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Texas Instruments BQ500414QRGZRQ1
- Part No.:
- BQ500414QRGZRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
BQ500414QRGZRQ1.pdf
- Description:
- IC WIRELESS TRANSMITTER 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,237
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Product details
Overview
BQ500414QRGZRQ1 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. It operates across –40°C to 85°C in vehicles requiring robust, certified wireless charging for smartphones and accessories.
For engineers reviewing the BQ500414QRGZRQ1 datasheet, BQ500414QRGZRQ1 pinout, BQ500414QRGZRQ1 application, or BQ500414QRGZRQ1 equivalent, key selection factors include its triple-coil A6 Tx architecture, WPC v1.1 FOD compliance, programmable loss thresholds via external resistors, and integrated thermal shutdown via T_SENSE with 1.0-V trip point.
Technical Context
The BQ500414QRGZRQ1 implements a digital ping-based receiver detection sequence across three independent coil drive paths (COIL_1.1/1.2/1.3), each synchronized with analog COMM signal demodulation (COMM_A±/B±) for real-time Rx packet feedback. Its internal 12-bit ADC monitors V_SENSE, I_SENSE, LOSS_THR, LED_MODE, and T_SENSE to compute parasitic loss and enforce WPC v1.1 FOD limits.
It supports both active wake-up (via EN_PWR low) and passive wake-up (EN_PWR high + I²C SHUTDOWN disable), enabling integration with proximity sensors. The device uses fixed I²C slave address 0x14 (20 decimal), operates at 100–1000 kHz clock rates, and drives DPWM_A with externally generated dead time for half-bridge control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | –40°C to +85°C - Qualified for under-dash automotive environments without derating. |
| Supply Voltage (V33D/V33A) | 3.0 V to 3.6 V - Dual 3.3-V rails with separate analog/digital regulation and decoupling requirements. |
| Switching Frequency | 120 kHz to 205 kHz - Programmable Tx frequency range compliant with WPC A6 specification. |
| FOD/PMOD Threshold Control | Resistor-programmable via LOSS_THR (pin 43) and PMOD/FOD pins - Enables precise tuning of 300–850 mW loss thresholds per WPC v1.1. |
| T_SENSE Shutdown Threshold | 1.0 V - Hard shutdown trigger for external NTC-based thermal protection; pin must be pulled high if unused. |
| I²C Slave Address | 0x14 (20 decimal) - Fixed hardware address supporting standard-mode (100 kHz), fast-mode (400 kHz), and fast-mode+ (1 MHz) operation. |
| Package | VQFN-48 (7 mm × 7 mm) - Thermally enhanced exposed pad for automotive thermal management; RθJB = 4.3°C/W. |
Pinout & Package
Package: 48-pin VQFN (RGZ), 7 mm × 7 mm, thermally enhanced EPAD. Designed for automotive PCB layouts with strict EMI shielding requirements (EMI_SHIELD pin 21).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COIL_PEAK (1) | Peak detect input | Monitors resonant tank voltage for overvoltage protection and coil tuning. |
| T_SENSE (2) | Thermal shutdown input | 1.0-V threshold triggers immediate shutdown; used with NTC voltage divider for thermal safety. |
| RESET (5) | Active-low reset input | 2-µs pulse required; 10–100 kΩ pull-up to V33D ensures reliable power-on initialization. |
| DPWM_A (12) | Half-bridge PWM output | Drives external gate driver; dead time must be added externally to prevent shoot-through. |
| COMM_A± / COMM_B± (37–40) | Digital demodulation inputs | Dual differential receivers for WPC-compliant Rx communication; common-mode range –0.15 V to 1.631 V. |
| I_SENSE (42) | Transmitter current sense | Accepts 40-mΩ shunt + 50× gain amp output for real-time input current measurement. |
| V_SENSE (45) | Input voltage monitor | Measures SEPIC converter output for FOD loss calculation and system efficiency tracking. |
| EN_PWR (18) | Wake-up mode select | Low = active wake-up (auto-ping); high = passive wake-up (I²C-controlled activation). |
Key Features
| Feature | Design Value |
|---|---|
| Triple-coil free positioning | Enables 70-mm × 20-mm charging area using sequential COIL_1.1/1.2/1.3 activation and COMM-signal strength matching. |
| WPC v1.1 FOD + WPC v1.0 PMOD | Independent resistor-programmable thresholds (pins 6, 13, 43) allow simultaneous compliance with both standards and selective disablement. |
| Integrated 12-bit ADC | Simultaneously samples V_SENSE, I_SENSE, T_SENSE, LOSS_THR, and LED_MODE for closed-loop loss estimation and fault classification. |
| LED status indication | Three dedicated outputs (LED_A/B/C) with 7 programmable modes via LED_MODE (pin 44) resistor for user feedback without MCU intervention. |
| AEC-Q100 Grade 2 qualification | Validated for automotive use with operating temperature range –40°C to +105°C junction (TA ≤ 85°C ambient). |
Applications
| In-Car Wireless Charging Pad | Automotive Infotainment Console |
|---|---|
Use Scenario: Integrated Qi charging surface embedded in center console or armrest, powering smartphones during navigation or hands-free calling. IC Role / Device Role / Timing Role: Transmitter manager controlling three overlapping A6 coils, performing real-time FOD/PMOD checks, and communicating with host MCU via I²C. Use Value: Eliminates misalignment issues via automatic coil selection; meets WPC v1.1 safety requirements for metal object heating in confined vehicle spaces. |
Use Scenario: Wireless charging module co-located with display, audio, and Bluetooth subsystems in premium vehicle infotainment head units. IC Role / Device Role / Timing Role: Digital wireless power controller managing power transfer while coordinating with CAN/LIN bus for system-level status reporting and thermal event escalation. Use Value: Reduces EMI interference through EMI_SHIELD pin control and optimized COMM signal routing; supports I²C frequency shifting to avoid smart key RF conflicts. |
| Vehicle-Mounted Tablet Docking Station | Commercial Fleet Telematics Terminal |
Use Scenario: Ruggedized tablet dock in delivery vans or service vehicles, providing continuous charging during data entry and GPS tracking. IC Role / Device Role / Timing Role: Robust transmitter IC with thermal shutdown (T_SENSE), buzzer alerts (BUZ_AC/DC), and LED status (LED_A/B/C) for unattended operation. Use Value: Maintains charging under wide input voltage (6–16 V) and temperature swings; programmable LED modes provide clear fault diagnostics without display dependency. |
Use Scenario: Wireless charging integrated into telematics gateway units deployed across heavy-duty truck fleets, requiring long-term reliability and field-serviceability. IC Role / Device Role / Timing Role: Automotive-grade wireless power manager with traceable sourcing, lifecycle coordination, and BOM continuity for industrial OEM programs. Use Value: Supports scheduled delivery planning and volume procurement assistance; AEC-Q100 qualification ensures zero field failures in harsh vibration/thermal cycling environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless power transmitter manager applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ500412QRGZRQ1 | Single-coil variant; lacks COIL_1.2/1.3 outputs and multiplexed COMM path; identical FOD/PMOD, I²C, and thermal features. | Suitable only for fixed-position A6 single-coil pads; not usable in free-positioning designs requiring >1 coil. | Select BQ500412QRGZRQ1 only when mechanical constraints limit to one coil and cost reduction is prioritized over placement flexibility. |
| MP-A20 (from MediaTek) | WPC v1.2–compliant; includes built-in 3.3-V LDOs and integrated gate drivers; no external SEPIC support; different pinout and I²C register map. | Targets consumer electronics; lacks AEC-Q100 qualification, automotive temp range, and EMI_SHIELD functionality. | Choose MP-A20 only for non-automotive, cost-sensitive consumer chargers where automotive qualification and thermal robustness are not required. |
Compared with BQ500412QRGZRQ1 and MP-A20, the BQ500414QRGZRQ1 uniquely delivers triple-coil free positioning within AEC-Q100 constraints, enabling flexible receiver placement in automotive interiors while maintaining full WPC v1.1 compliance and thermal safety certification.
Availability
BQ500414QRGZRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, in-vehicle wireless charging pads, and commercial fleet telematics terminals requiring stable component supply across extended product lifecycles.
Supply support for BQ500414QRGZRQ1 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 focused on analog, embedded processing, and wireless technologies, with deep expertise in automotive-grade power management and connectivity solutions.
The BQ500414QRGZRQ1 belongs to TI's automotive wireless power portfolio, designed specifically to enable WPC-compliant, AEC-Q100–qualified Qi charging systems for vehicles-addressing EMI, thermal, safety, and mechanical alignment challenges in constrained automotive spaces.
FAQ
What is the primary function of the BQ500414QRGZRQ1 in a wireless charging system?
The BQ500414QRGZRQ1 serves as the core digital transmitter manager in automotive Qi-compliant wireless charging systems. It controls three independent A6-type coils, performs real-time foreign object detection (FOD) and parasitic metal object detection (PMOD), demodulates receiver communication signals, and interfaces with host controllers via I²C. Its design enables free-positioning charging across a 70-mm × 20-mm area while meeting WPC v1.1 and AEC-Q100 requirements.
How does the BQ500414QRGZRQ1 implement foreign object detection (FOD)?
The BQ500414QRGZRQ1 implements FOD by continuously calculating power loss using measured input voltage (V_SENSE), input current (I_SENSE), and reported receiver power (via COMM demodulation). Loss thresholds are set via external resistors on pins 13 (FOD) and 43 (LOSS_THR), enabling compliance with WPC v1.1's 400-mW minimum allowable loss margin. If unaccounted loss exceeds the programmed threshold, the BQ500414QRGZRQ1 halts power transfer and asserts fault indicators.
Can the BQ500414QRGZRQ1 operate without an external SEPIC converter?
Yes, the BQ500414QRGZRQ1 can operate without an external SEPIC converter. Its EN_PWR pin (18) supports both active wake-up (SEPIC enabled) and passive wake-up (SEPIC disabled) modes. When EN_PWR is held high, the device enters passive mode and waits for an I²C SHUTDOWN command to be cleared before initiating ping sequences-allowing direct 12-V battery connection or alternative front-end topologies. The "Without SEPIC" efficiency curve in the datasheet confirms this capability.
What is the role of the T_SENSE pin (pin 2) on the BQ500414QRGZRQ1?
The T_SENSE pin (pin 2) on the BQ500414QRGZRQ1 provides a hard thermal shutdown input with a fixed 1.0-V threshold. When voltage drops below 1.0 V-typically driven by an NTC thermistor voltage divider-the BQ500414QRGZRQ1 immediately disables power transfer and asserts fault status. If unused, T_SENSE must be pulled above 1.0 V (e.g., to V33A) to prevent spurious shutdown; leaving it floating causes erratic behavior.
Does the BQ500414QRGZRQ1 support multiple LED indication modes, and how are they configured?
Yes, the BQ500414QRGZRQ1 supports seven distinct LED indication modes via LED_A (pin 7), LED_B (pin 8), and LED_C (pin 9). Mode selection is resistor-programmed on LED_MODE (pin 44): values from 42.2 kΩ to 100 kΩ select patterns including steady-on, slow blink (0.625 Hz), fast blink (2.5 Hz), and combinations indicating power transfer, charge completion, standby, fault, or FOD warning-enabling intuitive user feedback without host MCU involvement.
BQ500414QRGZRQ1 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)
BQ500414QRGZRQ1 FAQ
1.How can I place an order for BQ500414QRGZRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ500414QRGZRQ1 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 BQ500414QRGZRQ1 reliable?
The price and inventory of BQ500414QRGZRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ500414QRGZRQ1 is usually 5 days.
3.What payment methods are accepted for BQ500414QRGZRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ500414QRGZRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ500414QRGZRQ1?
BQ500414QRGZRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ500414QRGZRQ1 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 BQ500414QRGZRQ1?
For technical support, including BQ500414QRGZRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ500414QRGZRQ1 requirements.
6.How does Aetrix verify that BQ500414QRGZRQ1 is sourced from the original manufacturer or authorized distributors?
All BQ500414QRGZRQ1 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 BQ500414QRGZRQ1 meets industry standards.
7.What is the process for return or replacement of BQ500414QRGZRQ1?
All BQ500414QRGZRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with BQ500414QRGZRQ1, 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 BQ500414QRGZRQ1 part is unused and in its original packaging.
Return procedure for BQ500414QRGZRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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