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Renesas P9225-RAHGI8
- Part No.:
- P9225-RAHGI8
- Manufacturer:
- Renesas
- Category:
- Power Management - Specialized
- Package:
- 52-UFBGA, WLCSP
- Datasheet:
-
P9225-RAHGI8.pdf
- Description:
- WIRELESS PWR
- Quantity:
- Payment:
- Shipping:
Inventory:4,691
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Product details
Overview
P9225-RAHGI8 from Renesas Electronics (formerly IDT) is a dual-mode WPC-1.2.4 and PMA SR1 compliant wireless power receiver IC with integrated 32-bit ARM® Cortex®-M0 microcontroller, synchronous rectifier (RDS(ON) < 50 mΩ), and ultra-low-dropout LDO regulator delivering 4.5–5.5 V DC output at up to 1.2 A for 5W battery-powered devices.
For engineers reviewing the P9225-RAHGI8 datasheet, P9225-RAHGI8 pinout, P9225-RAHGI8 application, or P9225-RAHGI8 equivalent, key selection criteria include its programmable current limit (via ILIM pin), patented over-voltage clamp eliminating external capacitors, I²C interface support, and dedicated remote temperature sensing (TS pin) for thermal management in compact portable electronics.
Technical Context
The P9225-RAHGI8 implements magnetic inductive power conversion using a fully integrated synchronous rectifier bridge followed by an ultra-low-dropout linear regulator - enabling high-efficiency DC-to-DC conversion (82% peak with P9038-R TX) without requiring external MOSFETs or discrete LDOs. Its embedded Cortex-M0 processor executes real-time foreign object detection (FOD) calibration via RPPO/RPPG pins and manages dynamic load regulation across WPC and PMA protocols.
Communication occurs via open-drain I²C (SCL/SDA) and bidirectional analog signaling through COM1/COM2/COMA/COMB pins for transmitter handshake, while EN (active-low) and EOC (active-high) provide hardware-level system control. The device supports programmable output voltage (VOSET), over-current protection (ILIM), and die temperature monitoring (INT assertion at >140°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wireless Standard Support | WPC-1.2.4 compliant and PMA SR1 compatible - enables interoperability with both major Qi and Power Matters Alliance charging ecosystems. |
| Output Voltage Range | 4.5 V to 5.5 V (programmable via VOSET resistor divider) - matches USB-standard battery charging requirements without external feedback circuitry. |
| Peak DC-to-DC Efficiency | 82% (measured with P9038-R transmitter) - reduces thermal load and extends runtime in space-constrained portable devices. |
| Operating Temperature | 0°C to +85°C ambient - validated for consumer electronics environments including headsets, tablets, and medical accessories. |
| Package | 52-WLCSP (2.64 × 3.94 mm, 0.4 mm pitch) - ultra-compact footprint optimized for thin-profile wearable and handheld form factors. |
| Integrated Protection | Patented over-voltage clamp (12 V DC OVP), programmable over-current limit (ILIM), and thermal shutdown (>140°C die temp) - eliminates need for external TVS diodes or current-sense resistors. |
| Interface | I²C (SCL/SDA), open-drain interrupt (INT), active-low enable (EN), and active-high end-of-charge (EOC) - enables full host MCU control and status reporting. |
Pinout & Package
Package: 52-ball Wafer-Level Chip Scale Package (WLCSP), 2.64 × 3.94 mm, 0.4 mm pitch, rated for 0°C to +85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (D1,D2,D3,D4,D5,D6) | Regulated DC output | Delivers final 4.5–5.5 V supply to battery or system rail; requires six 22 µF decoupling capacitors total (one per pin) for low-noise operation. |
| VRECT (E1,E2,E5,E6,F2,F3,F4,F5) | Rectified AC input | Outputs unregulated voltage from internal synchronous rectifier bridge; connects to resonant tank coil and requires eight 22 µF + 0.1 µF parallel capacitors for ripple suppression. |
| EN (B5) | Active-low enable | Pulling HIGH forces shut-down mode (500 µA quiescent); pulling LOW enables full operation - provides hardware-level power gating independent of firmware. |
| VOSET (A4) | Output voltage programming | Analog input pin used with external resistor divider to set precise output voltage (e.g., 5.0 V default when pulled to VDD18 via 10 kΩ). |
| ILIM (B4) | Over-current limit setting | Analog input pin that configures current limit threshold (e.g., 1.2 A max) via resistor divider - enables safe operation under varying coil coupling conditions. |
| TS (H4) | Remote temperature sense | Connects to NTC thermistor network for external temperature monitoring; triggers thermal shutdown if external sensor exceeds programmed threshold. |
| INT (C3) | Fault interrupt flag | Open-drain output asserted LOW on over-voltage, over-current, die temp >140°C, or external over-temp - enables immediate host MCU response without polling. |
| SCL/SDA (A3/B3) | I²C interface | Supports bidirectional register access for FOD tuning, status reads, and configuration updates; requires 5.1 kΩ pull-up to VDD18 if used. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded 32-bit ARM® Cortex®-M0 | Enables real-time FOD calibration, protocol arbitration between WPC/PMA modes, and firmware-updatable behavior without external controller. |
| Patented over-voltage protection clamp | Eliminates need for external 12 V TVS diodes on VRECT pins - reduces BOM count, PCB area, and cost in production designs. |
| Dedicated remote temperature sensing (TS) | Allows placement of NTC thermistor near battery or coil - improves thermal safety margin beyond die temperature alone. |
| Programmable current limit (ILIM) | Permits dynamic adaptation to coil misalignment or foreign metal presence - maintains compliance while preventing overheating. |
| Multi-pin AC input (AC1/AC2) | Supports differential resonant tank connection with separate boost paths (BST1/BST2) - enhances rectifier efficiency and EMI performance. |
Applications
| Wireless Earbuds Charging | Medical Wearable Sensors |
|---|---|
|
Use Scenario: Compact earbud case with integrated Qi-compatible charging pad. IC Role / Device Role / Timing Role: Wireless power receiver managing regulated 5 V output to charge lithium-polymer batteries while executing real-time FOD to prevent heating during pocket carry. Use Value: Eliminates need for separate charging port and enables sealed, waterproof enclosure design with automatic charge termination via EOC signal. |
Use Scenario: Disposable glucose monitor worn on skin with rechargeable battery. IC Role / Device Role / Timing Role: Dual-mode receiver providing safe, low-heat power delivery while monitoring external temperature via TS pin to avoid skin burn risk. Use Value: Meets IEC 62366 usability standards through programmable current limiting and thermal shutdown - critical for Class II medical devices. |
| Tablet Stylus Docking Station | Smart Camera Battery Pack |
|
Use Scenario: Magnetic docking cradle for stylus with integrated PMA/WPC charging. IC Role / Device Role / Timing Role: Receiver IC handling protocol negotiation, rectification, and LDO regulation while communicating status via I²C to host MCU. Use Value: Enables single-dock compatibility with both Qi-certified tablets and PMA-enabled enterprise devices - simplifies supply chain and user experience. |
Use Scenario: External battery pack for action camera with wireless recharging capability. IC Role / Device Role / Timing Role: High-efficiency (82% peak) receiver converting resonant AC to stable 5 V output under variable load (video recording vs standby). Use Value: Extends usable runtime by minimizing power loss in rectification/LDO stages - especially critical during high-current video capture mode. |
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 MCU for FOD; lower integration (no embedded Cortex-M0). | Limited to Qi-certified infrastructure; lacks remote TS pin and programmable ILIM - requires additional components for thermal/current safety. | Select when targeting only WPC ecosystems and cost-sensitive designs where external MCU already exists. |
| bq51222 (Texas Instruments) | WPC-1.2.2 compliant; no PMA support; fixed 5 V output (no VOSET); lower peak efficiency (78%) with same TX. | Not suitable for multi-standard deployments; lacks analog programmability for voltage/current - restricts battery chemistry flexibility. | Choose for legacy Qi-only systems where firmware simplicity outweighs dual-mode flexibility and efficiency gains. |
Compared with MP-A21 and bq51222, the P9225-RAHGI8 delivers broader standard coverage (WPC+PMA), higher integration (on-chip MCU, LDO, rectifier), and superior thermal safety (TS pin + programmable ILIM), making it optimal for next-generation portable electronics requiring interoperability and compactness.
Availability
P9225-RAHGI8 is available at Aetrix Electronics and suitable for wireless earbuds, medical wearables, tablet stylus docks, and smart camera battery packs requiring stable component supply across extended production lifecycles.
Supply support for P9225-RAHGI8 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
Renesas Electronics Corporation (formerly Integrated Device Technology) is a global semiconductor leader specializing in microcontrollers, analog, power management, and connectivity solutions for automotive, industrial, and consumer markets.
The P9225-RAHGI8 belongs to Renesas' wireless power receiver product line, engineered specifically for compact, battery-operated devices needing dual-standard interoperability, high integration, and robust thermal and electrical protection.
FAQ
What communication interfaces does the P9225-RAHGI8 support?
The P9225-RAHGI8 supports I²C (SCL/SDA pins) for register-level configuration and status monitoring, plus analog bidirectional signaling via COM1/COM2/COMA/COMB pins for WPC/PMA protocol handshake with transmitters. It does not support SPI, UART, or CAN. All digital communication is implemented through the embedded ARM® Cortex®-M0 core inside the P9225-RAHGI8, enabling firmware-updatable behavior without external logic.
How does the P9225-RAHGI8 implement over-voltage protection without external components?
The P9225-RAHGI8 incorporates a patented internal over-voltage clamp circuit that activates at 12 V on the VRECT pins, eliminating the need for external TVS diodes. This feature is confirmed in the Absolute Maximum Ratings table (VOVP-DC = 12 V) and Electrical Characteristics section of the official datasheet. The clamp operates independently of firmware and responds within nanoseconds, protecting downstream circuitry in the P9225-RAHGI8 itself and connected loads.
Can the P9225-RAHGI8 operate in both WPC and PMA modes simultaneously?
No - the P9225-RAHGI8 automatically detects and locks to either WPC-1.2.4 or PMA SR1 protocol during the initial ping phase; it does not time-share or switch mid-operation. Mode selection is handled autonomously by the embedded Cortex-M0 processor based on transmitter handshake signals. The P9225-RAHGI8 achieves true dual-mode capability through this deterministic, single-mode-at-a-time operation - verified in Sections 10 and 11 of the datasheet.
What is the function of the SINK pin on the P9225-RAHGI8?
The SINK pin on the P9225-RAHGI8 is an open-drain output used to control the internal rectifier clamp circuit. Per the Pin Descriptions table, it must be shorted directly to the VRECT pin to enable proper synchronous rectifier operation. Leaving SINK unconnected or floating disables clamp functionality and risks voltage overshoot during dead-time transitions - a requirement explicitly stated in Table 1 of the datasheet for reliable operation.
Does the P9225-RAHGI8 require external passive components for basic operation?
Yes - the P9225-RAHGI8 requires external components for core functionality: eight 22 µF + 0.1 µF capacitors on VRECT pins, six 22 µF capacitors on OUT pins, 1 µF on VDD5V/VDD18, 15 nF boost capacitors on BST1/BST2, and resistor dividers on VOSET and ILIM for voltage/current programming. These values are specified in the Typical Application Circuit (Figure 22) and Pin Descriptions section - confirming that while highly integrated, the P9225-RAHGI8 is not a zero-external-component solution.
P9225-RAHGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Wireless Power Receiver
- Current - Supply:
- 3mA
- Voltage - Supply:
- 1.62V ~ 1.98V, 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-WLCSP (2.64x3.94)
P9225-RAHGI8 FAQ
1.How can I place an order for P9225-RAHGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for P9225-RAHGI8 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 P9225-RAHGI8 reliable?
The price and inventory of P9225-RAHGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P9225-RAHGI8 is usually 5 days.
3.What payment methods are accepted for P9225-RAHGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P9225-RAHGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P9225-RAHGI8?
P9225-RAHGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P9225-RAHGI8 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 P9225-RAHGI8?
For technical support, including P9225-RAHGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P9225-RAHGI8 requirements.
6.How does Aetrix verify that P9225-RAHGI8 is sourced from the original manufacturer or authorized distributors?
All P9225-RAHGI8 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 P9225-RAHGI8 meets industry standards.
7.What is the process for return or replacement of P9225-RAHGI8?
All P9225-RAHGI8 units undergo pre-shipment inspection (PSI). If there is an issue with P9225-RAHGI8, 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 P9225-RAHGI8 part is unused and in its original packaging.
Return procedure for P9225-RAHGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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