UCD90120数据手册集成电路（IC）的监控器规格书PDF

描述 Description

The UCD90120 Power Supply Sequencer and System Health Monitor monitors and sequences up to 12 independent voltage rails. The device integrates a 12-bit ADC with a 2.5V internal reference for monitoring up to 13 power supply voltage, current, or temperature inputs.
26 GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading multiple UCD90120 devices, or other system functions. 12 of these pins can be used as PWM outputs for power supply margining or general-purpose PWM functions including clock generation for switch-mode power supplies.
The TI Fusion Digital Power Designer 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.
The UCD90120 has an I2C/PMBus/SMBus communication interface for pre-production and in-system configuring and monitoring and a JTAG Port for production programming.

特性 Features

• Monitor and Sequence 12 Voltage Rails
• All Rails Sampled Every 200µs
• 12-bit ADC With 2.5V, 0.5% Internal VREF
• Sequence Based onTime, Rail and Pin Dependencies
• Six Hardware Comparators for Power Supply Fault Response in
• Non-Volatile Error Logging
- Stores Up To 18 Faults
• Log Peak Values For All Monitor Inputs
• Closed Loop Margining for 10 Rails
- Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
• Unused Margin Outputs can be Used as GPIOs or General-Purpose PWM Outputs
• Watchdog Timer and System Reset
• Programmable WDT Reset and Start Times
• Configurable System Reset Pulse Widths
• Flexible Digital I/O Configuration
• Boolean Logic Builder for GPO Config
• GPIOs can be Used as Enables, Resets, Power Good and Other On-Board Functions
• Wide Range Single Supply (3.3V to 12V)
• Internal Temperature Sensor
• 64-Pin QFN Package
• JTAG and I2C/SMBus/PMBus Interfaces
• Fusion Digital Power GUI for Configuring and Monitoring Device Operation
• APPLICATIONS
- Industrial / ATE
• Telecommunications and Networking Equipment
• Servers and Storage Systems
• Any System Requiring Sequencing and Monitoring of Multiple Power Rails