Texas Instruments TPS53830ARWZR

Overview

TPS53830ARWZR from Texas Instruments is a digital multi-output step-down converter optimized for DDR5 on-DIMM power delivery, integrating three regulated outputs (VDD=1.1V/12A, VDDQ=1.1V/6A, VPP=1.8V/5A) with D-CAP+™ control, I²C/I³C telemetry, and differential remote sensing. It operates from 4.5 V to 15 V input and supports -40°C to +105°C ambient.

For engineers reviewing the TPS53830ARWZR datasheet, TPS53830ARWZR pinout, TPS53830ARWZR application, or TPS53830ARWZR equivalent, key selection factors include per-phase current limiting, programmable switching frequency (500 kHz–1.375 MHz), internal loop compensation, persistent black-box register, and thermal performance in the 5 mm × 5 mm QFN package.

Technical Context

The TPS53830ARWZR implements a D-CAP+™ adaptive-on-time control architecture enabling sub-100 ns transient response for DDR5 memory voltage rails. It supports configurable 3-output (dual-phase VDD + single-phase VDDQ/VPP) or 4-output (four independent phases) operation with cycle-by-cycle current limiting per phase.

Differential remote sensing is applied independently to VDD, VDDQ, and VPP outputs to maintain tight regulation under high-current load transients. Telemetry via I²C/I³C includes real-time reporting of output voltage, current, temperature, power, and fault status with overvoltage, undervoltage, overcurrent, and overtemperature protection.

Key Specifications

Pinout & Package

TPS53830ARWZR is housed in a thermally enhanced 5 mm × 5 mm, 35-pin VQFN-HR (RWZ) package with exposed PowerPad™ for low-θ_JA thermal performance. Pin functions are defined per TI SLUSEX7 datasheet Figure 3-1 and Table 6-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail DDR5 PMIC applications.

Compared with TPS53830ARWZR, TPS53832ARWZR adds an integrated 1.0 V LDO for RCD support but shares identical VDD/VDDQ/VPP capability and telemetry features, while ISL99390HRZ-T provides comparable output specs but lacks I³C and persistent register-making it suitable only for SMBus-limited legacy platforms.

Availability

TPS53830ARWZR is available at Aetrix Electronics and suitable for DDR5 server DIMMs, AI accelerator memory modules, and HPC compute node power designs requiring stable component supply, full production traceability, and long-term lifecycle support.

Supply support for TPS53830ARWZR 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 designing analog, embedded processing, and power management ICs for industrial, automotive, and enterprise applications.

The TPS53830A product line delivers highly integrated, telemetry-enabled PMICs specifically engineered for JEDEC-compliant DDR5 on-DIMM power delivery with emphasis on thermal resilience, fault observability, and layout simplicity.

FAQ

What is the maximum output current capability of the TPS53830ARWZR for the VDD rail?

The TPS53830ARWZR supports up to 12 A on the VDD rail using dual-phase operation (SWA + SWB). This is achieved through interleaved switching with per-phase current limiting and D-CAP+™ control to maintain regulation under fast load transients typical of DDR5 memory access patterns. The TPS53830ARWZR datasheet specifies this rating at 1.1 V output with 4.5–15 V input and ambient temperatures from -40°C to +105°C.

Does the TPS53830ARWZR support I³C interface in addition to I²C?

Yes, the TPS53830ARWZR supports both I²C and I³C bus interfaces for telemetry and configuration. I³C enables higher-speed communication (up to 12.5 Mbps) and multi-drop topology with standardized command sets, allowing efficient real-time monitoring of voltage, current, temperature, and fault status across multiple DIMMs. The TPS53830ARWZR implements I³C v1.1.1 features including in-band interrupt and dynamic address assignment.

What package type and thermal characteristics does the TPS53830ARWZR use?

The TPS53830ARWZR uses a 5 mm × 5 mm, 35-pin VQFN-HR (RWZ) package with exposed PowerPad™ for enhanced thermal dissipation. Its MSL rating is Level-2-260°C-1 year, and it operates across -40°C to +105°C ambient. Thermal resistance θ_JA is 24.5°C/W (JEDEC high-K board), enabling reliable operation in thermally constrained DIMM slots without forced airflow. The TPS53830ARWZR package drawing and solder reflow profile are documented in TI SLUSEX7.

How does the TPS53830ARWZR implement remote sensing for DDR5 voltage rails?

The TPS53830ARWZR provides dedicated differential remote sense inputs (SWx_FB_P/N) for VDD, VDDQ, and VPP outputs - eight pins total - enabling Kelvin connections directly at the DRAM ball pads. This compensates for PCB trace resistance and ensures ±0.5% DC regulation accuracy at point-of-load despite high currents (up to 12 A). The TPS53830ARWZR applies this sensing continuously during operation, not just at startup.

What protection features are integrated into the TPS53830ARWZR?

The TPS53830ARWZR integrates overvoltage (OVP), undervoltage (UVP), overcurrent (OCP), and overtemperature (OTP) protections on all three main outputs. Each phase has cycle-by-cycle current limiting, and fault conditions trigger latched or hiccup-mode responses depending on configuration. All protections are hardware-based with independent comparators and can be monitored via I²C/I³C telemetry. The TPS53830ARWZR also includes a persistent black-box register that logs the last fault event before shutdown.