Overview
The UCD90320UZWST, produced by Texas Instruments, is a 32-rail PMBus™ addressable power sequencer and system manager. This device is designed to sequence, monitor, and margin 24 voltage rails and 8 digital rails, making it highly versatile for complex power management applications. It is packaged in a compact 0.8-mm pitch BGA package, enhancing its suitability for space-constrained systems. The UCD90320UZWST features advanced fault monitoring and response capabilities, including overvoltage (OV), undervoltage (UV), overcurrent (OC), undervoltage (UC), temperature, time-out, and GPI-triggered faults. The device also supports flexible sequencing dependencies, delay times, Boolean logic, and GPIO configurations, making it ideal for a wide range of power sequencing needs.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of Voltage Rails | 24 voltage rails + 8 digital rails | 32 |
| Package Type | 169-Pin BGA | 12.0 mm × 12.0 mm |
| Supply Voltage | V33D to DVSS, V33A to AVSS | 0 to 4 V |
| ADC Channels | 24 integrated ADC channels (AMONx) | Monitor power supply voltage, current, and temperature |
| GPIO Pins | 84 GPIO pins | 8 digital monitors, 32 enable pins, 24 margining pins, 16 logical GPO, 32 GPIs |
| Thermal Resistance | Junction-to-ambient thermal resistance (RθJA) | 41.6 °C/W |
| PMBus Compliance | PMBus 1.2 compliant | - |
Key Features
- Advanced Fault Monitoring and Response: Monitors and responds to OV, UV, OC, UC, temperature, time-out, and GPI-triggered faults.
- Flexible Sequencing: Supports complex sequencing applications with flexible sequence-on and off dependencies, delay times, Boolean logic, and GPIO configurations.
- High-Accuracy Margining: Features high-accuracy closed-loop margining and an active trim function to improve rail output voltage accuracy.
- Nonvolatile Event Logging: Includes single-event fault log (100 entries), peak value log, and black box fault log to save the status of all rails and I/O pins at the first fault.
- Cascading Capability: Easily cascade up to 4 power sequencers and take coordinated fault responses.
- Programmable Watchdog Timer and System Reset: Allows for programmable watchdog timer and system reset.
- Pin-Selected Rail States: Uses up to 3 GPIs to control up to eight user-defined power states, supporting system low-power modes as outlined in the ACPI specification.
- Texas Instruments Fusion Digital Power™ Designer Software: An intuitive PC-based GUI for configuring, storing, and monitoring all system operating parameters.
Applications
- Industrial and ATE: Suitable for industrial automation and automated test equipment.
- Telecom and Networking Equipment: Used in telecommunications and networking devices that require complex power sequencing.
- Servers and Storage Systems: Ideal for server and storage systems that need robust power management.
- Systems Requiring Multiple Power Rails: Any system that requires sequencing and monitoring of multiple power rails.
Q & A
- What is the primary function of the UCD90320UZWST?
The primary function of the UCD90320UZWST is to sequence, monitor, and margin 24 voltage rails and 8 digital rails, providing comprehensive power management and fault detection capabilities.
- What type of package does the UCD90320UZWST come in?
The UCD90320UZWST is packaged in a 169-Pin BGA package with a 0.8-mm pitch.
- How many ADC channels does the UCD90320UZWST have?
The device has 24 integrated ADC channels (AMONx) to monitor power supply voltage, current, and temperature.
- What is the purpose of the GPIO pins on the UCD90320UZWST?
The 84 GPIO pins are used for various functions including digital monitoring, enabling power supplies, margining, logical GPO, and cascading/system functions.
- Is the UCD90320UZWST PMBus compliant?
Yes, the UCD90320UZWST is PMBus 1.2 compliant.
- How does the UCD90320UZWST handle fault logging?
The device features nonvolatile event logging, including a single-event fault log (100 entries), peak value log, and black box fault log to save the status of all rails and I/O pins at the first fault.
- Can the UCD90320UZWST be cascaded with other devices?
Yes, the UCD90320UZWST can be cascaded with up to 4 power sequencers to take coordinated fault responses.
- What software is used to configure and monitor the UCD90320UZWST?
The Texas Instruments Fusion Digital Power™ Designer software is used to configure, store, and monitor all system operating parameters.
- What are some common applications for the UCD90320UZWST?
The UCD90320UZWST is commonly used in industrial and ATE, telecom and networking equipment, servers, and storage systems, as well as any system requiring sequencing and monitoring of multiple power rails.
- How does the UCD90320UZWST support low-power modes?
The device uses up to 3 GPIs to control up to eight user-defined power states, supporting system low-power modes as outlined in the ACPI specification.
