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UCD90910 具有集成 10 通道風扇控制器的 10 導軌序列發生器和系統安全管理器

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描述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Monitor and Sequence Ten Voltage RailsAll 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 MonitorFan Control and MonitoringSupports Ten Fans With Five User-Defined Speed-vs-Temperature SetpointsSupports Two-, Three-, and Four-Wire FansNonvolatile 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 GeneratorClock Frequencies From 15.259 kHz to 125?MHzCapability to Configure Independent Clock Outputs for Synchronizing Switch-Mode Power Supplies Internal Temperature SensorJTAG and I2C / SMBus / PMBus InterfacesFullConfiguration Update while in Normal Mode CapabilityAPPLICATIONSIndustrial / ATETelecommunications and Networking EquipmentServers and Storage Systems Any System Requiring Sequencing and Monitoring of Multiple Power Rails

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