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Texas Instruments BQ500511RHAT
- Part No.:
- BQ500511RHAT
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
BQ500511RHAT.pdf
- Description:
- IC WIRELESS TRANSMITTER 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,695
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Product details
Overview
BQ500511RHAT from Texas Instruments is a Qi-compliant wireless power transmitter controller IC designed for WPC v1.2 A11 transmitters. It delivers up to 5 W output, supports Dynamic Power Limiting™ (DPL), achieves >75% system efficiency with bq50002 analog front end, and operates within 110–205 kHz frequency range for precise power regulation in compact 5-V charging pads.
For engineers reviewing the BQ500511RHAT datasheet, BQ500511RHAT pinout, BQ500511RHAT application, or BQ500511RHAT equivalent, key selection considerations include its 40-pin VQFN package, integrated FOD calibration via FOD_THR/FOD_CAL pins, I²C interface (SCL/SDA), three LED status outputs (LED_A/LED_B/LED_C), and thermal shutdown support via TSENSE input - all critical for robust, certified wireless charger design.
Technical Context
The BQ500511RHAT implements closed-loop power control by adjusting operating frequency (110–205 kHz) while maintaining fixed 50% duty cycle, per WPC v1.2 A11 specification. It interfaces exclusively with the bq50002 analog front end via dedicated signals: CLK_IN, COMM1/COMM2, MODE, PWM_CTRL, PWM1/CLK_OUT, and PWM2/UP_DOWN.
Its Foreign Object Detection (FOD) algorithm continuously estimates unaccounted power loss using ISENSE, VPEAK, and receiver-reported power data, triggering shutdown if loss exceeds threshold set by FOD_THR (0–2.5 V → 0–1000 mW). Thermal safety is enforced via TSENSE input with 1-V shutdown threshold, supporting NTC-based overtemperature protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wireless Standard | Compliant with WPC v1.2 A11 specification for 5-V transmitters |
| Max Output Power | 5 W - enables full-charge capability for smartphones and wearables |
| Operating Frequency | 110–205 kHz - adjustable via MODE/PWM signals for WPC-regulated power control |
| FOD Threshold Range | 0–1000 mW - programmable via FOD_THR pin voltage (0–2.5 V) |
| Supply Voltage | 2–3.6 V (AVCC/DVCC) - compatible with standard 3.3-V logic and low-power USB supplies |
| Standby Power | <30 mW during digital ping - meets energy-efficiency requirements for always-on detection |
| Thermal Shutdown | 1-V threshold on TSENSE pin - enables configurable NTC-based overtemperature protection |
Pinout & Package
Package: 6.00 mm × 6.00 mm, 40-pin thermally enhanced VQFN (RHA) with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVCC / DVCC / AVSS / DVSS | Analog & digital power/ground rails | Separate analog/digital supply domains ensure noise isolation for precision sensing and control |
| PWM1/CLK_OUT (Pin 1) | Frequency/duty-cycle control output | Drives bq50002 to adjust power stage timing based on MODE state (frequency vs. duty-cycle mode) |
| MODE (Pin 16) | Control mode indicator | Signals bq50002 whether to regulate via frequency (low) or duty cycle (high) |
| FOD_THR (Pin 35) / FOD_CAL (Pin 10) | FOD configuration inputs | Set FOD trip threshold (0–1000 mW) and load-dependent correction (±1000 mW/A) at power-up |
| LED_A / LED_B / LED_C (Pins 11,12,14) | Status indication outputs | Drive external LEDs with current-limit resistors to display charging state, fault, or DPL activity per LED_MODE selection |
| TSENSE (Pin 13) | Thermal shutdown input | Shuts down transmitter when voltage drops below 1 V - supports NTC-based temperature monitoring |
| SCL / SDA (Pins 29,28) | I²C interface | Enable host MCU configuration and real-time status readback (e.g., fault codes, FOD status) |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Power Limiting™ (DPL) | Automatically reduces output power when input voltage sags - enables stable operation from current-limited 5-V sources like USB ports |
| Configurable FOD Calibration | Two-pin analog programming (FOD_THR/FOD_CAL) allows precise tuning of foreign object detection sensitivity across production units and coil variants |
| Multi-mode LED Indication | Three independent LED drivers with 10 selectable behavior schemes (via LED_MODE resistor divider) provide intuitive visual feedback for charge state, faults, and DPL activation |
| Integrated Power-On Reset | Eliminates need for external reset circuitry - ensures reliable startup sequence across 2–3.6-V supply range |
| Trickle-Charge Support via CS100 | Responds to Charge Status 100% packet by changing LED indication without halting power transfer - enables top-off battery charging per WPC specification |
Applications
| Smartphone Wireless Charging Pad | Wearable Device Charging Station |
|---|---|
|
Use Scenario: Compact desktop or car-mount charging pad delivering 5 W to Qi-enabled smartphones. IC Role / Device Role / Timing Role: Primary controller managing ping detection, communication handshake, frequency-based power regulation, and FOD safety monitoring. Use Value: Enables WPC v1.2 certification with <30 mW standby power and integrated DPL for stable USB-powered operation. |
Use Scenario: Low-profile charging dock for smartwatches and fitness trackers requiring precise 5-W delivery in constrained space. IC Role / Device Role / Timing Role: Transmitter-side digital controller coordinating with bq50002 to drive miniature A11 coils at 110–205 kHz. Use Value: Supports small-form-factor designs via 6×6-mm VQFN package and programmable LED modes for user feedback. |
| Medical Device Wireless Charger | Industrial Handheld Terminal Charger |
|
Use Scenario: Certified charging solution for portable medical monitors where safety-critical FOD and thermal shutdown are mandatory. IC Role / Device Role / Timing Role: Safety-critical controller enforcing FOD thresholds and NTC-based thermal shutdown via TSENSE pin. Use Value: Meets regulatory safety requirements through hardware-configurable FOD (FOD_THR/FOD_CAL) and 1-V thermal trip point. |
Use Scenario: Ruggedized charging station for industrial handhelds operating in variable ambient temperatures. IC Role / Device Role / Timing Role: Robust transmitter controller with extended –40°C to +85°C operating range and I²C-configurable fault reporting. Use Value: Ensures field reliability via wide-temp operation, BUZZ output for audible alerts, and EPT/CEP packet handling per WPC v1.2. |
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 |
|---|---|---|---|
| BQ51013BRHAR | Single-chip 5-W transmitter IC with integrated analog front end; no external bq50002 required | Reduces BOM count but lacks pin-level FOD calibration flexibility and independent LED mode selection | Select when minimizing component count is prioritized over fine-grained FOD tuning or multi-LED status schemes |
| MP-A21 | WPC v1.2-compliant transmitter controller with 32-pin QFN; supports up to 5 W but uses different FOD architecture (voltage-based vs. loss-estimation) | Requires redesign of FOD calibration network and lacks DPL functionality | Select only for legacy MP-A21 platform migration; not drop-in due to differing pinout, control interface, and FOD methodology |
Compared with BQ500511RHAT, BQ51013BRHAR integrates the analog front end for lower BOM cost but sacrifices configurability, while MP-A21 offers alternate WPC compliance with incompatible FOD implementation and no DPL - making BQ500511RHAT optimal for designs requiring tunable safety, USB-supply resilience, and flexible visual feedback.
Availability
BQ500511RHAT is available at Aetrix Electronics and suitable for smartphone charging pads, wearable device docks, medical wireless chargers, and industrial handheld terminal power systems requiring stable component supply, full WPC v1.2 A11 compliance, and long-term lifecycle support.
Supply support for BQ500511RHAT 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 specializing in analog, embedded processing, and wireless technologies, with decades of expertise in power management and connectivity solutions.
The BQ500511RHAT belongs to TI's Wireless Power Transmitter Controller product line, engineered specifically to enable compact, efficient, and safety-certified Qi-compliant 5-V charging systems using a two-chip architecture with bq50002.
FAQ
What is the primary function of the BQ500511RHAT in a wireless power system?
The BQ500511RHAT serves as the digital controller in a two-chip wireless power transmitter solution, coordinating with the bq50002 analog front end to manage ping detection, receiver communication, frequency-based power regulation (110–205 kHz), Foreign Object Detection, and safety shutdown. It does not drive power stages directly but commands bq50002 via PWM and MODE signals to control the full-bridge driver.
How does the BQ500511RHAT implement Foreign Object Detection (FOD)?
The BQ500511RHAT implements FOD by estimating unaccounted power loss using real-time measurements from ISENSE, VPEAK, and receiver-reported power packets. The FOD_THR pin sets the trip threshold (0–1000 mW) via analog voltage, while FOD_CAL compensates for load-dependent variations. If loss exceeds the threshold, the BQ500511RHAT halts power transfer and asserts fault indicators via LED outputs and BUZZ.
Can the BQ500511RHAT operate without the bq50002 analog front end?
No, the BQ500511RHAT is designed exclusively for use with the bq50002 analog front end. It relies on bq50002 for clock generation (CLK_IN), communication channel signals (COMM1/COMM2), and PWM-driven power stage control. The BQ500511RHAT lacks internal gate drivers, high-voltage interfaces, or resonant tank control circuitry - all functions delegated to bq50002 in this two-chip architecture.
What is the role of the LED_MODE pin on the BQ500511RHAT?
The LED_MODE pin selects one of ten predefined LED indication schemes at power-up via a resistor divider to 3 V. It determines how LED_A (green), LED_B (red), and LED_C (orange) behave during standby, charging, fault, FOD warning, DPL activation, and charge completion. Each scheme defines unique blink patterns (e.g., 1.25 Hz slow blink, 5 Hz fast blink) and on/off states mapped to operational states.
Does the BQ500511RHAT support trickle charging after battery full status is reported?
Yes, the BQ500511RHAT supports trickle charging via the WPC Charge Status (CS100) packet. When it receives a CS100 packet indicating 100% battery level, the BQ500511RHAT changes LED indication to "charge complete" but continues power transfer. If the reported charge status later drops below 90%, normal charging indication resumes - enabling safe top-off charging without host MCU intervention.
BQ500511RHAT 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)
BQ500511RHAT FAQ
1.How can I place an order for BQ500511RHAT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ500511RHAT 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 BQ500511RHAT reliable?
The price and inventory of BQ500511RHAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ500511RHAT is usually 5 days.
3.What payment methods are accepted for BQ500511RHAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ500511RHAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ500511RHAT?
BQ500511RHAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ500511RHAT 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 BQ500511RHAT?
For technical support, including BQ500511RHAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ500511RHAT requirements.
6.How does Aetrix verify that BQ500511RHAT is sourced from the original manufacturer or authorized distributors?
All BQ500511RHAT 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 BQ500511RHAT meets industry standards.
7.What is the process for return or replacement of BQ500511RHAT?
All BQ500511RHAT units undergo pre-shipment inspection (PSI). If there is an issue with BQ500511RHAT, 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 BQ500511RHAT part is unused and in its original packaging.
Return procedure for BQ500511RHAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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