compliance, programmable CS100, and adapter OVP in a minimal 1.9×3 mm footprint-making it optimal for legacy Qi 5 W designs requiring precise charge termination and dual-input safety.
Availability
BQ51014YFPT is available at Aetrix Electronics and suitable for smartphone wireless charging, portable headset power supplies, digital camera battery chargers, and portable media player docking stations requiring stable component supply and long-term lifecycle support.
Supply support for BQ51014YFPT 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 leader delivering analog and embedded processing solutions, with deep expertise in power management and wireless charging ICs.
The bq5101x product line was designed specifically for WPC-compliant 5 W wireless power receivers, integrating rectification, regulation, communication, and safety functions into a single chip for portable electronics.
FAQ
What is the primary function of the BQ51014YFPT in a wireless power system?
The BQ51014YFPT serves as a complete Qi v1.0–compliant wireless power receiver IC, performing AC-to-DC conversion via synchronous rectification, regulating a stable 5 V output, executing WPC communication with the transmitter, and managing thermal, overvoltage, and current-limit safety functions-all without external firmware. Its role is to replace discrete rectifier, LDO, and comms ICs in portable devices.
Does the BQ51014YFPT support both wireless and wired power inputs?
Yes, the BQ51014YFPT supports dual-input operation: wireless power via AC1/AC2 coil interface and wired adapter input via the AD/AD-EN pins. It features adapter OVP at 12.5 V (bq51014-specific), automatic power-path arbitration, and push-pull AD-EN driver for external PFET control-enabling seamless transition between charging sources.
How does the dynamic rectifier control in the BQ51014YFPT improve system performance?
The BQ51014YFPT implements four dynamic VRECT thresholds (5.11 V to 7.08 V) that scale with output load current. This allows the IC to command higher rectified voltage during transients, maintaining sufficient headroom for the internal LDO to sustain 5 V output-reducing droop and improving recovery time without increasing steady-state losses.
What is the purpose of the TERM pin on the BQ51014YFPT?
The TERM pin on the BQ51014YFPT provides programmable charge-status signaling (CS100), enabling precise end-of-charge detection. By connecting an external resistor RTERM, users set ITERM-HI = (RTERM/200) × 0.01 × IMAX. This feature is exclusive to the bq51014 variant and is absent in bq51013A-making BQ51014YFPT essential for battery management systems requiring accurate full-charge indication.
Is the BQ51014YFPT recommended for new designs?
No-the official Texas Instruments documentation states "bq51014 is Not Recommended For New Designs." While BQ51014YFPT remains available and supported for existing production, TI recommends evaluating newer alternatives like bq51222 for new projects due to enhanced Qi compliance (v1.2.4), higher power capability (15 W), and improved integration.
BQ51014YFPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Applications:
- Wireless Power Receiver
- Current - Supply:
- 1.5A
- Voltage - Supply:
- 4V ~ 10V
- Operating Temperature:
- 0°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-DSBGA
BQ51014YFPT FAQ
1.How can I place an order for BQ51014YFPT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ51014YFPT 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 BQ51014YFPT reliable?
The price and inventory of BQ51014YFPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ51014YFPT is usually 5 days.
3.What payment methods are accepted for BQ51014YFPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ51014YFPT transactions.
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4.How is shipping managed for BQ51014YFPT?
BQ51014YFPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ51014YFPT 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 BQ51014YFPT?
For technical support, including BQ51014YFPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ51014YFPT requirements.
6.How does Aetrix verify that BQ51014YFPT is sourced from the original manufacturer or authorized distributors?
All BQ51014YFPT 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 BQ51014YFPT meets industry standards.
7.What is the process for return or replacement of BQ51014YFPT?
All BQ51014YFPT units undergo pre-shipment inspection (PSI). If there is an issue with BQ51014YFPT, 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 BQ51014YFPT part is unused and in its original packaging.
Return procedure for BQ51014YFPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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