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Texas Instruments UCD90320UZWSR
- Part No.:
- UCD90320UZWSR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 169-LFBGA
- Datasheet:
-
UCD90320UZWSR.pdf
- Description:
- IC SUPERVISOR 32 CHAN 169NFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,193
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Product details
Overview
UCD90320UZWSR from Texas Instruments is a 32-rail PMBus™ power sequencer and system manager in a 12.0 mm × 12.0 mm BGA-169 package, supporting ultra-low-alpha (ULA) mold compound and single-event upset (SEU) detection for high-reliability applications. It monitors up to 24 voltage/current/temperature rails via integrated 12-bit ADCs, sequences 32 ENx outputs, performs closed-loop margining on 24 rails, and logs faults nonvolatily - used in server power management subsystems requiring coordinated rail startup/shutdown.
For engineers reviewing the UCD90320UZWSR datasheet, UCD90320UZWSR pinout, UCD90320UZWSR application, or UCD90320UZWSR equivalent, key selection considerations include its 24-channel analog monitoring capability, cascading support for up to 128 rails via SYNC_CLK, programmable Boolean logic for GPI/GPO coordination, black-box fault logging at first event, and TI Fusion Digital Power Designer software configurability.
Technical Context
The UCD90320UZWSR implements a deterministic sequencing engine with configurable dependencies, delay timers, and boolean logic for ON/OFF transitions across 32 rails. Its 24 integrated 12-bit ADC channels operate at up to 1 MSPS per channel with ±30 LSB total unadjusted error using internal reference, and support external VREFA± reference inputs for improved accuracy.
It integrates four rail profiles for Adaptive Voltage Identification (AVID), active trim functionality for DC output voltage correction, and nonvolatile flash memory for configuration storage (100k cycles, 20-year retention) plus dedicated EEPROM for fault logging (500k cycles). Cascading uses a single SYNC_CLK signal to synchronize up to four devices, enabling coordinated fault response across 128 rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Rails Supported | 32 voltage rails sequenced and monitored, with 24 analog monitor inputs (AMON) and 8 digital monitor inputs (DMON) |
| ADC Resolution & Rate | 12-bit resolution, 1 MSPS per channel, ±30 LSB total unadjusted error over full range with internal reference |
| Margining Capability | Closed-loop margining on up to 24 rails; supports AVID profiles and active trim for real-time DC voltage correction |
| Nonvolatile Memory | Configuration flash: 100,000 program/erase cycles, 20-year data retention; fault log EEPROM: 500,000 cycles, 20-year retention |
| Package & Thermal | BGA-169 (ZWS), 12.0 mm × 12.0 mm, 0.8-mm pitch; θJA = 41.6°C/W, max operating junction temperature = 93°C |
| PMBus Compliance | Fully compliant with PMBus v1.2; supports clock stretching, alert signaling (PMBALERT#), and all standard power-management commands |
| Reliability Features | Ultra-low-alpha (ULA) mold compound reduces soft errors; SEU detection scans SRAM; black-box fault log captures all rail/I/O states at first fault |
Pinout & Package
UCD90320UZWSR is housed in a 169-pin BGA (ZWS package), 12.0 mm × 12.0 mm body size, 0.8-mm ball pitch. Pin functions are fully defined in TI's SLUSDC1 datasheet, with dedicated analog monitor (AMON), enable (EN), margin (MAR), logic GPO (LGPO), GPIO, DMON, PMBus, JTAG, and power/ground pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AMON1–AMON24 | Analog input monitor | 24 dedicated inputs for voltage, current, or temperature sensing; each routed to 12-bit ADC with programmable gain and filtering |
| EN1–EN32 | Digital rail enable output | 32 configurable outputs (active-high or open-drain) to control DC-DC converters or LDOs; support sequencing dependencies and fault shutdown |
| MAR1–MAR24 | Closed-loop margin PWM output | 24 PWM outputs for precision rail margining; also usable as general-purpose GPIO when not margining |
| LGPO1–LGPO16 | Programmable logic GPO | 16 outputs with per-pin Boolean logic builder accepting GPI, GPO, POWER_GOOD, fault flags, and system events as inputs |
| SYNC_CLK | Cascading synchronization I/O | Single bidirectional clock line enabling synchronized sequencing and coordinated fault response across up to 4 cascaded UCD90320U devices |
Key Features
| Feature | Design Value |
|---|---|
| Black-box fault logging | Captures real-time status of all 32 rails and 84 GPIOs at moment of first fault - enables precise root-cause analysis without external instrumentation |
| Four-corner margining with AVID | Supports adaptive voltage identification for CPU/FPGA rails; performs high-accuracy ±1% closed-loop margining across 24 rails simultaneously |
| Configurable Boolean logic engine | Each of 16 LGPO pins has independent logic builder accepting up to 8 inputs (GPI, GPO, POWER_GOOD, warnings, faults) - eliminates need for external logic ICs |
| ULTRA-LOW-ALPHA (ULA) packaging | Reduces soft-error rate (SER) from alpha particle strikes - critical for telecom infrastructure, industrial control, and aerospace-qualified systems |
| TI Fusion Digital Power Designer GUI | PC-based configuration tool that replaces low-level PMBus command scripting; enables drag-and-drop sequencing setup, real-time telemetry, and one-click firmware update |
Applications
| Server Power Management | Telecom Line Card Sequencing |
|---|---|
Use Scenario: Sequencing and monitoring of 32+ voltage rails powering CPUs, FPGAs, memory, and I/O on dual-socket server motherboards. IC Role / Device Role / Timing Role: Centralized PMBus-addressable sequencer managing power-on/off order, timing delays, inter-rail dependencies, and fault propagation across multiple VRMs. Use Value: Eliminates discrete timing ICs and custom FPGA logic; ensures reliable boot under thermal/voltage stress via black-box logging and SEU-hardened operation. |
Use Scenario: Coordinating startup of DSPs, transceivers, and PHYs on high-density telecom line cards with strict rail sequencing and OV/UV fault response. IC Role / Device Role / Timing Role: System manager enforcing multi-stage power-up (e.g., 12V → 3.3V → 1.8V → 0.8V) with programmable delays and dependency logic between rails. Use Value: Reduces time-to-market by replacing custom CPLD-based sequencers; supports hot-swap control and cascade synchronization across redundant line cards. |
| Industrial PLC Backplane | ATE Power Subsystem |
Use Scenario: Managing isolated power rails for I/O modules, communication interfaces, and safety-critical controllers in programmable logic controllers. IC Role / Device Role / Timing Role: Fault-aware sequencer monitoring rail voltages, temperatures, and digital status signals (e.g., watchdog timeout, emergency stop) with configurable GPI-triggered shutdown. Use Value: Meets IEC 61508 SIL-2 functional safety requirements through deterministic fault logging, nonvolatile event history, and ULA compound reliability. |
Use Scenario: Precision sequencing and margining of DUT supply rails during automated test equipment calibration and burn-in cycles. IC Role / Device Role / Timing Role: Four-corner tester performing simultaneous ±3% margining on 24 rails while logging peak values and fault timestamps in nonvolatile memory. Use Value: Replaces bench-top margining equipment; achieves <±0.5% voltage accuracy via active trim and closed-loop feedback - critical for parametric test repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power sequencing and system management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCD90160RGCT | 16-rail sequencer in 64-pin QFN; no SEU detection; 12-bit ADC with lower channel count (16 AMON); no black-box log | Suitable for cost-sensitive, lower-rail-count designs where cascading and advanced fault logging are unnecessary | Select UCD90160RGCT only if rail count ≤16 and ULA/SEU features are not required for target environment. |
| UCD9090ARGCR | 9-rail sequencer in 40-pin QFN; supports only 8 AMON inputs; no margining; no cascading; no nonvolatile fault log | Targeted at simple point-of-load sequencing in space-constrained embedded systems, not multi-rail servers or telecom gear | Choose UCD9090ARGCR only for basic sequencing of ≤9 rails without monitoring, margining, or fault diagnostics. |
Compared with UCD90160RGCT and UCD9090ARGCR, the UCD90320UZWSR delivers 2× more sequenced rails, integrated SEU/ULA hardening, black-box fault capture, and cascading scalability - making it the sole option for mission-critical, high-density power management where reliability and debuggability are non-negotiable.
Availability
UCD90320UZWSR is available at Aetrix Electronics and suitable for server motherboard design, telecom line card development, industrial PLC backplane integration, and ATE power subsystem validation requiring stable component supply and long-term lifecycle support.
Supply support for UCD90320UZWSR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, communications, and computing markets.
The UCD90320UZWSR belongs to TI's Fusion Digital Power™ sequencer family, designed specifically for high-reliability, multi-rail power system management in servers, networking gear, and industrial automation - emphasizing configurability, fault resilience, and PMBus ecosystem integration.
FAQ
What is the maximum number of voltage rails UCD90320UZWSR can sequence and monitor?
The UCD90320UZWSR supports sequencing and monitoring of up to 32 voltage rails. It provides 24 analog monitor inputs (AMON) for measuring voltage, current, or temperature, and 8 digital monitor inputs (DMON) for tracking rail status or fault signals. All 32 rails can be enabled/disabled via dedicated ENx pins, and sequencing dependencies, delays, and boolean logic are fully programmable in the device's nonvolatile configuration memory.
Does UCD90320UZWSR support closed-loop margining, and how many rails can it margin simultaneously?
Yes, the UCD90320UZWSR supports high-accuracy closed-loop margining on up to 24 voltage rails simultaneously using its MARx pins. Each margin output operates as a PWM-controlled DAC with feedback from the monitored rail, enabling precise ±1% voltage adjustment. The device also supports four AVID profiles and active trim functionality to dynamically correct DC output voltage drift during operation - capabilities confirmed in TI's SLUSDC1 datasheet Section 8.3.7.
How does the black-box fault logging feature work in UCD90320UZWSR?
The UCD90320UZWSR's black-box fault log captures the instantaneous state of all 32 rails and 84 GPIO pins at the exact moment the first fault occurs - including rail voltages, current readings, temperature values, EN/MAR/LGPO pin states, and GPI inputs. This snapshot is stored in dedicated nonvolatile EEPROM and persists across power cycles, enabling rapid failure root-cause analysis without requiring continuous telemetry streaming or external logic analyzers.
Can multiple UCD90320UZWSR devices be synchronized, and what interface is used?
Yes, up to four UCD90320UZWSR devices can be cascaded using the SYNC_CLK pin to achieve synchronized sequencing and coordinated fault response across up to 128 voltage rails. The SYNC_CLK signal coordinates timing across all devices, ensuring deterministic behavior during startup, shutdown, and fault conditions. Cascading requires no additional protocol overhead - it is implemented in hardware and managed entirely by the sequencer's internal state machine.
What software tools are supported for configuring UCD90320UZWSR?
The UCD90320UZWSR is configured exclusively using TI's Fusion Digital Power™ Designer software - a Windows-based GUI that provides drag-and-drop sequencing setup, real-time telemetry visualization, PMBus command scripting, and one-click firmware/configuration download. The tool eliminates manual register programming and supports export/import of configuration files, fault log analysis, and margining calibration - all verified against the official UCD90320U product folder and SLUSDC1 documentation.
UCD90320UZWSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 169-LFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Sequencer
- Number of Voltages Monitored:
- 32
- Voltage - Threshold:
- -
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 250ns Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 169-NFBGA (12x12)
UCD90320UZWSR FAQ
1.How can I place an order for UCD90320UZWSR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCD90320UZWSR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for UCD90320UZWSR reliable?
The price and inventory of UCD90320UZWSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCD90320UZWSR is usually 5 days.
3.What payment methods are accepted for UCD90320UZWSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCD90320UZWSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCD90320UZWSR?
UCD90320UZWSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCD90320UZWSR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for UCD90320UZWSR?
For technical support, including UCD90320UZWSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCD90320UZWSR requirements.
6.How does Aetrix verify that UCD90320UZWSR is sourced from the original manufacturer or authorized distributors?
All UCD90320UZWSR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that UCD90320UZWSR meets industry standards.
7.What is the process for return or replacement of UCD90320UZWSR?
All UCD90320UZWSR units undergo pre-shipment inspection (PSI). If there is an issue with UCD90320UZWSR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The UCD90320UZWSR part is unused and in its original packaging.
Return procedure for UCD90320UZWSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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