Renesas DA9224-XXFT1-A

Overview

DA9224-XXFT1-A from Renesas Electronics is a dual-output, automotive-grade multi-phase buck PMIC designed to supply CPU/GPU and DDR memory rails in ADAS and infotainment systems. It integrates two independent dual-phase converters delivering 2 × 8 A output current, supports 0.3–1.57 V programmable output (extendable to 4.3 V with resistor divider), operates from 2.8–5.5 V input, and features remote sensing, Dynamic Voltage Control (DVC), and AEC-Q100 Grade 2 qualification.

For engineers reviewing the DA9224-XXFT1-A datasheet, DA9224-XXFT1-A pinout, DA9224-XXFT1-A application, or DA9224-XXFT1-A equivalent, key selection criteria include its 66-ball 0.8 mm pitch TFBGA package, I²C/SPI-compatible interface, ±1% static output accuracy, 3 MHz switching frequency enabling low-profile inductor use, and integrated over-temperature/over-current protection for automotive reliability.

Technical Context

The DA9224-XXFT1-A implements two independent dual-phase synchronous buck regulators (Buck A and Buck B), each with dedicated LX, FBAP/FBAN, and FBBP/FBBN sense terminals. Its digital core supports register-based DVC via I²C or SPI, automatic phase shedding, and programmable soft-start with 50 µs typical ramp time.

It uses integrated high-side (29 mΩ) and low-side (21 mΩ) MOSFETs per phase, operates across –40 °C to +105 °C ambient, and includes remote sensing at point-of-load, thermal warning (110–140 °C) and critical (125–155 °C) thresholds, and VDDIO under-voltage lockout (1.315–1.55 V).

Key Specifications

Pinout & Package

DA9224-XXFT1-A is housed in a 66-ball Thin Fine-Pitch Ball Grid Array (TFBGA) with 0.8 mm pitch, optimized for thermal performance and PCB space efficiency in automotive modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-phase buck converter applications.

Compared with MPQ4475-AEC1 and TPS659424-Q1, the DA9224-XXFT1-A uniquely balances dual independent 8 A rails, AEC-Q100 Grade 2 compliance, 66-ball compactness, and DVC-enabled dynamic power management - making it optimal for space-constrained ADAS and infotainment ECUs requiring precise, isolated voltage regulation.

Availability

DA9224-XXFT1-A is available at Aetrix Electronics and suitable for automotive ADAS camera modules, digital instrument clusters, in-vehicle infotainment head units, and telematics control units requiring stable component supply across extended temperature and long product lifecycles.

Supply support for DA9224-XXFT1-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 delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT markets with emphasis on functional safety and energy efficiency.

The DA9224-XXFT1-A belongs to Renesas' automotive-qualified PMIC portfolio, engineered specifically for high-reliability power delivery to multi-core processors and memory in safety-critical vehicle systems.

FAQ

What is the maximum output current capability of the DA9224-XXFT1-A?

The DA9224-XXFT1-A integrates two independent dual-phase buck converters, each capable of delivering up to 8 A continuous output current. This provides a total of 2 × 8 A for separate rails-such as CPU core and DDR memory-without shared current limiting or thermal coupling between outputs. Each phase supports a minimum current limit of 4 A and maximum of 7 A, programmable via registers.

Does the DA9224-XXFT1-A support remote voltage sensing, and how is it implemented?

Yes, the DA9224-XXFT1-A supports true differential remote sensing for both Buck A and Buck B outputs. It uses dedicated FBAP/FBAN pins for Buck A and FBBP/FBBN pins for Buck B, enabling closed-loop regulation directly at the load. This compensates for voltage drop across PCB traces and connectors, maintaining ±1% accuracy even with up to 50 mΩ path resistance-critical for high-current, low-voltage rails in automotive ECUs.

What communication interfaces does the DA9224-XXFT1-A support, and are they pin-compatible?

The DA9224-XXFT1-A supports both 2-wire (I²C-compatible) and 4-wire (SPI-compatible) digital interfaces using shared pins: SDA/SI, SCL/SK, and nCS/GPI4. Interface mode is selected at power-up via GPI configuration. No pin reassignment is required-hardware detects protocol automatically. Both modes support full register access, DVC control, and fault reporting with identical timing specifications per datasheet Rev 2.7.

Is the DA9224-XXFT1-A qualified for automotive applications, and what standards does it meet?

Yes, the DA9224-XXFT1-A is AEC-Q100 Grade 2 qualified, rated for operation from –40 °C to +105 °C ambient temperature. It includes integrated over-temperature protection (warning at 110–140 °C, critical at 125–155 °C), over-current detection per phase, VDDIO under-voltage lockout, and robust ESD tolerance (2 kV HBM). These features satisfy functional safety requirements for ASIL-B–capable power stages in ADAS and infotainment systems.

Can the DA9224-XXFT1-A's output voltage be set above 1.57 V, and how is this achieved?

Yes, the DA9224-XXFT1-A's output voltage can be extended from the default 0.3–1.57 V range up to 4.3 V using an external resistor divider connected between VOUT and FBAN (for Buck A) or FBBN (for Buck B). The internal reference remains fixed at 0.6 V; the divider scales the feedback voltage to maintain regulation. This method preserves remote sensing functionality and ±1% accuracy, enabling support for I/O rails like 1.8 V, 2.5 V, or 3.3 V without external error amplifiers.