Texas Instruments O917A14FTRGZRQ1

Overview

O917A14FTRGZRQ1 from Texas Instruments is an automotive-grade power management unit (PMU) integrating five step-down SMPS regulators (including dual-phase 7-A capability), five LDOs, a 12-bit sigma-delta GPADC, thermal monitoring, and configurable power sequencing - designed to supply processor cores, memory, I/O, and low-noise domains in ADAS and digital cluster systems.

For engineers reviewing the O917A14FTRGZRQ1 datasheet, O917A14FTRGZRQ1 pinout, O917A14FTRGZRQ1 application, or O917A14FTRGZRQ1 equivalent, key selection criteria include AEC-Q100 Grade 2 qualification (–40°C to +105°C), OTP-programmable power-up/down sequences, dynamic voltage scaling support in 3.5-A/3-A SMPS, dual-phase synchronization via GPIO_3, and integrated short-circuit/thermal protection with POWERGOOD signaling.

Technical Context

The O917A14FTRGZRQ1 implements a hierarchical power architecture: five independent SMPS regulators (SMPS1–SMPS5) with differential remote sensing on SMPS1/SMPS2 in dual-phase mode, and five LDOs including one low-noise 100-mA variant for analog rails. All SMPS operate at a default 2.2-MHz switching frequency with external clock synchronization capability (1.7–2.7 MHz).

Power sequencing is controlled by factory-programmed OTP memory supporting configurable startup/shutdown transitions between OFF, SLEEP, and ACTIVE states, plus three programmable digital outputs. Control is delivered via two I²C interfaces (one dedicated to DVS) and one SPI interface, with interrupt-driven event handling for thermal warnings, short circuits, and ADC threshold violations.

Key Specifications

Pinout & Package

Package: 48-pin VQFN (RGZ), 7.0 mm × 7.0 mm body, 0.5-mm pitch, with exposed thermal pad (PGND). Designed for automotive thermal and mechanical reliability per AEC-Q100.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar power management applications.

Compared with TPS65910A3RSLR and MAX20029ATGB/V+T, the O917A14FTRGZRQ1 uniquely combines AEC-Q100 Grade 2 qualification, 7-A dual-phase SMPS, OTP-based deterministic boot, and integrated 12-bit GPADC - making it the only option for ASIL-B–aligned processor power delivery in digital clusters and ADAS ECUs.

Availability

O917A14FTRGZRQ1 is available at Aetrix Electronics and suitable for automotive digital cluster, ADAS camera module, and navigation head unit designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for O917A14FTRGZRQ1 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive ICs, with decades of experience in power management innovation.

The TPS65917 product line was engineered specifically for automotive infotainment and ADAS processors - integrating high-current SMPS, precision LDOs, and safety-critical sequencing into a single AEC-Q100-qualified package.

FAQ

What is the operating temperature range certified for the O917A14FTRGZRQ1?

The O917A14FTRGZRQ1 is AEC-Q100 qualified for Grade 2 operation, with a guaranteed ambient operating temperature range of –40°C to +105°C. This rating is validated through device-level testing including temperature cycling, high-temperature operating life, and package reliability - confirming suitability for under-dash and center-stack automotive environments where thermal stress is significant. The O917A14FTRGZRQ1 maintains full electrical performance across this range without derating.

Does the O917A14FTRGZRQ1 support dynamic voltage scaling (DVS) for processor cores?

Yes, the O917A14FTRGZRQ1 supports hardware- and software-controlled DVS in its 3.5-A SMPS1 and 3-A SMPS3 regulators via dedicated I²C2 interface or SPI register writes. Voltage can be adjusted in 10-mV or 20-mV steps across the 0.7-V to 3.3-V range, enabling real-time adaptation to CPU workload changes. The O917A14FTRGZRQ1 also provides output current measurement capability in these rails - essential for closed-loop DVS algorithms in automotive SoCs.

How is power sequencing controlled on the O917A14FTRGZRQ1?

Power sequencing on the O917A14FTRGZRQ1 is implemented using one-time programmable (OTP) memory that stores factory-configured power-up and power-down sequences, including transitions between OFF, SLEEP, and ACTIVE states. These sequences are executed autonomously without host processor intervention. Most static settings - such as output voltages and GPIO configurations - can be modified post-factory via SPI or I²C, but the core sequencing logic remains OTP-locked for safety and repeatability. The O917A14FTRGZRQ1 also includes OTP bit-integrity error detection to halt startup if corruption is detected.

What protection features does the O917A14FTRGZRQ1 include for automotive reliability?

The O917A14FTRGZRQ1 integrates multiple automotive-grade protections: short-circuit protection on all SMPS and LDOs, thermal shutdown at 150°C with hysteresis, VSYS brownout detection with programmable thresholds, and power-good monitoring with voltage and overcurrent indication. It also includes a watchdog timer to detect software lockup and automatic ADC conversions for continuous health monitoring. All fault events generate maskable interrupts via the INT pin, allowing the host processor to log errors or initiate safe shutdown - critical for ISO 26262-aligned systems. The O917A14FTRGZRQ1's design ensures fail-safe behavior under fault conditions without external circuitry.

Can the O917A14FTRGZRQ1 synchronize its SMPS switching frequency to an external clock?

Yes, the O917A14FTRGZRQ1 supports external clock synchronization via the GPIO_3 pin configured as SYNCDCDC input. It accepts an external clock signal between 1.7 MHz and 2.7 MHz, allowing all five SMPS regulators to align their switching edges - significantly reducing system-level electromagnetic interference (EMI) in multi-PMU architectures. This capability is especially valuable in automotive platforms where multiple O917A14FTRGZRQ1 devices power different subsystems (e.g., cluster + ADAS + infotainment), enabling coherent EMI spectrum management. The O917A14FTRGZRQ1 retains its default 2.2-MHz internal oscillator as fallback if the external clock is lost.