Texas Instruments O917A131TRGZTQ1

Overview

O917A131TRGZTQ1 from Texas Instruments is an automotive-grade power management unit (PMU) integrating five step-down SMPS regulators (including dual-phase 3.5-A/3.5-A configurable to 7-A), five LDOs, a 12-bit sigma-delta GPADC, thermal monitoring, and programmable power sequencing - designed for processor core, memory, and I/O rail supply in automotive digital clusters.

For engineers reviewing the O917A131TRGZTQ1 datasheet, O917A131TRGZTQ1 pinout, O917A131TRGZTQ1 application, or O917A131TRGZTQ1 equivalent, key selection criteria include AEC-Q100 Grade 2 qualification (–40°C to +105°C), OTP-configurable startup sequences, dynamic voltage scaling support on SMPS1/SMPS2/SMPS3, differential remote sensing capability, and dual I²C + SPI control interface compatibility.

Technical Context

The O917A131TRGZTQ1 implements a hierarchical power architecture with one-time programmable (OTP) memory controlling power-up/down sequences and default voltage/GPIO configurations - enabling zero-software boot. Its five SMPS regulators operate at 2.2 MHz (internally synchronized) or accept external clock input (1.7–2.7 MHz) via GPIO_3 for system-level EMC optimization.

Power resource control includes hardware/software Eco-mode™ for light-load efficiency, short-circuit and overcurrent protection per SMPS/LDO, voltage- and current-monitoring via GPADC channels, and thermal shutdown with high-temp warning. The device supports DVS through dedicated I²C and SPI interfaces, with register-accessible voltage-scaling controls for real-time processor adaptation.

Key Specifications

Pinout & Package

Package: 7-mm × 7-mm, 48-pin VQFN (RGZ) with 0.5-mm pitch and exposed thermal pad (PGND).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65910A3RSLR and MAX20029ATI/V+T, the O917A131TRGZTQ1 uniquely combines AEC-Q100 Grade 2 qualification, dual-phase 7-A capability, OTP-based sequencing, and 12-bit GPADC - making it the only option for automotive clusters requiring deterministic boot, high-current core supply, and closed-loop thermal management.

Availability

O917A131TRGZTQ1 is available at Aetrix Electronics and suitable for automotive digital clusters, ADAS camera modules, and navigation head units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for O917A131TRGZTQ1 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 company delivering analog and embedded processing solutions, with leadership in power management ICs for automotive, industrial, and communications markets.

The TPS65917 product line was engineered specifically for automotive processor subsystems - integrating high-current SMPS, precision LDOs, and intelligent sequencing to replace multi-chip power solutions in digital clusters and ADAS ECUs.

FAQ

What automotive qualification does the O917A131TRGZTQ1 meet?

The O917A131TRGZTQ1 is AEC-Q100 qualified at Grade 2 (–40°C to +105°C ambient), with HBM Class 2 and CDM Class C4B ESD ratings. This qualification covers the full device - including all five SMPS regulators, five LDOs, GPADC, and power sequencer - and is documented in the official TI production datasheet SLVSCO4D. No derating or additional testing is required for use in automotive digital clusters or ADAS systems.

Does the O917A131TRGZTQ1 support dynamic voltage scaling (DVS)?

Yes, the O917A131TRGZTQ1 supports DVS on SMPS1, SMPS2, and SMPS3 via dedicated registers accessible through its dual I²C interface (one port reserved exclusively for DVS) or SPI. Voltage steps are programmable in 10-mV or 20-mV increments across 0.7–3.3 V, with hardware- and software-controlled Eco-mode™ enabling seamless transitions between performance and low-power states without interrupting processor operation.

How is power sequencing controlled on the O917A131TRGZTQ1?

Power sequencing on the O917A131TRGZTQ1 is controlled by factory-programmed one-time programmable (OTP) memory, which defines power-up, power-down, and SLEEP↔ACTIVE transition sequences. Default configurations - including output voltages and GPIO states - are loaded automatically at boot. Most settings can be modified via SPI or I²C, but OTP ensures deterministic startup even if firmware fails to initialize, making the O917A131TRGZTQ1 suitable for safety-critical automotive applications.

What is the function of the GPIO_3 pin on the O917A131TRGZTQ1?

GPIO_3 on the O917A131TRGZTQ1 serves as the SYNCDCDC input, accepting an external clock signal (1.7–2.7 MHz) to synchronize all internal SMPS switching. This capability allows multiple O917A131TRGZTQ1 devices - or other compatible TI PMUs - to operate on a common clock, reducing system-level EMI peaks and simplifying EMC filter design. When unused, GPIO_3 defaults to a programmable open-drain GPIO with pull-down.

Can the O917A131TRGZTQ1 monitor its own temperature and supply voltages?

Yes, the O917A131TRGZTQ1 integrates a 12-bit sigma-delta GPADC with eight input channels - two external (ADCIN1/ADCIN2) and six internal - enabling direct measurement of die temperature, SMPS/LDO output currents, supply voltages (e.g., VCCA, VIO_IN), and VCC_SENSE. Internal temperature readings are factory-calibrated to ±2°C accuracy and accessible via I²C/SPI registers, allowing host processors to implement thermal throttling or predictive maintenance in automotive applications.