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Texas Instruments BQ500511ARHAT
- Part No.:
- BQ500511ARHAT
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
BQ500511ARHAT.pdf
- Description:
- IC WIRELESS TRANSMITTER 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:428
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Product details
Overview
BQ500511ARHAT from Texas Instruments is a WPC v1.2 A11-compliant wireless power transmitter controller IC designed to pair with the bq50002A analog front end for 5-V Qi-certified charging systems. It delivers up to 5 W output, achieves >75% system efficiency, supports dynamic power limiting (DPL), and implements accurate foreign object detection (FOD) via real-time efficiency monitoring in smartphone and wearable charger applications.
For engineers reviewing the BQ500511ARHAT datasheet, BQ500511ARHAT pinout, BQ500511ARHAT application, or BQ500511ARHAT equivalent, key selection criteria include its 40-pin VQFN package, I²C interface, dual PWM control outputs for full-bridge driver coordination, thermal shutdown capability via TSENSE, and FOD calibration through dedicated analog threshold pins - all critical for robust, safety-certified wireless power transmitter design.
Technical Context
The BQ500511ARHAT operates as a digital baseband controller that manages closed-loop power regulation by commanding external analog circuitry (bq50002A) via MODE, PWM_CTRL, PWM1/CLK_OUT, and PWM2/UP_DOWN signals. It implements WPC v1.2 A11 coil specification compliance with fixed-frequency operation between 110 kHz and 205 kHz, using frequency modulation (not duty cycle) for power control when MODE is low.
Its communication stack processes COMM1/COMM2 inputs from the bq50002A to decode receiver packets (EPT, CEP, CS100), while internal algorithms perform real-time FOD by comparing input power (ISENSE), coil voltage (VPEAK), and reported receiver power. Fault handling includes configurable LED indication (LED_A/B/C), buzzer output (BUZZ), and automatic shutdown on overvoltage, overcurrent, or NTC-triggered thermal events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wireless Standard | WPC v1.2 A11 compliant; enables Qi-certified 5-V transmitter designs |
| Max Output Power | 5 W; supports mainstream smartphone and wearable charging requirements |
| Operating Frequency Range | 110–205 kHz; adjustable upper limit to 190 kHz via FLIM pin for regional regulatory alignment |
| Standby Power | <30 mW during digital ping; minimizes no-load energy waste in consumer chargers |
| FOD Accuracy | Configurable 0–1000 mW loss threshold via FOD_THR pin; meets WPC safety heating limits |
| Supply Voltage Range | 2.0–3.6 V (AVCC/DVCC); compatible with standard 3.3-V logic rails and LDOs |
| Operating Temperature | –40°C to +85°C; validated for industrial and automotive accessory environments |
Pinout & Package
The BQ500511ARHAT is housed in a thermally enhanced 6.00 mm × 6.00 mm, 40-pin VQFN (RHA) package with exposed thermal pad for efficient heat dissipation in compact wireless charging pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM1 / CLK_OUT (Pin 1) | Control signal output | Delivers PWM1 or internal clock to bq50002A; rising edge adjusts frequency/duty cycle based on MODE state |
| PWM2 / UP_DOWN (Pin 2) | Control signal output | Drives frequency/duty-cycle adjustment of bq50002A; high/low transitions increase/decrease output power |
| ISENSE (Pin 3) | Analog input | Monitors primary-side input current for DPL and overcurrent protection |
| VSENSE (Pin 9) | Analog input | Senses input supply voltage to trigger DPL when droop exceeds threshold |
| FOD_CAL (Pin 10) | Analog input | Calibrates load-dependent FOD correction (–1000 to +1000 mW/A) to maintain accuracy across power range |
| LED_A / LED_B / LED_C (Pins 11, 12, 14) | Digital outputs | Drive status LEDs directly with current-limit resistors; support 10 selectable indication schemes via LED_MODE |
| TSENSE (Pin 13) | Analog input | Accepts NTC-based voltage divider for external thermal shutdown at 1-V threshold |
| DRV_EN (Pin 37) | Digital output | Enables/disables full-bridge driver stage in bq50002A during fault or standby |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Power Limiting (DPL) | Automatically reduces output power when input voltage sags - enables reliable operation from USB 5-V/500-mA sources without brownout |
| Configurable FOD | Adjustable 0–1000 mW loss threshold and load-compensated correction eliminate false triggers while ensuring metal object safety |
| Multi-mode LED Indication | 10 preprogrammed visual states (standby, charging, complete, fault, FOD warning, DPL active) selectable via single resistor on LED_MODE |
| Integrated Fault Handling | Hardware-level response to OVP, OCP, OTP, and FOD trip - halts power transfer and asserts BUZZ/LED within milliseconds |
| Trickle-Charge Support | Responds to CS100 packet to sustain top-off charging after EPT-01, improving battery longevity without user intervention |
Applications
| Smartphone Charging Pad | Wearable Charger Dock |
|---|---|
Use Scenario: Compact desktop or bedside wireless charger for smartphones supporting Qi v1.2. IC Role / Device Role / Timing Role: Digital baseband controller coordinating power delivery, communication, and safety monitoring in transmitter subsystem. Use Value: Enables <5-W, >75% efficient, WPC-certified designs with integrated FOD and DPL - eliminating need for external microcontroller or safety ICs. | Use Scenario: Multi-device charging station for smartwatches and earbuds with independent coil zones. IC Role / Device Role / Timing Role: Central transmitter controller managing dual-coil sequencing and shared power budget allocation. Use Value: Supports simultaneous charging via programmable LED modes and fault isolation - reducing BOM count versus discrete MCU-based solutions. |
| Medical Device Charger | Automotive In-Car Transmitter |
Use Scenario: Wireless charging module embedded in hospital-grade patient monitors or portable diagnostic tools. IC Role / Device Role / Timing Role: Safety-critical power management unit enforcing strict thermal and FOD thresholds per IEC 62368-1. Use Value: Provides certified thermal shutdown (TSENSE), precise 400-mW FOD baseline, and fault-latched LED indication - meeting medical EMC and reliability requirements. | Use Scenario: Integrated center console or cupholder wireless charger in passenger vehicles. IC Role / Device Role / Timing Role: Automotive-grade transmitter controller operating across extended temperature range with robust ESD immunity. Use Value: Delivers –40°C to +85°C operation, 1000-V HBM/250-V CDM ESD rating, and 190-kHz FLIM compliance for global vehicle certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless power transmitter controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| bq500212ARHAT | Single-chip solution integrating AFE and controller; lacks separate PWM outputs and external FOD calibration pins | Targeted at cost-sensitive, lower-power (<3 W) transmitters where board space is critical | Select if minimizing component count outweighs need for fine-grained FOD tuning or multi-coil scalability |
| MP-A20 (from MediaTek) | Supports WPC v1.2.3 and AirFuel; uses proprietary firmware architecture and different pinout; no native TSENSE or BUZZ outputs | Used in higher-end multi-mode chargers requiring backward compatibility and faster communication rates | Select only when migrating to dual-standard (Qi + AirFuel) platforms and redesigning PCB layout and firmware stack |
Compared with bq500212ARHAT and MP-A20, the BQ500511ARHAT offers superior FOD configurability and direct hardware-level control of external AFEs - making it optimal for high-reliability, field-tunable transmitter designs where safety certification and thermal margin are paramount.
Availability
BQ500511ARHAT is available at Aetrix Electronics and suitable for smartphone charging pads, wearable docks, medical device chargers, and automotive in-car transmitters requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for BQ500511ARHAT 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, embedded processing, and wireless connectivity solutions with emphasis on reliability, safety, and system-level integration.
The BQ500511ARHAT belongs to TI's Wireless Power Transmitter Controller product line, engineered specifically for WPC-compliant 5-V Qi charging systems requiring high efficiency, robust foreign object detection, and seamless integration with analog front ends like bq50002A.
FAQ
What is the primary function of the BQ500511ARHAT in a wireless power system?
The BQ500511ARHAT serves as the digital baseband controller in a two-chip wireless power transmitter solution. When paired with the bq50002A analog front end, the BQ500511ARHAT handles WPC v1.2 A11 protocol compliance, power regulation via frequency modulation, foreign object detection, fault management, and LED/buzzer status indication - enabling fully certified 5-W Qi charging systems without requiring an external microcontroller.
Does the BQ500511ARHAT support standalone operation without the bq50002A?
No, the BQ500511ARHAT is not designed for standalone operation. It requires the bq50002A analog front end to drive the full-bridge power stage, condition communication signals (COMM1/COMM2), and provide clock synchronization (CLK_IN). The BQ500511ARHAT generates control signals (PWM1, PWM2, MODE, DRV_EN) but lacks integrated gate drivers, power MOSFETs, or analog sensing circuitry needed for direct coil driving.
How does the BQ500511ARHAT implement Foreign Object Detection (FOD)?
The BQ500511ARHAT implements FOD by continuously calculating unaccounted power loss using measured input power (via ISENSE and VSENSE), estimated coil losses, and receiver-reported power. It compares this loss against a user-configurable threshold set by the voltage on FOD_THR (0–2.5 V → 0–1000 mW). If exceeded, it halts power transfer and asserts fault indicators - meeting WPC v1.2 safety requirements for metal object heating prevention.
Can the BQ500511ARHAT operate from a USB 5-V source?
Yes, the BQ500511ARHAT supports operation from a 5-V USB source via Dynamic Power Limiting (DPL). When input voltage droop is detected on VSENSE, the BQ500511ARHAT automatically reduces operating frequency to lower power draw - maintaining stable operation even from current-limited 500-mA USB ports. This feature is enabled by default and requires no firmware configuration.
What package type and thermal characteristics does the BQ500511ARHAT have?
The BQ500511ARHAT is packaged in a 6.00 mm × 6.00 mm, 40-pin VQFN (RHA) with exposed thermal pad. Its thermal metrics include RθJA = 31.8°C/W, RθJB = 6.8°C/W, and RθJC(bot) = 1.8°C/W - indicating strong board-level heat dissipation capability essential for sustained 5-W operation in thermally constrained charging pads.
BQ500511ARHAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Applications:
- Wireless Power Transmitter
- Current - Supply:
- 3.45mA
- Voltage - Supply:
- 2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VQFN (6x6)
BQ500511ARHAT FAQ
1.How can I place an order for BQ500511ARHAT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ500511ARHAT 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 BQ500511ARHAT reliable?
The price and inventory of BQ500511ARHAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ500511ARHAT is usually 5 days.
3.What payment methods are accepted for BQ500511ARHAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ500511ARHAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ500511ARHAT?
BQ500511ARHAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ500511ARHAT 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 BQ500511ARHAT?
For technical support, including BQ500511ARHAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ500511ARHAT requirements.
6.How does Aetrix verify that BQ500511ARHAT is sourced from the original manufacturer or authorized distributors?
All BQ500511ARHAT 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 BQ500511ARHAT meets industry standards.
7.What is the process for return or replacement of BQ500511ARHAT?
All BQ500511ARHAT units undergo pre-shipment inspection (PSI). If there is an issue with BQ500511ARHAT, 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 BQ500511ARHAT part is unused and in its original packaging.
Return procedure for BQ500511ARHAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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