UCD90910数据手册集成电路（IC）的监控器规格书PDF

描述 Description

The UCD90910 is a ten-rail I2C / PMBus addressable power-supply sequencer and system-health monitor. The device integrates a 12-bit ADC for monitoring up to 13 power-supply voltage, current, or temperature inputs.Twenty-six GPIO pins can be used for power-supply enables, power-on-reset signals, external interrupts, cascading, or other system functions. Twelve of these pins offer PWM functionality. Using these pins, the UCD90910 offers support for fan control, margining, and general-purpose PWM functions.Fan-control signals can be sent using PMBus commands or generated from one of two built-in fan-control algorithms. PWM outputs combined with temperature and fan-speed measurements provide a complete fan-control solution for up to ten independent fans. The TI Fusion Digital Power designer software is provided for device configuration. This PC-based graphical user interface (GUI) offers an intuitive interface for configuring, storing, and monitoring all system operating parameters.

特性 Features

• Monitor and Sequence Ten Voltage Rails
• All Rails Sampled Every 400 µs
• 12-Bit ADC With 2.5-V, 0.5% Internal VREF
• Sequence Based on Time, Rail and Pin Dependencies
• Four Programmable Undervoltage and Overvoltage Thresholds per Monitor

• Fan Control and Monitoring
• Supports Ten Fans With Five User-Defined Speed-vs-Temperature Setpoints
• Supports Two-, Three-, and Four-Wire Fans

• Nonvolatile Error and Peak-Value Logging per Monitor (up to 12 Faults)
• Closed-Loop Margining for Ten Rails
• Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds

• Programmable Watchdog Timer and System Reset
• Flexible Digital I/O Configuration
• Multiphase PWM Clock Generator
• Clock Frequencies From 15.259 kHz to 125 MHz
• Capability to Configure Independent Clock Outputs for Synchronizing Switch-Mode Power Supplies

• Internal Temperature Sensor
• JTAG and I2C / SMBus / PMBus Interfaces
• Full Configuration Update while in Normal Mode Capability
• APPLICATIONS
• Industrial / ATE
• Telecommunications and Networking Equipment
• Servers and Storage Systems
• Any System Requiring Sequencing and Monitoring of Multiple Power Rails