Texas Instruments TPS6590376ZWST

Overview

TPS6590376ZWST from Texas Instruments is a highly integrated power management unit (PMU) for application processors and SoMs, featuring seven configurable step-down SMPS regulators (including 6-A, 4-A, 3-A, dual-2-A, and dual-1-A outputs), seven general-purpose LDOs (300-mA, 200-mA, 100-mA, 50-mA, and low-noise variants), a 16-MHz crystal oscillator, RTC with alarm wake-up, 12-bit GPADC with three external channels, and thermal monitoring with shutdown. It targets industrial HMI and PLC systems requiring precise multi-rail sequencing.

For engineers reviewing the TPS6590376ZWST datasheet, TPS6590376ZWST pinout, TPS6590376ZWST application, or TPS6590376ZWST equivalent, key selection considerations include OTP-programmable power-up/down sequences, dual I²C + SPI control interfaces, DVS-capable SMPS regulation, differential remote sensing on multi-phase rails, and support for external clock synchronization between 1.7–2.7 MHz.

Technical Context

The TPS6590376ZWST implements a hierarchical power architecture with one-time programmable (OTP) sequencer logic governing startup, sleep/active transitions, and fault recovery. Its seven SMPS regulators support flexible phase configurations: SMPS12 and SMPS45 operate in dual-phase mode with digital voltage scaling (DVS); SMPS123 and SMPS457 enable triple-phase operation up to 9 A; remaining SMPS rails operate in single-phase mode with 10- or 20-mV output steps.

Control is implemented via two dedicated interfaces: one I²C port reserved exclusively for DVS commands, and a second general-purpose I²C plus SPI interface for configuration, monitoring, and register access. The device integrates a 32-kHz RC oscillator for sequencing and a 16-MHz crystal oscillator for fast, stable clock generation, with buffered 32-kHz output available for system timing.

Key Specifications

Pinout & Package

TPS6590376ZWST is housed in a 12.00 mm × 12.00 mm, 169-ball nFBGA package with 0.8-mm pitch. The substrate uses PBKG (power ball ground) balls for thermal and electrical grounding, and includes dedicated analog/digital ground planes (GND_ANA, GND_DIG) and isolated power grounds per SMPS channel.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS659039ZWS, TPS6590376ZWST offers proven field reliability and broader design documentation; versus TPS65910AZWST, it delivers higher current density, triple-phase flexibility, and faster startup - critical for high-performance industrial SoMs.

Availability

TPS6590376ZWST is available at Aetrix Electronics and suitable for factory automation, programmable logic controllers, and system-on-module applications requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for TPS6590376ZWST 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 power management technologies, with decades of industrial-grade product experience.

The TPS659037 family was designed specifically for high-reliability industrial SoCs and application processors, integrating sequencing, regulation, monitoring, and clocking into a single PMU to reduce system complexity and improve power integrity.

FAQ

What is the maximum supported output current for the TPS6590376ZWST's primary SMPS rail?

The TPS6590376ZWST supports up to 6 A on its SMPS12 rail, configurable in dual-phase mode with digital voltage scaling. This rail can be combined with SMPS45 (4 A) to form a 9-A triple-phase regulator - verified in the Electrical Characteristics section for SMPS123 and SMPS457 configurations. All current ratings assume proper thermal design and recommended external components per TI SLIS165G.

Does the TPS6590376ZWST support external clock synchronization for its SMPS regulators?

Yes, the TPS6590376ZWST supports external clock synchronization via the SYNCDCDC pin, accepting input frequencies from 1.7 MHz to 2.7 MHz. This allows deterministic switching alignment across all SMPS regulators to minimize conducted EMI and simplify filter design - confirmed in Section 4.11 (Electrical Characteristics: DC-DC Clock Sync) and Figure 1-4 of the datasheet.

How many independent power rails does the TPS6590376ZWST provide, and what types are they?

The TPS6590376ZWST provides seven step-down SMPS regulators and seven general-purpose LDOs for external use. The SMPS rails include one 6-A, one 4-A, one 3-A, two 2-A, and two 1-A outputs; LDOs comprise two 300-mA, two 200-mA, one 100-mA USB, one 50-mA, and one low-noise 100-mA variant - detailed in Section 1.1 Features and Table 1-1 (Device Information).

Can the TPS6590376ZWST perform real-time voltage scaling (DVS) during operation?

Yes, the TPS6590376ZWST supports real-time digital voltage scaling (DVS) on multiple SMPS rails using either its dedicated DVS I²C interface (I2C2_SCL_SCE/I2C2_SDA_SDO) or SPI commands. DVS is explicitly enabled for SMPS12, SMPS45, SMPS3, SMPS6, SMPS7, SMPS8, and SMPS9 - confirmed in Section 1.1 Features and Section 5.3 Feature Description.

What packaging and thermal characteristics define the TPS6590376ZWST?

The TPS6590376ZWST is packaged in a 12.00 mm × 12.00 mm, 169-ball nFBGA (ZWS) with 0.8-mm pitch. Its thermal resistance θ_JA is 24.2°C/W (JEDEC High-K board), and maximum junction temperature is 125°C - specified in Section 4.4 (Thermal Information) and Table 10-1 (Orderable Addendum). The package includes PBKG balls for enhanced thermal dissipation.