Texas Instruments UCD90160ARGCR

Overview

UCD90160ARGCR from Texas Instruments is a 16-rail PMBus/I²C-addressable power supply sequencer and monitor with integrated 12-bit ADC, closed-loop margining for up to 10 rails, programmable watchdog timer, and ACPI-compliant pin-selected rail states. It supports real-time voltage monitoring (every 400 μs), four per-rail UV/OV thresholds, and nonvolatile fault logging - deployed in multi-rail server and networking power systems.

For engineers reviewing the UCD90160ARGCR datasheet, UCD90160ARGCR pinout, UCD90160ARGCR application, or UCD90160ARGCR equivalent, key selection considerations include rail count scalability, PMBus 1.1 compliance, 15.26 kHz–125 MHz PWM margining capability, GPIO-configurable fault response coordination, and VQFN-64 thermal performance (R_θJA = 26.4°C/W).

Technical Context

The UCD90160ARGCR implements a deterministic sequencing engine with time-, rail-, and pin-based dependencies, supported by a 12-bit ADC (2.5 V ±0.5% internal reference) sampling all 16 monitored rails every 400 μs. Its Boolean logic builder enables configurable GPO responses using GPI inputs, POWER_GOOD status, and fault flags.

It integrates dual-domain I/O: 26 GPIOs (8 configurable as GPIs, 16 as GPOs), eight FPWM outputs (15.26 kHz–125 MHz), four fixed-frequency PWMs (1 kHz/10 kHz/0.93 Hz–7.8125 MHz), and full JTAG + PMBus/I²C/SMBus interfaces - all operating from 3.0–3.6 V supplies across –40°C to +110°C ambient.

Key Specifications

Pinout & Package

Package: 64-pin VQFN (9.00 mm × 9.00 mm), thermally enhanced with exposed pad tied to ground plane. R_θJB = 1.7°C/W enables high-power sequencing in compact layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar power supply sequencing and monitoring applications.

Compared with UCD90160ARGCR, the UCD90124ARGCT reduces rail count and eliminates margining and JTAG, while the LM9926SQ/NOPB removes PMBus, telemetry, and flash logging entirely - making UCD90160ARGCR the only option supporting full ACPI, closed-loop margining, and fault forensics in 16-rail enterprise systems.

Availability

UCD90160ARGCR is available at Aetrix Electronics and suitable for server power management, wireless infrastructure, and data center switching applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for UCD90160ARGCR 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 ICs, embedded processors, and power management solutions for industrial, automotive, and communications markets.

The UCD90160ARGCR belongs to TI's Fusion Digital Power sequencer family, engineered specifically for high-reliability, multi-rail power system control in enterprise computing and wired/wireless infrastructure equipment.

FAQ

What is the maximum number of voltage rails the UCD90160ARGCR can monitor and sequence?

The UCD90160ARGCR supports up to 16 independent voltage rails. Each rail can be configured with enable control, analog monitoring (via MON1–MON16), power-good thresholds, and sequencing dependencies. All 16 rails are sampled simultaneously every 400 μs using the integrated 12-bit ADC, ensuring deterministic timing and synchronized health assessment across complex power domains in the UCD90160ARGCR.

Does the UCD90160ARGCR support closed-loop voltage margining, and how many rails can it adjust?

Yes, the UCD90160ARGCR supports closed-loop margining for up to 10 rails using its eight FPWM outputs (15.26 kHz–125 MHz) and two additional PWM outputs. Margining adjusts actual rail voltage toward user-defined low/high thresholds by modulating feedback nodes of compatible DC-DC converters. This capability is implemented directly in hardware and does not require host processor intervention during UCD90160ARGCR operation.

What interfaces does the UCD90160ARGCR provide for configuration and telemetry?

The UCD90160ARGCR provides PMBus 1.1 (I²C/SMBus physical layer), JTAG, and GPIO-based control interfaces. PMBus enables full read/write access to configuration registers, real-time telemetry (voltage, temperature, status), and fault logs. JTAG supports boundary scan and debug. GPIOs allow pin-triggered sequencing, Boolean logic outputs, and ACPI state selection - all configurable via TI's Fusion Digital Power Designer software for the UCD90160ARGCR.

How does the UCD90160ARGCR handle fault conditions and ensure system reliability?

The UCD90160ARGCR detects undervoltage, overvoltage, and timeout faults per rail using four programmable thresholds. Upon fault detection, it executes user-configured responses - including immediate shutdown, sequenced ramp-down, rail restart, or cascaded fault propagation via PMBALERT. All faults are timestamped and stored in on-chip nonvolatile flash (up to 12 entries), enabling forensic analysis without external logging - a core reliability feature of the UCD90160ARGCR.

What is the package type and thermal performance of the UCD90160ARGCR?

The UCD90160ARGCR is housed in a 64-pin VQFN package (9.00 mm × 9.00 mm) with an exposed thermal pad. Its thermal metrics include R_θJA = 26.4°C/W and R_θJB = 1.7°C/W, enabling efficient heat dissipation in high-density server and networking PCBs. The package supports standard reflow profiles and is qualified for industrial temperature operation (–40°C to +110°C ambient), critical for sustained UCD90160ARGCR deployment in demanding environments.