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Renesas P9028AC-0NBGI
- Part No.:
- P9028AC-0NBGI
- Manufacturer:
- Renesas
- Category:
- Power Management - Specialized
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
P9028AC-0NBGI.pdf
- Description:
- IC WIRELESS RECEIVER 32VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:3,507
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Product details
Overview
P9028AC-0NBGI from Integrated Device Technology is a dual-mode WPC v1.1.2-compliant and PMA v1.0-compatible wireless power receiver IC delivering regulated 5V/1A output via integrated synchronous full-bridge rectifier and LDO. It features programmable foreign object detection (FOD) via I²C or external resistors, closed-loop power transfer control, and over-temperature/voltage/current protection - deployed in mobile phone and tablet wireless charging receivers.
For engineers reviewing the P9028AC-0NBGI datasheet, P9028AC-0NBGI pinout, P9028AC-0NBGI application, or P9028AC-0NBGI equivalent, key selection considerations include dual-mode protocol auto-detection, FOD programmability, 5V LDO current limit setting via RLIM resistor, thermal shutdown at 150°C, and compatibility with both WLCSP-36 and TQFN-32 packages.
Technical Context
The P9028AC-0NBGI implements dual-mode operation by automatically detecting transmitter type (WPC or PMA) and initiating the corresponding AC modulation communication protocol. Its internal control loop samples VRECT and output current via multi-channel ADC to dynamically adjust transmitter frequency for optimal efficiency across load conditions.
It integrates a synchronous full-bridge rectifier with bootstrap-driven high-side NMOS switches (BST1/BST2), programmable current limiting (ILIM = 45 kΩ / RLIM), and advanced FOD using configurable OTP or volatile I²C registers. The device supports open-drain STAT and INT outputs for real-time status and fault indication without external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wireless Standard | WPC v1.1.2 compliant and PMA v1.0 compatible - enables interoperability with Qi-certified and Power Matters Alliance charging pads. |
| Output Voltage | 5.04–5.56 V regulated at OUT pin - maintains stable 5V supply for battery charging ICs under 0–1 A load. |
| Max Output Current | 1.95 A (typical 1.6 A) with RLIM = 30 kΩ - sets safe LDO current limit for thermal management in compact mobile PCB layouts. |
| FOD Programmability | I²C-accessible volatile settings + 10 OTP-configurable profiles - allows system-level tuning of foreign object detection sensitivity per coil/shielding design. |
| Thermal Shutdown | 150°C activation / 130°C hysteresis - disables LDO and sends EOP packet to prevent damage during sustained high-power operation. |
| Input Rectifier Voltage Range | VRECT target steps: 7 V (light load), 6.3 V, 5.5 V, 5.45 V (≥40% ISET) - dynamically optimizes rectifier efficiency and transient response across output current range. |
| I²C Interface | Standard-mode (0–400 kHz), 60 pF input capacitance, 0.4 V/1.4 V logic thresholds - supports host MCU monitoring of VRECT, IOUT, and switching frequency without level-shifting. |
Pinout & Package
Package: TQFN-32 (5 mm × 5 mm, exposed paddle). Pin count and function mapping validated per datasheet Rev 1.0.3, pages 11–13.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT | LDO regulated output | Delivers 5V/1A to downstream charger IC; requires 1 µF ceramic capacitor to PGND for stability. |
| RLIM | Current limit programming input | Resistor-to-ground sets ILIM (1.15–1.95 A); values <25 kΩ clamp output at 2 A. |
| STAT | Open-drain status indicator | Low = active power transfer; used for LED enable or host MCU interrupt without external pull-up. |
| INT | Open-drain fault interrupt | Low = OC/OV/OT event occurred; triggers host MCU fault handling before thermal shutdown. |
| EN | Active-low enable | Pulled high → suspends operation and sends WPC EOP (0x04) or PMA EOC; internal pull-down ensures default active state. |
| TEOP | External over-temperature input | Pulled high → forces over-temperature EOP (0x03) or PMA EOC; internal pull-down avoids false triggering. |
| AC1 / AC2 | AC input to full-bridge rectifier | Accept resonant tank AC waveform (up to 2 ARMS); connected directly to RX coil and matching capacitor. |
| VRECT | Rectified DC output | Feeds LDO input; voltage target adjusted dynamically (5.45–7 V) based on load for peak efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode protocol auto-detection | Identifies WPC or PMA transmitters at startup and selects optimal modulation scheme - eliminates need for manual mode selection or dual-coil designs. |
| Programmable FOD via I²C + OTP | Supports 10 non-volatile system-specific FOD profiles selected by FOD1 resistor, plus ±300 mW offset via FOD2 - enables precise calibration against coil losses and shielding effects. |
| Integrated synchronous full-bridge rectifier | Uses self-driven NMOS switches with BST1/BST2 bootstrap outputs - achieves >85% system efficiency at 5 W output without external gate drivers. |
| 5V @ 1A LDO with tracking control | Regulates OUT while dynamically adjusting VRECT target per load current - reduces dropout loss and improves thermal margin in space-constrained mobile PCBs. |
| Closed-loop TX-RX power control | Samples VRECT and IOUT via on-chip ADC, then sends error packets to adjust transmitter frequency - maintains stable power delivery despite coil misalignment or foreign metal presence. |
Applications
| Smartphone Wireless Charging | Tablet Wireless Charging |
|---|---|
|
Use Scenario: Integration into slim-profile smartphones requiring compact, thermally efficient 5W wireless charging. IC Role / Device Role / Timing Role: Dual-mode receiver IC managing rectification, regulation, FOD, and bidirectional communication with base station. Use Value: Eliminates discrete rectifier + LDO + FOD controller components; reduces BOM count by ≥7 parts and PCB area by >30% vs. discrete solution. |
Use Scenario: Enabling fast wireless charging in 7–10 inch tablets with aluminum chassis and internal shielding. IC Role / Device Role / Timing Role: Primary power receiver handling up to 1.6 A LDO output while compensating for eddy current losses in metal enclosures. Use Value: OTP-programmed FOD profiles reject false positives from chassis heating, enabling reliable charging even with conductive back covers. |
| Portable DSC/DVC Chargers | Wearable Device Docking Stations |
|
Use Scenario: Embedded in digital still/video cameras for cordless charging via desktop cradles. IC Role / Device Role / Timing Role: WPC/PMA receiver providing regulated 5V to battery management IC with charge termination signaling via CHG_END/CS100. Use Value: Single-pin charge-status reporting (100% packet) replaces dedicated fuel-gauge interface, simplifying firmware integration. |
Use Scenario: Powering compact wearables (e.g., smartwatches) from magnetically guided PMA docking stations. IC Role / Device Role / Timing Role: PMA-optimized receiver using magnetic alignment feedback and low-noise analog sensing for sub-1W standby operation. Use Value: TEOP and EN pins enable host-controlled sleep/wake cycles, extending dock battery life by disabling LDO during idle periods. |
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; no PMA support; uses external MOSFETs for rectification; no integrated LDO. | Requires additional LDO and gate drivers; suitable only for Qi-certified systems without PMA requirement. | Select MP-A21 only when targeting WPC-only ecosystems and board space permits discrete power stage implementation. |
| BQ51222 (Texas Instruments) | WPC v1.2 compliant; includes integrated 5V/1.5A buck converter (not LDO); supports 15W max; no OTP-based FOD tuning. | Higher power capability but larger package (40-pin QFN); FOD relies solely on I²C configuration without hardware-selectable profiles. | Choose BQ51222 for future-proof 15W designs where programmable FOD is managed entirely in firmware and higher output current is required. |
Compared with MP-A21 and BQ51222, the P9028AC-0NBGI uniquely delivers dual-mode protocol support with integrated LDO and OTP-tunable FOD in a 5×5 mm footprint - making it optimal for cost-sensitive, space-constrained 5W mobile receivers needing field-deployable FOD calibration.
Availability
P9028AC-0NBGI is available at Aetrix Electronics and suitable for smartphone wireless charging, tablet power reception, portable camera docks, wearable docking stations, and industrial handheld chargers requiring stable component supply across production lifecycles.
Supply support for P9028AC-0NBGI 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, and wireless power solutions for mobile and computing markets.
The P9028AC-0NBGI belongs to IDT's wireless power receiver product line, engineered specifically for compact, dual-standard mobile devices requiring minimal external components and field-tunable foreign object detection.
FAQ
What wireless charging standards does the P9028AC-0NBGI support?
The P9028AC-0NBGI supports WPC v1.1.2 (Qi) and PMA v1.0 standards. It automatically detects the transmitter type at startup and initiates the appropriate AC modulation protocol. This dual-mode capability enables interoperability with both Qi-certified charging pads and Power Matters Alliance infrastructure without requiring hardware changes or mode selection circuitry in the P9028AC-0NBGI design.
How is foreign object detection (FOD) configured on the P9028AC-0NBGI?
FOD on the P9028AC-0NBGI is configured via two methods: volatile I²C register writes for runtime adjustment, and non-volatile OTP programming for system-specific calibration. Ten OTP profiles can be selected using the FOD1 resistor value, and a ±300 mW offset is applied via the FOD2 resistor. This dual-layer approach allows manufacturers to pre-tune FOD sensitivity for specific coil geometries, shielding materials, and thermal environments in the P9028AC-0NBGI implementation.
What is the role of the RLIM pin on the P9028AC-0NBGI?
The RLIM pin on the P9028AC-0NBGI sets the output current limit of the integrated 5V LDO using an external resistor to ground. The relationship is ILIM = 45 kΩ / RLIM, yielding 1.15–1.95 A for RLIM = 30 kΩ. Values below 25 kΩ clamp ILIM at 2 A. This resistor also determines the VRECT target voltage steps across load conditions, directly influencing system efficiency and transient response in the P9028AC-0NBGI application.
Does the P9028AC-0NBGI require external MOSFETs for rectification?
No, the P9028AC-0NBGI integrates a full-bridge synchronous rectifier with self-driven NMOS switches and bootstrap drivers (BST1/BST2). It operates in half-synchronous mode below 300 mA and full-synchronous mode above that threshold. No external rectifier MOSFETs are needed - the P9028AC-0NBGI delivers complete AC-to-DC conversion from AC1/AC2 inputs to VRECT with only passive tank components required.
What protection features are built into the P9028AC-0NBGI?
The P9028AC-0NBGI includes overvoltage protection (13.3 V trip), overcurrent protection (programmable via RLIM), thermal shutdown (150°C activation), and over-temperature input (TEOP pin). It also features under-voltage lockout (2.5 V), open-drain STAT and INT outputs for real-time status and fault signaling, and internal clamping FETs on VRECT to suppress overvoltage events. All protections trigger automatic EOP/EOC packet transmission and LDO disable in the P9028AC-0NBGI.
P9028AC-0NBGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tray
- 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-0NBGI FAQ
1.How can I place an order for P9028AC-0NBGI through Aetrix?
Please submit a Request for Quotation (RFQ) for P9028AC-0NBGI 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-0NBGI reliable?
The price and inventory of P9028AC-0NBGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P9028AC-0NBGI is usually 5 days.
3.What payment methods are accepted for P9028AC-0NBGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P9028AC-0NBGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P9028AC-0NBGI?
P9028AC-0NBGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P9028AC-0NBGI 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-0NBGI?
For technical support, including P9028AC-0NBGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P9028AC-0NBGI requirements.
6.How does Aetrix verify that P9028AC-0NBGI is sourced from the original manufacturer or authorized distributors?
All P9028AC-0NBGI 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-0NBGI meets industry standards.
7.What is the process for return or replacement of P9028AC-0NBGI?
All P9028AC-0NBGI units undergo pre-shipment inspection (PSI). If there is an issue with P9028AC-0NBGI, 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-0NBGI part is unused and in its original packaging.
Return procedure for P9028AC-0NBGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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