Texas Instruments O917A151TRGZRQ1

Overview

O917A151TRGZRQ1 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. It operates from 3.135 V to 5.25 V input, delivers up to 3.5 A per SMPS channel, supports dynamic voltage scaling (DVS), and is qualified for –40°C to +105°C ambient operation in digital cluster and ADAS systems.

For engineers reviewing the O917A151TRGZRQ1 datasheet, O917A151TRGZRQ1 pinout, O917A151TRGZRQ1 application, or O917A151TRGZRQ1 equivalent, key selection criteria include AEC-Q100 Grade 2 qualification, OTP-configurable power-up/down sequences, dual-phase SMPS synchronization via GPIO_3, differential remote sensing on SMPS1/SMPS2, and integrated ADC-based system health monitoring.

Technical Context

The O917A151TRGZRQ1 implements a hierarchical power architecture with one-time programmable (OTP) memory controlling default power sequencing, voltage settings, and GPIO configurations-enabling boot without host software. Its five SMPS regulators include two 3.5-A channels configurable in dual-phase mode with differential feedback, while three additional SMPS channels deliver 3 A, 2 A, and 1.5 A respectively.

Control is provided via dual I²C interfaces (one dedicated to DVS) and SPI, with hardware- and software-controlled Eco-mode for light-load efficiency. The integrated 12-bit GPADC monitors two external voltages plus internal supply rails, output currents, and die temperature, feeding real-time data to the host processor through interrupt-driven event handling.

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 power management applications.

Compared with TPS65910A3RSLR and MAX20029ATGB/V+T, the O917A151TRGZRQ1 uniquely combines AEC-Q100 Grade 2 qualification, OTP-configurable sequencing, dual-phase 7-A SMPS, and integrated 12-bit GPADC - making it the only option for automotive SoC platforms requiring deterministic boot, real-time health monitoring, and high-current scalable core supply.

Availability

O917A151TRGZRQ1 is available at Aetrix Electronics and suitable for automotive digital cluster, ADAS camera modules, and navigation head units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for O917A151TRGZRQ1 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 specializing in analog, embedded processing, and power management technologies, with deep expertise in automotive electronics and functional safety design.

The TPS65917 product line was developed specifically for automotive infotainment and ADAS SoC power delivery, emphasizing AEC-Q100 compliance, OTP-configurable sequencing, and integrated telemetry to reduce system complexity and improve reliability.

FAQ

What is the operating temperature range for the O917A151TRGZRQ1?

The O917A151TRGZRQ1 is qualified for automotive Grade 2 operation with a guaranteed ambient temperature range of –40°C to +105°C. This rating is validated per AEC-Q100 standards and applies to all integrated functions-including SMPS regulators, LDOs, GPADC, and power sequencer-ensuring reliable performance in under-dash and engine-compartment-adjacent locations where thermal stress is highest. The O917A151TRGZRQ1 includes thermal shutdown and high-temperature warning features that activate within this range.

Does the O917A151TRGZRQ1 support dynamic voltage scaling (DVS)?

Yes, the O917A151TRGZRQ1 supports hardware- and software-controlled DVS on its 3.5-A SMPS1/SMPS2 channels and 3-A SMPS3 channel. Voltage can be adjusted in 10-mV or 20-mV steps across a 0.7-V to 3.3-V range using SPI or the dedicated DVS I²C interface. This capability enables real-time adaptation of processor core voltage to workload demands, directly reducing dynamic power consumption in automotive SoCs. The O917A151TRGZRQ1 implements DVS without requiring external DACs or control logic.

How many power rails does the O917A151TRGZRQ1 generate?

The O917A151TRGZRQ1 generates ten regulated power rails: five step-down SMPS outputs (SMPS1–SMPS5) and five LDO outputs (LDO1–LDO5, plus LDOVRTC and LDOVANA). SMPS1 and SMPS2 can be configured in dual-phase mode to deliver a single 7-A output, while SMPS3 (3-A), SMPS4 (2-A), and SMPS5 (1.5-A) operate independently. LDOs provide low-noise, low-current supplies-for example, LDO3 delivers 100 mA with low-noise performance up to 50 mA. All rails are individually configurable via OTP or runtime interfaces.

What interfaces does the O917A151TRGZRQ1 support for configuration and control?

The O917A151TRGZRQ1 supports SPI, two I²C interfaces (I²C1 for general configuration and I²C2 dedicated to DVS), and GPIO-based control signals such as POWERHOLD, NSLEEP, and RESET_IN. I²C2 operates at up to 1 MHz and is isolated from general-purpose register access to ensure deterministic DVS timing. SPI supports 4-wire mode with configurable clock polarity and phase. All interfaces allow readback of status registers-including power-good states, thermal warnings, and ADC conversion results-enabling full system visibility without additional monitoring ICs. The O917A151TRGZRQ1 does not require external level shifters for standard 1.8-V or 3.3-V host I/O.

Is the O917A151TRGZRQ1 pin-compatible with other TPS659xx-Q1 devices?

No, the O917A151TRGZRQ1 is not pin-compatible with other TPS659xx-Q1 variants such as TPS65912-Q1 or TPS65917A-Q1. While sharing the same 48-pin VQFN (RGZ) package footprint, pin assignments differ significantly-especially for SMPS feedback inputs (e.g., SMPS1_FDBK/SMPS2_FDBK), GPIO multiplexing (e.g., GPIO_3 as SYNCDCDC), and ADC inputs (ADCIN1/ADCIN2). PCB layout must be designed specifically for the O917A151TRGZRQ1; migration from other family members requires board revision and firmware adaptation due to register map and functional differences.