Overview
The UCD9090ARGZR, produced by Texas Instruments, is a 10-Rail Power Supply Sequencer and Monitor designed to provide a flexible and configurable solution for power system sequencing and monitoring. This device integrates a 12-bit ADC for monitoring up to 10 power supply voltage inputs, making it suitable for complex electronic systems that require precise power management.
The UCD9090ARGZR supports both PMBus and I2C/SMBus interfaces, allowing for comprehensive control and monitoring of power rails. It is particularly useful in systems that include multiple voltage rails, such as those found in CPUs, DSPs, microcontrollers, FPGAs, and ASICs, ensuring correct power on/off sequences and continuous monitoring of rail voltages, currents, and temperatures.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Monitored Rails | 10 | - |
| ADC Resolution | 12-bit | - |
| Internal VREF | 2.5 V, 0.5% | - |
| Sampling Rate | Every 400 μs | - |
| Undervoltage and Overvoltage Thresholds | Four programmable per monitor | - |
| Nonvolatile Error and Peak-Value Logging | Up to 26 fault detail entries | - |
| Closed-Loop Margining | For 10 rails | - |
| Watchdog Timer and System Reset | Programmable | - |
| Digital I/O Configuration | Flexible | - |
| PWM Clock Generator | 15.259 kHz to 125 MHz | - |
| Operating Temperature | -40°C to 110°C | °C |
| Junction Temperature | 125°C | °C |
| Package Type | VQFN (48 pins) | - |
| Package Size | 7.00 mm × 7.00 mm | mm |
Key Features
- Sequencing and Monitoring: Monitors and sequences 10 voltage rails based on time, rail, and pin dependencies.
- ADC and Sampling: 12-bit ADC with a 2.5-V, 0.5% internal VREF, sampling all rails every 400 μs.
- Thresholds and Logging: Four programmable undervoltage and overvoltage thresholds per monitor, with nonvolatile error and peak-value logging (up to 26 fault detail entries).
- Closed-Loop Margining: Margin output adjusts rail voltage to match user-defined margin thresholds for up to 10 rails.
- Watchdog and Reset: Programmable watchdog timer and system reset.
- Digital I/O Configuration: Flexible digital I/O configuration with 23 GPIO pins.
- Fault Response and Cascading: Response and monitoring to GPI-triggered faults, with the ability to cascade multiple power sequencers for coordinated fault responses.
- PWM Clock Generator: Multiphase PWM clock generator with frequencies from 15.259 kHz to 125 MHz.
- Interfaces: JTAG and I2C/SMBus/PMBus interfaces for communication.
- TI Fusion GUI: Configuration and monitoring via the Texas Instruments Fusion Digital Power Designer software.
Applications
- Industrial and ATE: Suitable for industrial automation and automated test equipment (ATE) due to its robust sequencing and monitoring capabilities.
- Telecommunications and Networking Equipment: Used in telecommunications and networking equipment to manage multiple power rails efficiently.
- Servers and Storage Systems: Ideal for servers and storage systems that require precise power management and sequencing.
- Any System Requiring Sequencing and Monitoring of Multiple Power Rails: Applicable to any system that needs to sequence and monitor multiple power rails, ensuring reliable operation and fault detection.
Q & A
- What is the primary function of the UCD9090ARGZR?
The primary function of the UCD9090ARGZR is to monitor and sequence up to 10 voltage rails in electronic systems, ensuring correct power on/off sequences and continuous monitoring of rail voltages, currents, and temperatures.
- What type of ADC does the UCD9090ARGZR use?
The UCD9090ARGZR uses a 12-bit ADC with a 2.5-V, 0.5% internal VREF.
- How often are the voltage rails sampled?
The voltage rails are sampled every 400 μs.
- What are the programmable thresholds for undervoltage and overvoltage?
There are four programmable undervoltage and overvoltage thresholds per monitor.
- What is the purpose of the closed-loop margining feature?
The closed-loop margining feature adjusts the rail voltage to match user-defined margin thresholds for up to 10 rails.
- Can the UCD9090ARGZR be cascaded with other devices?
- What interfaces does the UCD9090ARGZR support?
The UCD9090ARGZR supports JTAG and I2C/SMBus/PMBus interfaces.
- What software is used for configuring the UCD9090ARGZR?
The Texas Instruments Fusion Digital Power Designer software is used for configuring and monitoring the UCD9090ARGZR.
- What is the operating temperature range of the UCD9090ARGZR?
The operating temperature range is from -40°C to 110°C.
- What is the package type and size of the UCD9090ARGZR?
The package type is VQFN (48 pins) with a size of 7.00 mm × 7.00 mm.
