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Renesas P9221-RAHGI
- Part No.:
- P9221-RAHGI
- Manufacturer:
- Renesas
- Category:
- Power Management - Specialized
- Package:
- 52-UFBGA, WLCSP
- Datasheet:
-
P9221-RAHGI.pdf
- Description:
- IC WIRELESS
- Quantity:
- Payment:
- Shipping:
Inventory:2,964
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Product details
Overview
P9221-RAHGI from Renesas Electronics (formerly IDT) is a Qi-compliant wireless power receiver IC for 15W magnetic inductive charging systems, integrating a synchronous rectifier, ultra-low-dropout LDO regulator, and 32-bit ARM® Cortex®-M0 microcontroller. It delivers programmable 9V or 12V DC output with 87% peak DC-to-DC efficiency when paired with the P9242-R transmitter, supports WPC-1.2.3, and operates across 0°C to +85°C ambient.
For engineers reviewing the P9221-RAHGI datasheet, P9221-RAHGI pinout, P9221-RAHGI application, or P9221-RAHGI equivalent, key selection considerations include its 52-WLCSP package, I²C interface support, programmable current limit via ILIM pin, patented over-voltage protection eliminating external capacitors, and dedicated alignment guide inputs (ALIGNX/ALIGNY) for spatial optimization in compact mobile devices.
Technical Context
The P9221-RAHGI implements a full-bridge synchronous rectifier with low RDS(ON) switches and an integrated LDO regulator to convert resonant AC input (from AC1/AC2) into stable regulated DC output at OUT. Its embedded Cortex-M0 processor executes real-time foreign object detection (FOD), misalignment compensation, and dynamic power packet decoding per WPC-1.2.3 protocol phases including Ping, Identification, Negotiation, and Power Transfer.
Communication occurs via open-drain COMM1/COMM2 pins using ASK modulation, while control and status monitoring use I²C (SCL/SDA), interrupt flag (INT̅), and analog programming pins (VOSET/Q-Fact, RPPO, RPPG, ILIM). Thermal shutdown triggers at 140°C die temperature, and remote temperature sensing is supported via TS/EOC pin with NTC network interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Programmable 9V or 12V DC at OUT pin; set by resistor divider on VOSET/Q-Fact pin. |
| Peak Efficiency | 87% DC-to-DC efficiency with P9242-R transmitter; enables thermal compliance in space-constrained battery-powered devices. |
| Operating Temp | 0°C to +85°C ambient; junction rated -5°C to +125°C; validated on JEDEC 4-layer board with θJA = 47°C/W. |
| Compliance | WPC-1.2.3 certified; supports full digital handshake including Selection, Ping, Identification, Configuration, Calibration, and Power Transfer phases. |
| FOD Capability | User-programmable via RPPO and RPPG pins; patented clamp eliminates need for external FOD capacitors, reducing BOM count. |
| Package | 52-WLCSP (AHG52), 2.64 × 3.94 mm, 0.4 mm pitch; bottom-terminal land pattern per Figure 26. |
| Interface | I²C (SCL/SDA), open-drain interrupt (INT̅), active-low enable (EN̅), and ASK-based bidirectional communication (COMM1/COMM2). |
Pinout & Package
Package: 52-ball Wafer-Level Chip Scale Package (WLCSP, AHG52), 2.64 × 3.94 mm, 0.4 mm pitch, bottom-terminal configuration per JEDEC MO-220 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 / AC2 | AC Input | Primary resonant tank inputs; connect to Rx coil and resonant capacitance; support up to 2 A RMS current. |
| OUT | Regulated DC Output | Delivers programmable 9V/12V; requires two 10 μF ceramic capacitors to GND for stability. |
| VRECT | Rectifier Output | Internal synchronous rectifier bridge output; connects to three 10 μF + 0.1 μF parallel capacitors for ripple suppression. |
| VOSET/Q-Fact | Programming Input | Resistor-divider input setting output voltage and Q-factor reference; determines regulation point and coil coupling sensitivity. |
| ILIM | Current Limit Input | Resistor-divider input configuring over-current threshold; enables precise load protection without external sense resistors. |
| RPPO / RPPG | FOD Calibration Inputs | Analog inputs tuning offset and gain of foreign object detection algorithm; disable FOD by grounding both pins. |
| ALIGNX / ALIGNY | Alignment Guide Inputs | AC-coupled inputs measuring coil misalignment; used to generate visual/tactile feedback during charging placement. |
| SCL / SDA | I²C Interface | Open-drain serial bus lines; require 5.1 kΩ pull-up to VDD18 for host MCU configuration and telemetry readback. |
| INT̅ | Interrupt Flag | Active-low open-drain signal asserting on over-voltage, over-current, die temp >140°C, or external over-temp via TS/EOC. |
| EN̅ | Enable Control | Active-low logic input forcing shutdown when HIGH; must be pulled LOW to activate device operation. |
| TS/EOC | Thermal & EOC Sense | Dual-function pin: NTC thermistor input for remote over-temp shutdown or ground connection to send End Power Transfer packet. |
| COMM1 / COMM2 | ASK Communication | Open-drain outputs modulating AC tank for bidirectional WPC protocol; require 47 nF capacitor to respective AC pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated ARM® Cortex®-M0 MCU | Enables real-time FOD, alignment correction, and firmware-upgradable protocol stack without external controller. |
| Patented OVP Clamp | Eliminates need for external over-voltage protection capacitors, reducing PCB area and component cost by ~3 parts. |
| Full Synchronous Rectification | Low RDS(ON) internal switches minimize conduction loss, enabling 87% peak efficiency at 15W load. |
| Dedicated Alignment Sensing | Separate ALIGNX/ALIGNY inputs provide independent X/Y misalignment metrics for precision placement guidance. |
| Programmable Current Limit | Set via ILIM pin resistor divider; allows dynamic adaptation to battery charge stage or thermal constraints. |
Applications
| Smartphone Charging | Tablet Power Reception |
|---|---|
Use Scenario: Integrated wireless charging receiver in flagship smartphones supporting 15W fast charging. IC Role / Device Role / Timing Role: Primary DC power conversion IC converting resonant AC to regulated 12V output for battery charging circuitry. Use Value: 87% efficiency minimizes thermal rise in thin form factors; programmable FOD ensures safety compliance under varied foreign object conditions. | Use Scenario: Wireless power reception subsystem in 10-inch tablets with dual-coil layout. IC Role / Device Role / Timing Role: Core Qi-compliant receiver managing power negotiation, rectification, regulation, and thermal monitoring. Use Value: ALIGNX/ALIGNY inputs enable accurate coil positioning feedback, improving coupling efficiency and user experience during placement. |
| Medical Wearable Charger | Qi-Certified Accessory Dock |
Use Scenario: Compact charging solution for sealed medical wearables requiring IP67-rated wireless power entry. IC Role / Device Role / Timing Role: Isolated power conversion IC delivering regulated 9V output with remote temperature sensing via TS/EOC pin. Use Value: Embedded thermal protection and NTC interface meet IEC 60601-1 safety requirements without external supervision circuitry. | Use Scenario: Multi-device charging dock supporting simultaneous smartphone and earbud charging. IC Role / Device Role / Timing Role: Secondary receiver IC in multi-receiver topology, configured via I²C for coordinated power allocation. Use Value: I²C interface and programmable VOSET allow dynamic output voltage selection per connected device type (e.g., 9V for earbuds, 12V for phone). |
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) | WPC-1.2.2 compliant; 12W max output; uses external MCU for FOD; no integrated Cortex-M0. | Limited to 12W systems; requires additional microcontroller for full protocol handling and telemetry. | Select MP-A21 only if lower power rating and external control architecture are acceptable. |
| BQ51221 (Texas Instruments) | WPC-1.2.2 compliant; 5W–10W range; integrated FOD but no alignment sensing; different 42-WLCSP package. | Not suitable for 15W designs; lacks ALIGNX/ALIGNY and programmable 12V output capability. | Choose BQ51221 for cost-sensitive sub-10W accessories where alignment feedback is unnecessary. |
Compared with MP-A21 and BQ51221, the P9221-RAHGI uniquely combines 15W capability, integrated Cortex-M0, ALIGNX/ALIGNY sensing, and WPC-1.2.3 compliance-enabling single-chip implementation of high-efficiency, intelligent, and spatially aware wireless charging in premium mobile devices.
Availability
P9221-RAHGI is available at Aetrix Electronics and suitable for smartphone charging, tablet power reception, medical wearable chargers, and Qi-certified accessory docks requiring stable component supply and full WPC-1.2.3 compliance.
Supply support for P9221-RAHGI 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 is a global semiconductor leader formed from the merger of Renesas Technology and NEC Electronics, specializing in microcontrollers, analog, power, and connectivity solutions.
The P9221-RAHGI belongs to Renesas' Qi-compliant wireless power receiver product line, designed specifically for high-efficiency, programmable, and spatially intelligent 15W charging in space-constrained portable electronics.
FAQ
What is the maximum output power supported by the P9221-RAHGI?
The P9221-RAHGI supports up to 15W of wireless power transfer when paired with a compatible WPC-compliant transmitter such as the P9242-R. Its 87% peak DC-to-DC efficiency at 15W load ensures minimal thermal dissipation, and the device is rated for continuous operation within 0°C to +85°C ambient temperature. The actual delivered power depends on coil coupling, alignment, and transmitter capabilities.
Does the P9221-RAHGI require an external microcontroller to operate?
No, the P9221-RAHGI does not require an external microcontroller. It integrates a 32-bit ARM® Cortex®-M0 processor that executes the full WPC-1.2.3 protocol stack-including Ping, Identification, Negotiation, Calibration, and Power Transfer phases-as well as real-time FOD, alignment analysis, and thermal management. Host MCU interaction is optional and limited to I²C configuration and telemetry readback.
How is output voltage programmed on the P9221-RAHGI?
The P9221-RAHGI output voltage is programmed via the VOSET/Q-Fact pin using an external resistor divider. Connecting this pin to a specific voltage ratio sets either 9V or 12V regulated output at the OUT pin. Default 12V operation occurs when VOSET is pulled to VDD18 through a 10kΩ resistor. Section 8.2 of the datasheet provides exact resistor values and Q-factor adjustment guidelines for each target voltage.
What is the purpose of the ALIGNX and ALIGNY pins on the P9221-RAHGI?
The ALIGNX and ALIGNY pins on the P9221-RAHGI are dedicated analog inputs that measure differential AC signals from orthogonal coil windings to determine X- and Y-axis misalignment between transmitter and receiver coils. This enables real-time spatial feedback for user guidance or automatic coil selection in multi-coil systems-improving coupling efficiency and reducing charging time without requiring mechanical repositioning.
Can the P9221-RAHGI be used without implementing foreign object detection (FOD)?
Yes, the P9221-RAHGI can operate without FOD by grounding both RPPO and RPPG pins, which disables the patented FOD algorithm. However, disabling FOD violates WPC-1.2.3 certification requirements and compromises safety in production deployments. For certified designs, FOD must be enabled and calibrated using the RPPO/RPPG resistor dividers per Section 8.11 of the datasheet to ensure reliable metal/object detection across operating conditions.
P9221-RAHGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-UFBGA, WLCSP
- Packaging:
- Tray
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-WLCSP (2.64x3.94)
P9221-RAHGI FAQ
1.How can I place an order for P9221-RAHGI through Aetrix?
Please submit a Request for Quotation (RFQ) for P9221-RAHGI 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 P9221-RAHGI reliable?
The price and inventory of P9221-RAHGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P9221-RAHGI is usually 5 days.
3.What payment methods are accepted for P9221-RAHGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P9221-RAHGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P9221-RAHGI?
P9221-RAHGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P9221-RAHGI 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 P9221-RAHGI?
For technical support, including P9221-RAHGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P9221-RAHGI requirements.
6.How does Aetrix verify that P9221-RAHGI is sourced from the original manufacturer or authorized distributors?
All P9221-RAHGI 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 P9221-RAHGI meets industry standards.
7.What is the process for return or replacement of P9221-RAHGI?
All P9221-RAHGI units undergo pre-shipment inspection (PSI). If there is an issue with P9221-RAHGI, 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 P9221-RAHGI part is unused and in its original packaging.
Return procedure for P9221-RAHGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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