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Texas Instruments BQ500211ARGZT
- Part No.:
- BQ500211ARGZT
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
BQ500211ARGZT.pdf
- Description:
- IC WIRELESS PWR TX 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:457
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Product details
Overview
BQ500211ARGZT from Texas Instruments is a WPC 1.1–compliant wireless power transmitter manager IC for 5-V systems, implementing intelligent digital control of phase-shifted full-bridge power stages, integrated digital demodulation for receiver communication, and dual-mode foreign object detection (FOD) and parasitic metal object detection (PMOD). It delivers up to 5 W output with peak efficiency >75%, operates from –40°C to 110°C, and targets Qi-certified smartphone charging pads and sealed industrial tools.
For engineers reviewing the BQ500211ARGZT datasheet, BQ500211ARGZT pinout, BQ500211ARGZT application, or BQ500211ARGZT equivalent, key selection considerations include its WPC 1.1 compliance, Dynamic Power Limiting™ (DPL) for USB-limited sources, 48-pin VQFN package thermal performance (RθJA = 28.4°C/W), and integrated 12-bit ADC for real-time input voltage/current sensing (VSENSE, ISENSE).
Technical Context
The BQ500211ARGZT implements closed-loop wireless power regulation via frequency modulation (112–205 kHz) in response to AM-modulated packets from WPC-compliant receivers, using on-chip digital demodulation across two differential input pairs (COMM_A±, COMM_B±). Its control architecture integrates a 12-bit ADC, PWM generators (DPWM_A/DPWM_B), and a low-power supervisor with MSP430 boot interface.
It supports dual safety algorithms-FOD and PMOD-both triggered by real-time efficiency monitoring derived from synchronized VSENSE and ISENSE measurements, with threshold programmability via external resistors on LOSS_THR (pin 43) and optional FOD/PMOD pin separation (pins 16/17). DPL operation is selected via LoPWR (pin 4), enabling 500 mA USB mode or full-power operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| WPC Compliance | WPC 1.1–compliant, supporting Type A5 (magnetic guide) and Type A11 (no guide) transmitters per specification. |
| Output Power | Up to 5 W system output; enables Qi-certified smartphone and handheld device charging. |
| Switching Frequency | 112–205 kHz; dynamically adjusted for closed-loop power regulation without duty cycle change. |
| Operating Temp | –40°C to 110°C; qualified for automotive cabin and industrial embedded environments. |
| Supply Voltage | V33D/V33A: 3.0–3.6 V; dual-rail 3.3-V analog/digital supply with internal LDO support. |
| ADC Resolution | 12-bit; measures VSENSE, ISENSE, TSENSE, LED_MODE with ±2.5 mV INL for precision loss calculation. |
| Thermal Resistance | RθJA = 28.4°C/W (RGZ package); enables high-power density layout with standard 4-layer PCB cooling. |
Pinout & Package
The BQ500211ARGZT is housed in a 48-pin, 7.00 mm × 7.00 mm VQFN (RGZ) package with exposed thermal pad (EPAD) requiring copper flood and stitching vias to internal GND plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DPWM_A / DPWM_B | PWM outputs | Drive complementary half-bridges in phase-shifted full-bridge topology; deadtime must be externally generated. |
| COMM_A± / COMM_B± | Digital demodulation inputs | Differential receiver communication interface; supports robust packet decoding from WPC receivers via AM modulation. |
| V_SENSE / I_SENSE | Analog monitoring inputs | Enable real-time input power calculation (V × I) for FOD/PMOD; require 76.8-kΩ:10-kΩ divider and 20-mΩ sense resistor. |
| LOSS_THR | Threshold programming input | Sets FOD/PMOD loss detection threshold (250–850 mW) via 1% resistor; default 56.2 kΩ = 400 mW. |
| LoPWR | Dynamic Power Limiting control | Selects USB 500 mA mode (pulled to GND) or full-power mode (pulled to 3.3 V); mandatory termination required. |
| FOD / PMOD | Safety algorithm select outputs | Allow independent threshold configuration when connected to LOSS_THR; open by default for shared threshold operation. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Demodulation Engine | On-chip AM packet decoder eliminates external analog front-end components and reduces BOM cost and board area. |
| Dynamic Power Limiting™ | Real-time input droop detection and power throttling enables reliable operation from USB 5-V/500-mA ports without external supervision. |
| Programmable Safety Thresholds | LOSS_THR and LED_MODE pins use resistor-based binning (11 bins) for field-tunable FOD/PMOD sensitivity and LED status indication. |
| Integrated Thermal Shutdown | T_SENSE (pin 2) triggers immediate shutdown below 1.0 V, supporting NTC-based overtemperature protection with no external comparator. |
| LED Status Interface | MSP_RST/LED_A and MSP_MISO/LED_B drive dual LEDs directly via 470-Ω resistors; four user-selectable blink patterns indicate charge state and faults. |
Applications
| Smartphone Charging Pad | Hermetically Sealed Tool Charger |
|---|---|
Use Scenario: Tabletop Qi-certified charger for consumer smartphones and wearables. IC Role / Device Role / Timing Role: Transmitter manager controlling full-bridge power stage, demodulating receiver packets, and enforcing WPC 1.1 safety protocols. Use Value: Enables certified interoperability with >90% of Qi-enabled devices while maintaining <500 mW unaccounted loss during FOD testing. | Use Scenario: Intrinsically safe charging station for medical or explosive-environment tools with sealed enclosures. IC Role / Device Role / Timing Role: Isolated power controller managing resonant coupling through non-conductive housing; uses PMOD to detect metallic contaminants inside sealed units. Use Value: Eliminates need for mechanical alignment aids or secondary sensors-detection occurs entirely via RF efficiency monitoring at 112–205 kHz. |
| Automotive In-Car Transmitter | Industrial Tabletop Surface |
Use Scenario: Integrated wireless charging pad in vehicle center console with USB-powered input. IC Role / Device Role / Timing Role: DPL-enabled transmitter managing variable 5-V input from vehicle USB port under load transients and temperature drift. Use Value: Prevents brownout-induced system resets by dynamically limiting output power when input voltage drops below 4.75 V. | Use Scenario: Multi-device charging surface for factory floor tablets and handheld HMIs. IC Role / Device Role / Timing Role: Multi-zone transmitter controller coordinating ping sequencing and power handoff between adjacent coils. Use Value: Supports concurrent charging of up to three devices using time-multiplexed coil activation and shared FOD/PMOD monitoring logic. |
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 |
|---|---|---|---|
| BQ500212ARGZT | Pin-compatible upgrade with enhanced ESD rating (±8 kV HBM), identical pinout and firmware interface. | Same WPC 1.1 compliance and DPL functionality; optimized for higher-reliability automotive interiors. | Select for new designs requiring extended lifecycle support and improved robustness against electrostatic discharge in assembly or end-use. |
| MP-A21 | Discrete analog controller with external MCU; lacks integrated digital demodulation and requires external ADC/PWM drivers. | Supports custom modulation schemes beyond WPC but demands significant firmware development and safety validation effort. | Select only when proprietary communication protocol or non-WPC frequency bands (e.g., 13.56 MHz) are required-adds design complexity and time-to-market risk. |
Compared with BQ500211ARGZT, BQ500212ARGZT offers drop-in ESD hardening without layout changes, while MP-A21 trades integration for flexibility-requiring external signal conditioning and increasing BOM count by ≥7 components for equivalent functionality.
Availability
BQ500211ARGZT is available at Aetrix Electronics and suitable for Qi-certified smartphone charging pads, hermetically sealed industrial tool chargers, and automotive in-cabin wireless power systems requiring stable component supply and long-term industrial availability.
Supply support for BQ500211ARGZT 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, longevity, and design-in support.
The BQ500211ARGZT belongs to TI's Wireless Power Transmitter family, engineered specifically for WPC-compliant 5-V systems where safety-critical foreign object detection, USB-limited source compatibility, and minimal external component count are primary design requirements.
FAQ
What is the recommended operating temperature range for the BQ500211ARGZT?
The BQ500211ARGZT is specified to operate from –40°C to +110°C ambient temperature. This range is validated per JEDEC JESD22-A104 and supports deployment in automotive cabin environments, industrial enclosures, and outdoor charging surfaces. The device's thermal metrics-including RθJA = 28.4°C/W and RθJB = 5.4°C/W-enable reliable operation within this range when mounted on a 4-layer PCB with proper EPAD grounding. BQ500211ARGZT thermal shutdown activates only if junction temperature exceeds 110°C, which is monitored internally.
Does the BQ500211ARGZT support both WPC Type A5 and Type A11 transmitter configurations?
Yes, the BQ500211ARGZT natively supports both WPC Type A5 (with magnetic positioning guide) and Type A11 (no magnetic guide) transmitter topologies per WPC 1.1 specification. Its firmware and control loop automatically adapt ping behavior, alignment tolerance, and power ramp profiles based on receiver ID packet content. No hardware modification or configuration register change is needed-the distinction is handled transparently during handshake. BQ500211ARGZT achieves full interoperability with Qi-certified receivers in either mode.
How does Dynamic Power Limiting™ (DPL) function on the BQ500211ARGZT?
Dynamic Power Limiting™ on the BQ500211ARGZT monitors input voltage droop in real time and reduces output power to prevent brownout when sourced from current-limited supplies like USB ports. When LoPWR (pin 4) is pulled to GND, it enters 500 mA USB mode; when pulled to 3.3 V, it operates at full capability. DPL activation is indicated via LED blink pattern (per LED_MODE setting) and halts power transfer only if input collapse persists beyond 100 ms. BQ500211ARGZT maintains regulation accuracy within ±5% across input voltage swings from 4.5 V to 5.5 V.
Can the BQ500211ARGZT be used without an external microcontroller?
Yes, the BQ500211ARGZT operates autonomously without an external microcontroller. Its integrated state machine handles WPC-compliant ping, handshake, power negotiation, FOD/PMOD monitoring, and fault recovery. External MCU interaction is optional-used only for advanced customization via I²C (PMB_CLK/PMB_DATA) or MSP430 boot interface (MSP_CLK/MSP_MOSI/etc.). All core wireless power functions execute independently. BQ500211ARGZT ships with factory-programmed firmware that requires no host intervention for basic Qi operation.
What is the purpose of the LOSS_THR pin on the BQ500211ARGZT?
The LOSS_THR pin (pin 43) on the BQ500211ARGZT sets the power loss threshold for both Foreign Object Detection (FOD) and Parasitic Metal Object Detection (PMOD) algorithms. A single 1% resistor between LOSS_THR and GND selects one of 11 predefined thresholds (250–850 mW) per Table 2 in the datasheet. Default 56.2 kΩ configures 400 mW-validated against WPC-standard test objects. BQ500211ARGZT samples this voltage at startup and applies it to real-time efficiency calculations using VSENSE and ISENSE data.
BQ500211ARGZT 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 ~ 110°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (7x7)
BQ500211ARGZT FAQ
1.How can I place an order for BQ500211ARGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ500211ARGZT 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 BQ500211ARGZT reliable?
The price and inventory of BQ500211ARGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ500211ARGZT is usually 5 days.
3.What payment methods are accepted for BQ500211ARGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ500211ARGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ500211ARGZT?
BQ500211ARGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ500211ARGZT 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 BQ500211ARGZT?
For technical support, including BQ500211ARGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ500211ARGZT requirements.
6.How does Aetrix verify that BQ500211ARGZT is sourced from the original manufacturer or authorized distributors?
All BQ500211ARGZT 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 BQ500211ARGZT meets industry standards.
7.What is the process for return or replacement of BQ500211ARGZT?
All BQ500211ARGZT units undergo pre-shipment inspection (PSI). If there is an issue with BQ500211ARGZT, 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 BQ500211ARGZT part is unused and in its original packaging.
Return procedure for BQ500211ARGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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