Texas Instruments O917A154TRGZRQ1

Overview

O917A154TRGZRQ1 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 with eight channels, thermal monitoring, and programmable power sequencing - used to supply processor cores, memory, I/O, and low-noise domains in automotive digital clusters.

For engineers reviewing the O917A154TRGZRQ1 datasheet, O917A154TRGZRQ1 pinout, O917A154TRGZRQ1 application, or O917A154TRGZRQ1 equivalent, key selection considerations include AEC-Q100 Grade 2 qualification (–40°C to +105°C), OTP-configurable startup sequences, dynamic voltage scaling support in SMPS1/SMPS3, differential remote sensing on dual-phase outputs, and dual I²C + SPI control interfaces.

Technical Context

The O917A154TRGZRQ1 implements a hierarchical power architecture with one-time-programmable (OTP) sequencing logic controlling power-up/down transitions between OFF, SLEEP, and ACTIVE states; it supports hardware- and software-triggered DVS via dedicated I²C and SPI interfaces. The device uses internal 2.2-MHz switching frequency for EMC optimization and allows external clock synchronization (1.7–2.7 MHz) via GPIO_3 (SYNCDCDC).

Its analog subsystem includes a 12-bit sigma-delta GPADC with two external inputs for system voltage/current/temperature monitoring, integrated short-circuit and thermal shutdown protection, and independent bandgap reference (VBG) with REFGND. All five SMPS regulators feature internal soft-start, power-good indication, and overcurrent detection; three LDOs support bypass mode, and LDO5 delivers low-noise performance up to 50 mA.

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 TPS65910A3RSLRQ1 and MAX20029ATGB/V+T, the O917A154TRGZRQ1 provides higher integration (5 SMPS + 5 LDO + ADC + sequencer), automotive-grade OTP sequencing assurance, and dual-phase capability essential for modern ADAS SoCs - making it the only option supporting simultaneous high-current core supply and real-time system health monitoring.

Availability

O917A154TRGZRQ1 is available at Aetrix Electronics and suitable for automotive digital cluster, ADAS domain controller, and navigation system designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for O917A154TRGZRQ1 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 and embedded processing technologies, with leadership in automotive power management and high-reliability IC design.

The TPS65917 product line was developed specifically for automotive infotainment and ADAS processors, integrating sequencing, conversion, monitoring, and interface functions into a single AEC-Q100 qualified package to reduce system complexity and improve functional safety compliance.

FAQ

What is the AEC-Q100 qualification grade for O917A154TRGZRQ1?

O917A154TRGZRQ1 is qualified to AEC-Q100 Grade 2, specifying operation from –40°C to +105°C ambient temperature. It also meets HBM Class 2 and CDM Class C4B ESD requirements. This qualification is factory-verified and documented in the official TPS65917-Q1 production datasheet (SLVSCO4D), confirming its suitability for passenger compartment and engine bay–adjacent automotive applications where thermal robustness is mandatory. The O917A154TRGZRQ1 part number corresponds directly to this qualified device variant.

Does O917A154TRGZRQ1 support dynamic voltage scaling (DVS) for processor cores?

Yes, O917A154TRGZRQ1 supports hardware- and software-controlled DVS on SMPS1 and SMPS3 via dedicated I²C and SPI interfaces. Voltage can be adjusted in 10-mV or 20-mV steps across a 0.7–3.3-V range, enabling real-time coordination with ARM-based processor frequency scaling. DVS registers are accessible through the device's register map, and the O917A154TRGZRQ1 implementation includes built-in slew-rate control to prevent overshoot during transitions - a capability confirmed in Section 4.6 and 4.7 of the SLVSCO4D datasheet.

Can O917A154TRGZRQ1 synchronize its SMPS switching frequency to an external clock?

Yes, O917A154TRGZRQ1 supports external clock synchronization via the GPIO_3 pin configured as SYNCDCDC input, accepting frequencies from 1.7 MHz to 2.7 MHz. This allows multiple O917A154TRGZRQ1 devices (or other compatible PMUs) to align switching edges, significantly reducing system-level conducted and radiated EMI. The internal default is 2.2 MHz, but external sync is explicitly enabled in the functional diagram and signal description tables of the SLVSCO4D datasheet - a feature unique to the O917A154TRGZRQ1 among its family variants.

What type of ADC is integrated into O917A154TRGZRQ1 and how many channels does it have?

O917A154TRGZRQ1 integrates a 12-bit sigma-delta general-purpose ADC (GPADC) with eight total input channels: six internal (including die temperature, VCCA, SMPS output currents) and two external (ADCIN1, ADCIN2). This ADC enables continuous system health monitoring without external components. Conversion results are accessible via I²C/SPI, and threshold-based interrupts can trigger host processor action - functionality fully detailed in Sections 4.10 and 5.8 of the SLVSCO4D datasheet for the O917A154TRGZRQ1 device.

Is OTP programming required to operate O917A154TRGZRQ1 out-of-box?

No, O917A154TRGZRQ1 ships with factory-programmed OTP memory containing default power-up sequences, voltage settings, and GPIO configurations - enabling full operation without any software initialization. Users may optionally reconfigure static parameters (e.g., output voltages, DVS tables) via SPI or I²C, but the O917A154TRGZRQ1 will power all rails in correct order and deliver specified outputs immediately upon VSYS application. OTP bit-integrity checking ensures safe startup even if configuration corruption is detected, as described in Section 1.1 and 5.13 of the SLVSCO4D datasheet.