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Renesas P9028AC-0NBGI8
- Part No.:
- P9028AC-0NBGI8
- Manufacturer:
- Renesas
- Category:
- Power Management - Specialized
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
P9028AC-0NBGI8.pdf
- Description:
- IC WIRELESS RECEIVER 32VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:3,041
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Product details
Overview
P9028AC-0NBGI8 from Integrated Device Technology is a dual-mode WPC v1.1.2-compliant and PMA v1.0-compatible wireless power receiver IC with integrated synchronous full-bridge rectifier, 5V/1A LDO regulator, programmable foreign object detection (FOD), and I²C interface for real-time VRECT/IOUT monitoring - designed for mobile device charging applications requiring up to 5W delivered power.
For engineers reviewing the P9028AC-0NBGI8 datasheet, P9028AC-0NBGI8 pinout, P9028AC-0NBGI8 application, or P9028AC-0NBGI8 equivalent, key selection considerations include dual-mode protocol auto-detection, FOD programmability via external resistors and I²C, thermal shutdown at 150°C, 5V LDO output current limit set by RLIM resistor, and compatibility with both WLCSP-36 and TQFN-32 packages.
Technical Context
The P9028AC-0NBGI8 implements closed-loop power transfer control using real-time ADC sampling of VRECT and output current to dynamically adjust transmitter frequency-lowering it under heavy load to maintain resonance and raising it when VRECT exceeds target. It supports two distinct modulation schemes: WPC's 2-kbps digital backscatter and PMA's variable-rate AC modulation, both executed via internal ACM1/ACM2 switches controlling external tank capacitors.
Its advanced FOD algorithm compares measured received power against a reference curve derived from OTP-programmable settings (up to 10 non-volatile configurations selected by FOD1 resistor) plus ±300 mW offset (set by FOD2 resistor), enabling system-specific calibration across no-load to full-load conditions while rejecting false positives from coil shielding or case materials.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wireless Standard Support | WPC v1.1.2 compliant and PMA v1.0 compatible - enables automatic TX-type detection and protocol selection without firmware intervention. |
| Output Regulation | 5.04–5.56 V @ 0–1000 mA - tightly regulated LDO output suitable for direct connection to battery charge management ICs. |
| FOD Programmability | Configurable via I²C registers or OTP bits (10 settings) + FOD1/FOD2 external resistors - allows precise tuning to system-specific losses and safety margins. |
| Thermal Protection | 150°C shutdown / 130°C recovery - prevents thermal runaway during sustained high-power operation in compact mobile enclosures. |
| I²C Interface | Standard-mode (0–400 kHz), 60 pF input capacitance - provides read access to VRECT, IOUT, and switching frequency for host MCU telemetry and diagnostics. |
| Rectifier Efficiency Mode | Full-synchronous above 300 mA, half-synchronous below - optimizes conduction loss vs. gate drive overhead across full load range. |
| Overvoltage Clamp | 12.8–13.8 V threshold with 1.5 V hysteresis - activates internal FETs to short tank capacitance and force Tx gain collapse before LDO damage occurs. |
Pinout & Package
Package: TQFN-32 (5 mm × 5 mm, exposed paddle). Pin count: 32. Thermal performance optimized via 5×5 matrix of PTH vias connecting EP to internal/external ground planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 / AC2 | AC input pair | Accept resonant tank AC voltage from RX coil; feed full-wave synchronous rectifier stage. |
| VRECT | Rectified output | DC output of internal bridge rectifier; supplies LDO input and enables UVLO/OVP protection logic. |
| OUT | LDO regulated output | 5V/1A power rail for downstream battery charger or system load; requires 1 µF ceramic capacitor to PGND. |
| RLIM | Current limit programming | Resistor-to-ground sets ILIM per ILIM = 45 kΩ / RLIM; values <25 kΩ clamp output to 2 A. |
| SCL / SDA | I²C interface | Provide host MCU access to real-time VRECT, IOUT, and frequency data; open-drain, require pull-ups. |
| STAT | Status indicator | Open-drain output pulled low during active power transfer - used for LED signaling or host interrupt. |
| INT | Interrupt output | Open-drain signal asserted low on OC/OV/OT fault - triggers immediate host response without polling. |
| EN | Active-low enable | Pulling high suspends operation and sends EOP packet; internal pull-down ensures default active state. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode protocol auto-detection | Eliminates need for manual mode selection or external configuration - detects WPC or PMA TX type at startup and configures modulation accordingly. |
| Programmable FOD with OTP storage | Supports 10 factory-programmed FOD curves selectable via FOD1 resistor, enabling one hardware design to meet safety requirements across multiple end products. |
| Integrated 5V/1A LDO with tracking | Maintains optimal VRECT target (5.45–7 V) based on load current to maximize overall system efficiency and transient response. |
| Self-driven synchronous rectifier | Reduces conduction loss by replacing body diodes with actively controlled NMOS switches - improves efficiency by >15% at 1A load vs. passive rectification. |
| Multi-level protection architecture | Combines overvoltage clamping, overcurrent limiting, thermal shutdown, and open-drain fault reporting to ensure safe operation under fault conditions. |
Applications
| Smartphone Wireless Charging | Tablet Power Reception |
|---|---|
|
Use Scenario: Integration into slim smartphone PCBs where space constraints demand minimal external components and high integration density. IC Role / Device Role / Timing Role: Primary wireless power receiver managing AC-to-DC conversion, closed-loop power control, and WPC/PMA protocol negotiation. Use Value: Enables 5W charging with single-chip solution, eliminating discrete rectifier, LDO, and communication controller - reducing BOM count by ≥7 parts. |
Use Scenario: Implementation in mid-size tablets requiring robust thermal management and reliable foreign object detection across varied usage environments. IC Role / Device Role / Timing Role: Dual-mode receiver IC providing adaptive VRECT regulation and programmable FOD calibrated for large-area coil assemblies. Use Value: Delivers stable 5V/1A output while maintaining >70% system efficiency at full load, validated against IDTP9235 (WPC) and PMA transmitters. |
| Portable DSC/DVC Charging | Handheld Medical Device Power |
|
Use Scenario: Embedded in digital still/video cameras needing fast, cable-free recharging without compromising mechanical sealing or EMI integrity. IC Role / Device Role / Timing Role: Wireless power interface IC handling analog ping response, digital handshake, and real-time power adjustment via I²C telemetry. Use Value: Supports WPC-compliant "ping" phase with internal capacitor-less LDO, enabling reliable startup even with weak coupling or misalignment. |
Use Scenario: Deployment in certified medical handhelds where safety-critical FOD accuracy and thermal fault reporting are mandatory. IC Role / Device Role / Timing Role: Safety-monitored wireless receiver providing dual-fault reporting (INT + STAT), OTP-configured FOD, and 150°C thermal shutdown. Use Value: Meets IEC 62368-1 requirements through hardware-enforced overtemperature cutoff and programmable metallic object detection with ±300 mW offset tuning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless power receiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP-A21 (NXP Semiconductors) | Single-mode WPC-only; lacks PMA support and OTP-based FOD calibration; uses SPI instead of I²C. | Restricted to Qi-certified ecosystems; not suitable for PMA infrastructure or multi-standard deployments. | Select MP-A21 only if targeting WPC-only markets and accepting reduced FOD flexibility. |
| BQ51222 (Texas Instruments) | WPC v1.2 compliant; includes integrated 5V/1.5A buck converter (not LDO); supports higher 7.5W output; no PMA mode. | Targets higher-power smartphones; requires different thermal layout due to buck topology and higher peak currents. | Choose BQ51222 when >5W delivery or buck-regulated output is required, but note absence of PMA compatibility. |
Compared with P9028AC-0NBGI8, MP-A21 offers simpler WPC-only integration but forfeits dual-mode capability and field-tunable FOD, while BQ51222 delivers higher power with buck regulation yet eliminates PMA support and increases board area due to external inductor requirements.
Availability
P9028AC-0NBGI8 is available at Aetrix Electronics and suitable for smartphone wireless charging, tablet power reception, portable DSC/DVC charging, handheld medical device power, and industrial handheld terminals requiring stable component supply and long-term lifecycle support.
Supply support for P9028AC-0NBGI8 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
Integrated Device Technology (IDT), now part of Renesas Electronics, designs high-performance timing, memory interface, RF, and power management semiconductors for communications, computing, and consumer applications.
The P9028AC-0NBGI8 belongs to IDT's wireless power receiver product line, engineered specifically for dual-mode (WPC + PMA) mobile charging systems demanding high integration, programmable safety features, and minimal external component count.
FAQ
What wireless charging standards does the P9028AC-0NBGI8 support?
The P9028AC-0NBGI8 supports WPC v1.1.2 compliance and PMA v1.0 compatibility. It automatically detects the transmitter type and initiates the appropriate AC modulation protocol - WPC digital backscatter or PMA variable-rate modulation - without external configuration. This dual-mode capability is implemented entirely in hardware and requires no firmware intervention during startup or power transfer.
How is foreign object detection (FOD) configured on the P9028AC-0NBGI8?
FOD on the P9028AC-0NBGI8 is configured via two methods: (1) OTP programming of up to 10 non-volatile FOD curves selected by the FOD1 resistor value, and (2) fine-tuning via FOD2 resistor for ±300 mW offset. These settings are applied during system calibration and allow precise matching to coil losses, shielding, and case materials across full load range - ensuring reliable metallic object detection without false positives.
What is the function of the RLIM pin on the P9028AC-0NBGI8?
The RLIM pin on the P9028AC-0NBGI8 sets the output current limit of the integrated 5V LDO using an external resistor to ground. The relationship is ILIM = 45 kΩ / RLIM. For example, a 30 kΩ resistor yields ~1.5 A limit. RLIM values below 25 kΩ fix the limit at 2 A, and values above 60 kΩ are not recommended due to reduced accuracy and stability in the current-sense circuitry of the P9028AC-0NBGI8.
Does the P9028AC-0NBGI8 include built-in protection features?
Yes, the P9028AC-0NBGI8 integrates overvoltage protection (12.8–13.8 V clamp), overcurrent limiting (programmable via RLIM), thermal shutdown (150°C trip, 130°C recovery), and open-drain fault reporting via INT and STAT pins. When any fault condition occurs, the P9028AC-0NBGI8 disables the LDO, sends appropriate EOP/EOC packets to the transmitter, and asserts the corresponding output pin to alert the host system.
What package options are available for the P9028AC-0NBGI8?
The P9028AC-0NBGI8 is offered in two package variants: TQFN-32 (5 mm × 5 mm, exposed paddle) and WLCSP-36 (3.06 mm × 2.9 mm, 6×6 ball array). The TQFN version includes dedicated SNS pin for remote output sensing and is optimized for thermal performance using a 5×5 via matrix under the EP. The WLCSP variant targets ultra-compact mobile designs where footprint minimization is critical.
P9028AC-0NBGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Wireless Power Receiver
- Current - Supply:
- 16mA
- Voltage - Supply:
- -
- Operating Temperature:
- 0°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VFQFPN (5x5)
P9028AC-0NBGI8 FAQ
1.How can I place an order for P9028AC-0NBGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for P9028AC-0NBGI8 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 P9028AC-0NBGI8 reliable?
The price and inventory of P9028AC-0NBGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P9028AC-0NBGI8 is usually 5 days.
3.What payment methods are accepted for P9028AC-0NBGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P9028AC-0NBGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P9028AC-0NBGI8?
P9028AC-0NBGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P9028AC-0NBGI8 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 P9028AC-0NBGI8?
For technical support, including P9028AC-0NBGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P9028AC-0NBGI8 requirements.
6.How does Aetrix verify that P9028AC-0NBGI8 is sourced from the original manufacturer or authorized distributors?
All P9028AC-0NBGI8 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 P9028AC-0NBGI8 meets industry standards.
7.What is the process for return or replacement of P9028AC-0NBGI8?
All P9028AC-0NBGI8 units undergo pre-shipment inspection (PSI). If there is an issue with P9028AC-0NBGI8, 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 P9028AC-0NBGI8 part is unused and in its original packaging.
Return procedure for P9028AC-0NBGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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