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Renesas DA9131-XXRT2-A
- Part No.:
- DA9131-XXRT2-A
- Manufacturer:
- Renesas
- Package:
- 24-PowerUFQFN
- Datasheet:
-
DA9131-XXRT2-A.pdf
- Description:
- IC REG BUCK ADJ 10A 24FCQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,413
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Product details
Overview
DA9131-XXRT2-A from Renesas Electronics is a dual-channel, automotive-grade PMIC integrating two fully synchronous buck converters for CPU/GPU and DDR memory rail regulation in ADAS and infotainment systems. It delivers up to 5 A per channel across 0.3 V–1.9 V output range from a 2.8 V–5.5 V input, features 4 MHz switching frequency, ±1 % static output voltage accuracy, and AEC-Q100 Grade 2 qualification.
For engineers reviewing the DA9131-XXRT2-A datasheet, DA9131-XXRT2-A pinout, DA9131-XXRT2-A application, or DA9131-XXRT2-A equivalent, key selection criteria include remote-sense feedback capability, I2C-compatible FM+ interface with configurable slave address, Dynamic Voltage Control (DVC) support via register or GPIO, integrated over-temperature/over-current protection, and wettable-flank 24-pin FCQFN (3.3 mm × 4.8 mm) packaging for automotive-grade solder joint inspection.
Technical Context
The DA9131-XXRT2-A implements two independent single-phase buck regulators with integrated high-side and low-side MOSFETs, eliminating external FETs or Schottky diodes. Each channel uses resistive divider feedback (FB1P/FB1N, FB2P/FB2N) with remote sensing for ±1 % static accuracy under load and thermal variation.
Its digital control core supports programmable soft-start, cycle-by-cycle current limiting, and DVC via either I2C register writes or dedicated GPIO pins. The FM+-compatible I2C interface operates up to 1 MHz and enables multi-device addressing through CONF/GPIO0 configuration, supporting complex power sequencing in SoC-based ECU designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage | 2.8 V to 5.5 V - compatible with automotive 3.3 V/5 V bias rails and battery-supplied systems |
| Output voltage range | 0.3 V to 1.9 V per channel - supports modern low-voltage CPU cores, GPU domains, and DDR4/LPDDR4 memory rails |
| Max output current | 5 A per channel - sufficient for high-performance automotive SoCs without external current boosting |
| Switching frequency | 4 MHz nominal - enables use of ultra-small 220 nH inductors and compact 218 mm² total solution area |
| Output accuracy | ±1 % static, ±5 % dynamic - ensures stable logic-level compliance during load transients in safety-critical ECUs |
| Operating temperature | −40 °C to +105 °C ambient - meets extended automotive ambient requirements for under-hood and center-console placement |
| Qualification | AEC-Q100 Grade 2 - validated for automotive applications with TJ ≤ +125 °C and reliability testing per stress test conditions |
Pinout & Package
DA9131-XXRT2-A is housed in a 24-pin FCQFN package with wettable flanks (3.3 mm × 4.8 mm), optimized for automated optical inspection (AOI) of solder joints in automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVDD1, PVDD2 | Power supply inputs | Dedicated 5 A-capable inputs for each buck channel; decoupling required near pins to maintain stability |
| LX1, LX2 | Switch node outputs | High-current buck switch nodes driving external 220 nH inductors; require tight layout with minimal loop area |
| FB1P/FB1N, FB2P/FB2N | Differential remote sense inputs | Enable Kelvin connection to load for ±1 % regulation accuracy regardless of PCB trace resistance |
| SCL/GPIO3, SDA/GPIO4 | I2C interface / GPIO | FM+-compatible bus interface (up to 1 MHz); configurable as general-purpose I/O when not used for communication |
| CONF/GPIO0 | Configuration input | Defines I2C slave address at power-up; enables multiple DA9131-XXRT2-A devices on same bus without address conflict |
| IC_EN | Chip enable | Active-high enable signal; controls global device power-up sequencing and standby entry |
| PGND, AGND | Ground terminals | Separate power and analog ground planes required to minimize noise coupling into feedback paths |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated buck FETs | Eliminates need for external high-side/low-side MOSFETs or Schottky diodes - reduces BOM count and layout complexity |
| Remote sense feedback | Compensates for IR drop across PCB traces, maintaining ±1 % output accuracy at point-of-load in dense automotive modules |
| Dynamic Voltage Control (DVC) | Adaptively lowers VOUT during CPU/GPU idle states via I2C or GPIO, reducing system power consumption without software intervention |
| Programmable soft-start | Configurable ramp rate limits inrush current during power-up, preventing input rail collapse in shared 5 V supply domains |
| Integrated protection | Cycle-by-cycle current limiting, thermal shutdown, and over-temperature warning - no external sensors or fault-handling logic required |
Applications
| Vehicle Infotainment Systems | ADAS Domain Controllers |
|---|---|
Use Scenario: Powering application processors (e.g., NXP i.MX8, Qualcomm SA8155) and display interfaces in head-unit designs. IC Role / Device Role / Timing Role: Primary dual-rail PMIC delivering core SoC voltage (e.g., 1.0 V @ 4 A) and DDR memory voltage (e.g., 1.1 V @ 3 A) with synchronized sequencing. Use Value: Remote sensing maintains voltage accuracy across long flex-cable connections to display modules, ensuring UI responsiveness and avoiding reset events. | Use Scenario: Supplying radar SoCs (e.g., TI AWR2944) and vision processors in front-camera or sensor-fusion ECUs. IC Role / Device Role / Timing Role: Regulating low-noise analog and digital rails for high-speed ADCs, SerDes links, and real-time compute units with strict transient response requirements. Use Value: 4 MHz switching and ±5 % dynamic accuracy ensure clean power during rapid radar chirp bursts and AI inference cycles without droop-induced timing errors. |
| Automotive Cluster Displays | Telematics Control Units (TCU) |
Use Scenario: Driving high-resolution TFT-LCD or OLED instrument clusters with integrated graphics rendering engines. IC Role / Device Role / Timing Role: Dual-buck regulator supplying GPU core (0.85 V) and memory interface (1.8 V) with DVC-enabled voltage scaling during animation frames. Use Value: Programmable soft-start prevents backlight flicker during ignition-on power-up; wettable-flank package ensures AOI-verified solder joints for long-term reliability. | Use Scenario: Powering cellular modems (e.g., Quectel AG35), GNSS receivers, and MCU subsystems in connected vehicle gateways. IC Role / Device Role / Timing Role: Providing isolated, sequenced rails for LTE/Wi-Fi coexistence, secure boot execution, and CAN FD communication interfaces. Use Value: Integrated over-temperature protection prevents thermal runaway during sustained LTE transmission in enclosed dashboard enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS659424RHBR | Triple-channel output (2 buck + 1 LDO), lower max current per buck (3.5 A), 2.7 V–5.5 V input, QFN-40 package | Supports mixed-signal SoCs requiring auxiliary LDO rails; larger footprint and higher pin count limit space-constrained modules | Select when needing >2 regulated rails or tighter LDO noise specs; not pin-compatible with DA9131-XXRT2-A |
| MAX20430ATPA/VY+ | Dual buck with 6 A per channel, 2.8 V–5.5 V input, ±0.5 % accuracy, 20-pin TQFN, no remote sense | Better current capability and accuracy but lacks differential feedback - unsuitable for long-trace or high-precision DDR applications | Prefer for high-current, short-PCB-run applications where remote sensing is unnecessary; different pinout and register map |
Compared with TPS659424RHBR and MAX20430ATPA/VY+, the DA9131-XXRT2-A uniquely balances 5 A/channel capability, ±1 % remote-sense accuracy, AEC-Q100 Grade 2 qualification, and compact 24-pin FCQFN packaging - making it optimal for space- and precision-constrained ADAS and infotainment power stages.
Availability
DA9131-XXRT2-A is available at Aetrix Electronics and suitable for vehicle infotainment systems, ADAS domain controllers, and automotive telematics requiring stable component supply, long lifecycle support, and AEC-Q100-compliant traceability.
Supply support for DA9131-XXRT2-A 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 is a global semiconductor leader specializing in microcontrollers, analog power, and automotive SoC solutions, with deep expertise in functional safety and ASIL-B/D compliant design.
The DA9131-XXRT2-A belongs to Renesas' DA-series automotive PMIC portfolio, engineered specifically for high-efficiency, high-accuracy power delivery to next-generation automotive processors and memory subsystems in safety-critical environments.
FAQ
What is the primary function of the DA9131-XXRT2-A in automotive systems?
The DA9131-XXRT2-A is a dual-channel automotive PMIC that regulates critical voltage rails for CPUs, GPUs, and DDR memory in ADAS, infotainment, and cluster applications. It integrates two fully synchronous buck converters with remote sensing, I2C control, and AEC-Q100 Grade 2 qualification - enabling precise, reliable, and efficient power delivery in safety-critical automotive ECUs. Its design eliminates external FETs and supports dynamic voltage scaling to reduce system power consumption.
Does the DA9131-XXRT2-A support remote voltage sensing, and why is it important?
Yes, the DA9131-XXRT2-A supports true differential remote sensing via FB1P/FB1N and FB2P/FB2N pins. This allows the IC to measure output voltage directly at the load, compensating for IR drop across PCB traces or connectors. In automotive applications - especially those with long flex cables to displays or distributed sensor modules - this ensures ±1 % static output accuracy at the point-of-load, preventing logic errors, resets, or timing violations caused by voltage droop.
What package type and dimensions does the DA9131-XXRT2-A use, and how does it benefit automotive manufacturing?
The DA9131-XXRT2-A uses a 24-pin FCQFN package with wettable flanks, measuring 3.3 mm × 4.8 mm. The wettable flanks enable automated optical inspection (AOI) of solder joints - a critical requirement for zero-defect automotive PCB assembly. Its compact size also supports high-density layouts in space-constrained modules like center consoles and radar ECUs, while the thermal performance (θJA = 21.21 °C/W) sustains operation at full load within −40 °C to +105 °C ambient.
How does Dynamic Voltage Control (DVC) work on the DA9131-XXRT2-A?
Dynamic Voltage Control (DVC) on the DA9131-XXRT2-A allows adaptive adjustment of output voltage based on processor load state. It can be triggered either by writing to internal registers via the I2C-compatible FM+ interface or by asserting a dedicated GPIO pin (e.g., CONF/GPIO0 or GPIO1). This enables real-time voltage scaling - lowering VOUT during CPU/GPU idle modes - which reduces dynamic power dissipation without requiring host firmware intervention or external DACs.
Is the DA9131-XXRT2-A pin-compatible with other Renesas PMICs like the DA9130 or DA9231?
No, the DA9131-XXRT2-A is not pin-compatible with the DA9130 or DA9231. It uses a unique 24-pin FCQFN layout with specific pin assignments for dual-channel feedback (FB1P/FB1N, FB2P/FB2N), wettable flanks, and integrated GPIO functionality. The DA9130 is a single-channel variant, while the DA9231 targets different input ranges and feature sets. Migration requires PCB redesign and firmware adaptation due to differences in register mapping, protection thresholds, and sequencing behavior.
DA9131-XXRT2-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 24-PowerUFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.3V
- Voltage - Output (Max):
- 1.9V
- Current - Output:
- 10A
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 24-FCQFN (3.3x4.8)
DA9131-XXRT2-A FAQ
1.How can I place an order for DA9131-XXRT2-A through Aetrix?
Please submit a Request for Quotation (RFQ) for DA9131-XXRT2-A 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 DA9131-XXRT2-A reliable?
The price and inventory of DA9131-XXRT2-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DA9131-XXRT2-A is usually 5 days.
3.What payment methods are accepted for DA9131-XXRT2-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DA9131-XXRT2-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DA9131-XXRT2-A?
DA9131-XXRT2-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DA9131-XXRT2-A 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 DA9131-XXRT2-A?
For technical support, including DA9131-XXRT2-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DA9131-XXRT2-A requirements.
6.How does Aetrix verify that DA9131-XXRT2-A is sourced from the original manufacturer or authorized distributors?
All DA9131-XXRT2-A 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 DA9131-XXRT2-A meets industry standards.
7.What is the process for return or replacement of DA9131-XXRT2-A?
All DA9131-XXRT2-A units undergo pre-shipment inspection (PSI). If there is an issue with DA9131-XXRT2-A, 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 DA9131-XXRT2-A part is unused and in its original packaging.
Return procedure for DA9131-XXRT2-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DA9131-XXRT2-A Tags
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