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Texas Instruments BQ500414QRGZTQ1
- Part No.:
- BQ500414QRGZTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
BQ500414QRGZTQ1.pdf
- Description:
- IC WIRELESS TRANSMITTER 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,021
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Product details
Overview
BQ500414QRGZTQ1 from Texas Instruments is an AEC-Q100 qualified automotive wireless power transmitter manager for WPC v1.1–compliant Qi charging systems. It integrates digital demodulation, three-coil free-positioning control, FOD/PMOD metal detection, I²C host interface, and 12-V SEPIC front-end support. Designed for in-vehicle infotainment docks and center console chargers, it delivers up to 5 W output with real-time loss monitoring and thermal fault handling.
For engineers reviewing the BQ500414QRGZTQ1 datasheet, BQ500414QRGZTQ1 pinout, BQ500414QRGZTQ1 application, or BQ500414QRGZTQ1 equivalent, key selection criteria include WPC v1.1 compliance, triple-coil array support, analog/digital ping sequence timing, FOD/PMOD resistor-programmable thresholds, and 7-mm × 7-mm VQFN-48 thermal performance under –40°C to 85°C operation.
Technical Context
The BQ500414QRGZTQ1 implements a closed-loop digital wireless power control architecture using sequential analog pinging across three independent coil drive trains (COIL_1.1/1.2/1.3), synchronized digital demodulation of COMM_A±/B± feedback signals, and real-time input power (I_SENSE/V_SENSE) vs. receiver-reported power comparison. Its internal 12-bit ADC samples temperature (T_SENSE), loss threshold (LOSS_THR), LED mode (LED_MODE), and calibration inputs.
It supports active/passive wake-up via EN_PWR pin logic, I²C slave address 0x14 (20 decimal) at up to 1 MHz, and programmable LED indication (three outputs) with seven user-selectable modes. The device uses external resistors on PMOD (Pin 6), FOD (Pin 13), and FOD_CAL (Pin 22) to configure metal detection sensitivity and load-dependent loss compensation per WPC v1.1 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wireless Standard | WPC v1.1 compliant transmitter; supports A6 coil specification and Qi certification |
| Operating Temp | –40°C to +85°C ambient; validated for automotive cabin environments |
| Supply Voltage | V33D/V33A: 3.0–3.6 V; supports externally supplied 3.3-V rails with separate analog/digital domains |
| Switching Freq | 120–205 kHz; dynamically adjustable via I²C to avoid smart key/immobilizer interference |
| Detection Time | <0.5 s to detect WPC-compliant receiver presence via analog ping sequence |
| FOD/PMOD | Resistor-programmable thresholds (42.2 kΩ–100 kΩ) enabling WPC v1.1 FOD and v1.0 PMOD compliance |
| Package | VQFN-48 (RGZ), 7 mm × 7 mm, 0.4-mm pitch; thermally enhanced EPAD for PCB heat sinking |
Pinout & Package
VQFN-48 (RGZ) package with 7-mm × 7-mm body size, 0.4-mm lead pitch, and exposed thermal pad (EPAD) requiring flood-fill GND copper and stitching vias for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COIL_PEAK (1) | Peak detection input | Monitors resonant tank voltage amplitude for coil tuning and overvoltage protection |
| T_SENSE (2) | Thermal shutdown input | Shuts down device when voltage drops below 1.0 V-supports NTC-based thermal monitoring |
| RESET (5) | Active-low reset input | Requires 2-µs pulse width; pulled up externally to 3.3 V via 10–100-kΩ resistor |
| PMB_CLK / PMB_DATA (10/11) | I²C interface | 10-kΩ pull-up required; supports 100/400/1000 kHz clock; slave address 0x14 |
| DPWM_A (12) | Half-bridge PWM output | Drives external gate driver; dead time must be generated externally |
| COMM_A± / COMM_B± (37–40) | Digital demodulation inputs | Differential analog inputs for Rx communication signal; multiplexed per active coil |
| I_SENSE (42) | Input current sense | Accepts 40-mΩ shunt; used with internal 50× gain amp for parasitic loss calculation |
| V_SENSE (45) | Input voltage monitor | Measures Tx power train input voltage for FOD/loss calculations |
Key Features
| Feature | Design Value |
|---|---|
| Triple-coil free positioning | Enables 70-mm × 20-mm charging area by sequentially pinging COIL_1.1/1.2/1.3 and selecting strongest COMM signal |
| WPC v1.1 FOD + v1.0 PMOD | Independent resistor-programmable thresholds (Pins 6/13) with FOD_CAL (Pin 22) compensation for load-dependent loss drift |
| Configurable LED status | Three dedicated outputs (LED_A/B/C) with seven user-selectable modes via resistor on LED_MODE (Pin 44) |
| Active/passive wake-up | EN_PWR (Pin 18) logic level selects analog ping behavior and enables/disables SEPIC converter |
| EMI shield detection | EMI_SHIELD (Pin 21) tied to 3.3 V or GND informs controller whether EMI shield is installed |
Applications
| In-Vehicle Wireless Charging Pad | Qi-Certified Automotive Infotainment Dock |
|---|---|
Use Scenario: Integrated into center console or armrest with three overlapping A6 coils for smartphone/tablet charging without precise alignment. IC Role / Device Role / Timing Role: Transmitter manager executing analog/digital ping sequence, real-time COMM demodulation, and dynamic frequency shift during key fob proximity. Use Value: Enables hands-free charging with 70-mm × 20-mm placement flexibility while maintaining WPC v1.1 compliance and thermal safety. | Use Scenario: Mounted in dashboard-mounted cradle supporting simultaneous charging and USB data passthrough. IC Role / Device Role / Timing Role: Host-controlled power manager coordinating with MCU via I²C to read Tx/Rx stats, start/stop transmission, and adjust operating frequency. Use Value: Provides system-level visibility into charging status, foreign object events, and coil selection-reducing integration effort for OEM HMI reporting. |
| Industrial Mobile Robot Charging Station | Medical Handheld Device Charger |
Use Scenario: Embedded in autonomous mobile robot docking station with metal-rich environment and strict thermal limits. IC Role / Device Role / Timing Role: Dual-detection engine performing continuous FOD/PMOD monitoring using I_SENSE/V_SENSE and T_SENSE inputs. Use Value: Prevents unsafe heating of metallic debris near charging surface while supporting automatic re-alignment via coil switching. | Use Scenario: Used in sealed, fanless medical tablet charger requiring AEC-Q100 reliability and no audible alerts. IC Role / Device Role / Timing Role: Fault-tolerant transmitter managing BUZ_AC/BUZ_DC outputs and LED_A/B/C indicators per clinical workflow states. Use Value: Delivers silent operation (buzzer disabled) and color-coded LED feedback aligned with FDA usability guidelines for hospital environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless power transmitter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ51013BRHLRQ1 | Single-coil WPC v1.1 transmitter; lacks triple-coil sequencing, FOD_CAL, and COIL_SEL pin | Suitable only for fixed-position pads; no free-positioning capability or A6 coil support | Select when cost-sensitive single-coil designs suffice and 70-mm × 20-mm placement flexibility is unnecessary |
| MP-A20 | Standalone A6-compliant transmitter IC; no integrated I²C host interface or LED drivers; requires external microcontroller | Targeted at reference designs with discrete MCU control; higher BOM count and layout complexity | Choose when full firmware control over all parameters is required and external processing resources are available |
Compared with BQ500414QRGZTQ1, BQ51013BRHLRQ1 offers lower integration but reduced feature set, while MP-A20 provides modular flexibility at the expense of increased design effort and component count-making BQ500414QRGZTQ1 optimal for production-ready automotive free-positioning systems.
Availability
BQ500414QRGZTQ1 is available at Aetrix Electronics and suitable for automotive infotainment docks, in-vehicle charging pads, and industrial mobile robot stations requiring stable component supply, AEC-Q100 qualification, and WPC v1.1 compliance.
Supply support for BQ500414QRGZTQ1 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 power solutions with broad automotive qualification expertise.
The BQ500414QRGZTQ1 belongs to TI's automotive-grade wireless power transmitter portfolio, engineered specifically for robust, free-positioning Qi charging in harsh vehicle environments with stringent EMI and thermal constraints.
FAQ
What is the primary function of the BQ500414QRGZTQ1 in a wireless charging system?
The BQ500414QRGZTQ1 serves as the core transmitter manager in WPC v1.1–compliant automotive wireless charging systems. It executes analog and digital pinging across three coils, demodulates receiver feedback via COMM_A±/B± inputs, calculates power loss for FOD/PMOD, and controls DPWM_A output to drive external half-bridge stages. Its integrated features eliminate the need for external microcontrollers in many production designs.
How does the BQ500414QRGZTQ1 support free-positioning functionality?
The BQ500414QRGZTQ1 supports free positioning by sequentially enabling COIL_1.1, COIL_1.2, and COIL_1.3 while monitoring the corresponding COMM feedback signal strength. It selects the coil delivering the strongest demodulated response to optimize coupling-enabling reliable power transfer across a 70-mm × 20-mm surface without precise receiver alignment. This behavior is intrinsic to the BQ500414QRGZTQ1's firmware and requires no host intervention.
Can the BQ500414QRGZTQ1 operate without an external microcontroller?
Yes, the BQ500414QRGZTQ1 can operate autonomously using its internal state machine for basic charging sequences, including analog pinging, receiver identification, power negotiation, and FOD/PMOD monitoring. However, full feature access-including I²C read/write of Tx/Rx stats, frequency shifting, LED mode selection, and fault logging-requires connection to a host controller via PMB_CLK/PMB_DATA pins.
What are the critical external components required for BQ500414QRGZTQ1 operation?
Critical external components for BQ500414QRGZTQ1 include: three A6-specification transmitter coils with matching capacitors; 40-mΩ current sense resistor on I_SENSE; programming resistors on LOSS_THR (Pin 43), LED_MODE (Pin 44), PMOD (Pin 6), and FOD (Pin 13); 10-kΩ pull-up resistors on PMB_CLK/PMB_DATA; and proper decoupling (V33D/V33A bypass caps, BPCAP). The SEPIC converter and half-bridge drivers are also external.
How is thermal protection implemented in the BQ500414QRGZTQ1?
Thermal protection in the BQ500414QRGZTQ1 is implemented via the T_SENSE pin (Pin 2), which triggers immediate shutdown when voltage falls below 1.0 V. This allows direct interfacing with an NTC thermistor configured as a voltage divider-where decreasing temperature raises resistance and lowers T_SENSE voltage. If unused, T_SENSE must be pulled above 1.0 V (e.g., to 3.3 V) to prevent spurious shutdowns. The BQ500414QRGZTQ1 itself operates from –40°C to +85°C ambient.
BQ500414QRGZTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Applications:
- Wireless Power Transmitter
- Current - Supply:
- 52mA
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (7x7)
BQ500414QRGZTQ1 FAQ
1.How can I place an order for BQ500414QRGZTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ500414QRGZTQ1 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 BQ500414QRGZTQ1 reliable?
The price and inventory of BQ500414QRGZTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ500414QRGZTQ1 is usually 5 days.
3.What payment methods are accepted for BQ500414QRGZTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ500414QRGZTQ1 transactions.
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4.How is shipping managed for BQ500414QRGZTQ1?
BQ500414QRGZTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ500414QRGZTQ1 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 BQ500414QRGZTQ1?
For technical support, including BQ500414QRGZTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ500414QRGZTQ1 requirements.
6.How does Aetrix verify that BQ500414QRGZTQ1 is sourced from the original manufacturer or authorized distributors?
All BQ500414QRGZTQ1 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 BQ500414QRGZTQ1 meets industry standards.
7.What is the process for return or replacement of BQ500414QRGZTQ1?
All BQ500414QRGZTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with BQ500414QRGZTQ1, 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 BQ500414QRGZTQ1 part is unused and in its original packaging.
Return procedure for BQ500414QRGZTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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