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Texas Instruments UCD9090ARGZT
- Part No.:
- UCD9090ARGZT
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
UCD9090ARGZT.pdf
- Description:
- IC SUPERVISOR 10 CHANNEL 48VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
UCD9090ARGZT from Texas Instruments is a 10-rail PMBus/I²C-addressable power supply sequencer and monitor with ACPI support, integrating a 12-bit ADC (2.5 V ±0.5% internal reference), 400 μs per-rail sampling, four programmable UV/OV thresholds per rail, nonvolatile fault logging (26 entries), and closed-loop margining for all 10 rails. It serves as the central system health controller in multi-rail server and telecom power architectures.
For engineers reviewing the UCD9090ARGZT datasheet, UCD9090ARGZT pinout, UCD9090ARGZT application, or UCD9090ARGZT equivalent, key selection considerations include rail sequencing dependency logic, GPI-triggered fault response coordination, PWM clock synchronization capability (15.26 kHz–125 MHz), and pin-selected low-power state implementation per ACPI specification.
Technical Context
The UCD9090ARGZT implements a deterministic sequencing engine that evaluates time-based, rail-state, and GPIO-driven dependencies to assert or deassert up to 10 rail enable signals. Its 12-bit ADC samples 11 analog monitor inputs (MON1–MON11) every 400 μs with ±4 LSB INL and ±2 LSB DNL, supporting precise voltage monitoring across 0–2.5 V (MON1–MON10) and 0.2–2.5 V (MON11) ranges.
It features dual PWM subsystems: eight FPWM outputs (15.26 kHz–125 MHz) for synchronizing external DC/DC controllers, and two lower-frequency PWM/GPI pins (0.93 Hz–7.81 MHz) usable for margining or general-purpose timing. Fault handling is coordinated via dedicated PMBus_ALERT, GPI-triggered shutdown, and cascaded fault propagation using TRST and WDO/WDI signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Rails | 10 voltage rails + 1 auxiliary (MON11), enabling comprehensive multi-supply health tracking |
| ADC Resolution & Ref | 12-bit with 2.5 V ±0.5% internal reference - ensures <±12.5 mV absolute accuracy at 25°C for rail validation |
| Sampling Interval | 400 μs per full 11-input scan - supports real-time detection of fast transients and brownouts |
| PWM Clock Range | FPWM outputs: 15.26 kHz–125 MHz - allows synchronous switching of modern multiphase VRMs and POL converters |
| Fault Logging | 26 nonvolatile fault detail entries with timestamps - enables post-failure root-cause analysis without host intervention |
| Interface Support | PMBus v1.1, I²C, SMBus, JTAG - provides both standardized command access and boundary-scan debug capability |
| Operating Temp | –40°C to +110°C ambient - qualified for industrial and telecom base station environments |
Pinout & Package
UCD9090ARGZT is housed in a 48-pin VQFN package (7.0 mm × 7.0 mm) with exposed thermal pad, optimized for high-density power management subsystems requiring low thermal resistance (RθJA = 25°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MON1–MON10 | Analog voltage monitor input | 0–2.5 V range, 8 MΩ input impedance - directly interfaces with resistor-divided rail outputs without signal conditioning |
| MON11 | Auxiliary analog monitor input | 0.2–2.5 V range, 0.5–1.5 MΩ impedance - supports low-voltage bias or temperature sensor feedback |
| FPWM1–FPWM8 | High-frequency PWM output / GPIO | Configurable 15.26 kHz–125 MHz clock source - synchronizes multiple DC/DC phases to reduce EMI and improve transient response |
| PWM1/GPI1, PWM2/GPI2 | Margining PWM / fault-triggered input | 0.93 Hz–7.81 MHz closed-loop margining or GPI-initiated shutdown - enables precision voltage trimming and fail-safe rail disable |
| PMBus_CLK / DATA / ALERT | PMBus interface signals | 400 kHz max operation, open-drain ALERT with pullup - delivers standardized power telemetry and alert-on-fault signaling to host controller |
| V33A / V33D / DVSS / AVSS1 / AVSS2 | Power and ground domains | Separate analog/digital 3.3 V supplies and dedicated ground planes - minimize noise coupling into sensitive ADC and sequencing logic |
Key Features
| Feature | Design Value |
|---|---|
| Pin-selected rail states | Up to 3 GPIs define 8 discrete power states - implements ACPI S0–S5 modes without host firmware involvement |
| Cascadable fault coordination | Dedicated TRST, WDO, and GPI fault chaining - enables synchronized shutdown across multiple UCD9090ARGZT devices in large systems |
| Closed-loop margining | Real-time adjustment of 10 rail voltages to user-defined high/low limits - supports production four-corner testing and in-field calibration |
| Nonvolatile configuration storage | On-chip flash retains settings for >100 years and supports ≥20,000 write cycles - eliminates boot-time reconfiguration overhead |
| Boolean logic GPOs | 10 programmable digital outputs with configurable GPI/GPO/flag inputs - replaces discrete logic for power-good arbitration and interlock generation |
Applications
| Server Power Sequencing | Telecom Line Card Monitoring |
|---|---|
|
Use Scenario: Sequencing 10+ rails (CPU core, memory, I/O, PHY) in x86 or ARM-based servers with strict timing and dependency requirements. IC Role / Device Role / Timing Role: Central sequencer enforcing turn-on/off order, POWER_GOOD handshaking, and fault-triggered graceful shutdown per ACPI spec. Use Value: Prevents latch-up and damage during cold start/warm reset by ensuring VCCIO powers before VDDQ and VDD before VDDA. |
Use Scenario: Real-time monitoring of 12 V, 3.3 V, 1.8 V, and 0.8 V rails on 5G baseband line cards with thermal derating and load-step response validation. IC Role / Device Role / Timing Role: System health controller capturing voltage excursions, logging peak values, and triggering WARN_OV alerts before hard faults occur. Use Value: Enables predictive maintenance by correlating rail instability with temperature rise (via MON11 + external temp sensor). |
| Industrial PLC Power Management | ATE Power Supply Control |
|
Use Scenario: Managing isolated DC/DC outputs in programmable logic controllers where rail sequencing must survive ESD events and wide ambient swings. IC Role / Device Role / Timing Role: Robust sequencer with ±2500 V HBM ESD rating, operating from –40°C to +110°C, coordinating enable signals across galvanically isolated domains. Use Value: Eliminates need for external watchdog timers and discrete voltage supervisors, reducing BOM count and board area. |
Use Scenario: Precision margining of test instrument power rails during production calibration to verify tolerance compliance at min/max corners. IC Role / Device Role / Timing Role: Closed-loop margining engine adjusting each rail to ±0.5% of nominal using FPWM outputs and feedback loops. Use Value: Achieves <±1.25 mV absolute voltage accuracy at 2.5 V reference, meeting Class I ATE calibration standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power supply sequencing and monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCD90120ARGCR | 12-rail capacity, higher pin count (64-pin VQFN), adds current sensing via integrated sense amplifiers | Better suited for systems requiring rail current telemetry alongside voltage sequencing | Select when monitoring rail current (not just voltage) is required; not drop-in due to different pinout and footprint |
| LM9926PWR | 6-rail sequencer, no PMBus, SPI-only interface, no margining or FPWM outputs | Targeted at cost-sensitive, lower-complexity embedded systems without advanced telemetry needs | Choose for simpler designs where only basic sequencing and UV/OV fault response are needed |
Compared with UCD9090ARGZT, UCD90120ARGCR extends rail count and adds current sensing but requires PCB redesign, while LM9926PWR reduces functionality and interface flexibility to meet budget constraints - neither offers pin compatibility or identical feature parity.
Availability
UCD9090ARGZT is available at Aetrix Electronics and suitable for servers and storage systems, telecommunications infrastructure, and industrial PLCs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for UCD9090ARGZT 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 power management ICs for enterprise and industrial markets.
The UCD9090ARGZT belongs to TI's Fusion Digital Power™ sequencer family, designed specifically for high-reliability, multi-rail power architecture control in datacenter, telecom, and automated test equipment applications.
FAQ
What is the primary function of the UCD9090ARGZT in a power system?
The UCD9090ARGZT functions as a centralized power supply sequencer and monitor, managing the turn-on/off order of up to 10 voltage rails while continuously sampling rail voltages via its 12-bit ADC. It enforces dependencies between rails, logs faults nonvolatily, and supports closed-loop margining - making it essential for reliable startup, fault containment, and system health visibility in complex electronics like servers and telecom gear. The UCD9090ARGZT integrates these capabilities in a single 48-pin VQFN package with PMBus and JTAG interfaces.
Does the UCD9090ARGZT support ACPI-compliant power states?
Yes, the UCD9090ARGZT implements Pin-Selected Rail States using up to three GPI inputs to define eight discrete power configurations - directly supporting ACPI S0 (working) through S5 (mechanical off) states. This enables hardware-level low-power mode transitions without host CPU intervention, critical for energy-efficient servers and embedded systems. The UCD9090ARGZT uses these GPIs to enable/disable specific rails in predefined combinations, satisfying ACPI specification requirements for state-dependent power delivery.
How does the UCD9090ARGZT handle fault conditions across multiple devices?
The UCD9090ARGZT supports coordinated fault response through dedicated signals including TRST, WDO (watchdog output), and GPI-triggered shutdown. When cascaded, one UCD9090ARGZT can assert WDO to trigger reset on another device, while GPI inputs accept external fault signals to initiate immediate rail disable or sequence-off actions. Fault details - including timestamp, rail ID, and threshold violation - are stored in on-chip nonvolatile flash (26 entries), enabling cross-device failure correlation. This behavior is fully configurable via TI's Fusion GUI software.
What PWM frequencies does the UCD9090ARGZT support for margining and synchronization?
The UCD9090ARGZT provides two PWM subsystems: eight FPWM outputs configurable from 15.26 kHz to 125 MHz for synchronizing external DC/DC controllers, and two PWM/GPI pins (PWM1/GPI1 and PWM2/GPI2) operating from 0.93 Hz to 7.81 MHz for closed-loop voltage margining. The FPWM range covers standard switch-mode frequencies used in VRMs and POL converters, while the lower-frequency PWMs deliver precise analog-like trimming resolution. All PWM outputs are digitally programmable and retain settings in nonvolatile memory after power cycle - a key capability of the UCD9090ARGZT.
Can the UCD9090ARGZT monitor more than 10 voltage rails?
The UCD9090ARGZT monitors up to 10 primary voltage rails (MON1–MON10) plus one auxiliary input (MON11) with a reduced 0.2–2.5 V range, allowing use with temperature sensors or low-voltage references. While MON11 is not counted among the 10 sequenced rails, it provides additional telemetry capability - for example, monitoring a remote temperature IC's output or a bias voltage. The UCD9090ARGZT's sequencing engine controls exactly 10 rails, but its 11-monitor-input architecture enables richer system health visibility beyond the core sequenced supplies.
UCD9090ARGZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Sequencer
- Number of Voltages Monitored:
- 10
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- -
- Reset:
- Active Low
- Reset Timeout:
- 2µs Minimum
- Operating Temperature:
- -40°C ~ 110°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (7x7)
UCD9090ARGZT FAQ
1.How can I place an order for UCD9090ARGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCD9090ARGZT 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 UCD9090ARGZT reliable?
The price and inventory of UCD9090ARGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCD9090ARGZT is usually 5 days.
3.What payment methods are accepted for UCD9090ARGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCD9090ARGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCD9090ARGZT?
UCD9090ARGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCD9090ARGZT 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 UCD9090ARGZT?
For technical support, including UCD9090ARGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCD9090ARGZT requirements.
6.How does Aetrix verify that UCD9090ARGZT is sourced from the original manufacturer or authorized distributors?
All UCD9090ARGZT 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 UCD9090ARGZT meets industry standards.
7.What is the process for return or replacement of UCD9090ARGZT?
All UCD9090ARGZT units undergo pre-shipment inspection (PSI). If there is an issue with UCD9090ARGZT, 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 UCD9090ARGZT part is unused and in its original packaging.
Return procedure for UCD9090ARGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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