Renesas DA9224-XXFT1-AT

Overview

DA9224-XXFT1-AT from Renesas Electronics is a dual-output automotive-grade PMIC integrating two independent dual-phase synchronous buck converters, each delivering up to 8 A output current. It supports programmable output voltages from 0.3 V to 1.57 V (or up to 4.3 V with external resistor divider), operates from 2.8 V to 5.5 V input, and features 3 MHz switching frequency, ±1 % static voltage accuracy, and remote sensing for point-of-load regulation in ADAS and infotainment CPU/GPU/DDR power rails.

For engineers reviewing the DA9224-XXFT1-AT datasheet, DA9224-XXFT1-AT pinout, DA9224-XXFT1-AT application, or DA9224-XXFT1-AT equivalent, this page delivers verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options - all aligned to AEC-Q100 Grade 2 qualification and 66-ball TFBGA 0.8 mm pitch packaging.

Technical Context

The DA9224-XXFT1-AT implements two fully independent dual-phase buck regulators (Buck A and Buck B), each with dedicated LX, FBAP/FBAN, and VDD/VSS power domains. Its 3 MHz fixed-frequency PWM operation enables use of low-profile 0.22 µH inductors, while automatic phase shedding optimizes light-load efficiency without mode transition artifacts.

It integrates full power switches (29 mΩ PMOS / 21 mΩ NMOS per phase), supports I²C/SPI-compatible 2-/4-wire interfaces with configurable address via GPI, and provides dynamic voltage control (DVC) through register writes or dedicated DVS pin - enabling adaptive supply scaling for multi-core processors under real-time load conditions.

Key Specifications

Pinout & Package

DA9224-XXFT1-AT uses a 66-ball Thin Fine-Pitch Ball Grid Array (TFBGA) package with 0.8 mm ball pitch and integrated thermal pad. The layout separates high-power (LX, VDD, VSS), analog sensing (FBAP, FBAN, FBBP, FBBN), and digital interface (SCL, SDA, nCS, nIRQ) balls into distinct zones to minimize noise coupling and simplify PCB routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPQ8633BGLE-Z and TPS65917B1RSLR, the DA9224-XXFT1-AT uniquely delivers dual 8 A outputs with independent remote sensing, AEC-Q100 Grade 2 validation, and hardware DVC support - making it the only option qualified for ASIL-B-relevant ADAS power domains without design compromise.

Availability

DA9224-XXFT1-AT is available at Aetrix Electronics and suitable for automotive in-vehicle infotainment, ADAS camera ECUs, and digital instrument clusters requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for DA9224-XXFT1-AT 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 management, and automotive SoCs, with deep expertise in functional safety and ASIL-compliant design.

The DA9224-XXFT1-AT belongs to Renesas' automotive-qualified PMIC portfolio, engineered specifically for high-transient, multi-rail power delivery in safety-critical ADAS and infotainment systems demanding AEC-Q100 Grade 2 operation.

FAQ

What is the maximum output current per buck channel of the DA9224-XXFT1-AT?

The DA9224-XXFT1-AT integrates two independent dual-phase buck converters, each capable of delivering up to 8 A continuous output current. This is achieved using integrated 29 mΩ PMOS and 21 mΩ NMOS power switches per phase, with thermal derating applied above 70 °C ambient per the 34.2 °C/W θJA specification. The DA9224-XXFT1-AT datasheet confirms 8 A per buck under recommended operating conditions (−40 °C to +105 °C, 2.8 V–5.5 V input).

Does the DA9224-XXFT1-AT support remote voltage sensing for both outputs?

Yes, the DA9224-XXFT1-AT provides dedicated remote sensing for both buck channels: FBAP/FBAN for Buck A and FBBP/FBBN for Buck B. Each pair forms a differential input that compensates for PCB trace resistance between the IC and point-of-load, maintaining ±1 % static accuracy even with >100 mΩ path impedance. This capability is explicitly documented in the DA9224-XXFT1-AT datasheet Figures 2 and Table 1.

Can the DA9224-XXFT1-AT be used in systems requiring AEC-Q100 Grade 2 qualification?

Yes, the DA9224-XXFT1-AT is explicitly qualified to AEC-Q100 Grade 2, supporting operation from −40 °C to +105 °C ambient temperature with full functionality and reliability validation. The datasheet states Grade 2 qualification on page 1 and lists TJ_OP = −40 °C to +125 °C and TA = −40 °C to +105 °C in Table 4 - confirming compliance for under-dash and display cluster applications.

What communication interfaces does the DA9224-XXFT1-AT support?

The DA9224-XXFT1-AT supports both 2-wire (I²C-compatible) and 4-wire (SPI-like) serial interfaces via shared pins SCL/SK, SDA/SI, and nCS/GPI4. It operates in Standard, Fast, and Fast+ modes up to 1 MHz, with configurable I²C address via GPI inputs. All timing parameters - including tSU_STA, tW_CL, and VOL levels - are specified in Tables 8 and 9 of the DA9224-XXFT1-AT datasheet.

How does Dynamic Voltage Control (DVC) function on the DA9224-XXFT1-AT?

Dynamic Voltage Control (DVC) on the DA9224-XXFT1-AT allows real-time adjustment of output voltage either via register writes over the I²C/SPI interface or through a dedicated DVS input pin. When using the DVS pin, an external DAC or GPIO-driven voltage sets the target VOUT within the 0.3 V–1.57 V range. This feature is detailed in Section 7.1.4 and Figure 14 of the DA9224-XXFT1-AT datasheet, enabling adaptive power scaling for automotive application processors.