The UCD90160 is a 16-rail PMBus/I2C addressable power-supply sequencerand monitor.The device integrates a 12-bit ADC for monitoring up to 16 power-supply voltage 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 UCD90160 offers support for margining, and general-purpose PWM functions.

Specific power states can be achieved using the Pin-Selected Rail States feature. This feature allows with the use of up to 3 GPIs to enable and disable any rail. This is useful for implementing system low-power modes and the Advanced Configuration and Power Interface (ACPI) specification that is used for hardware devices.

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.

• Monitor and Sequence 16 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
• Nonvolatile Error and Peak-Value Logging per Monitor (up to 12 Fault Detail Entries)
• Closed-Loop Margining for 10 Rails
  • Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
• Programmable Watchdog Timer and System Reset
• Pin Selected Rail States for ACPI Support
• 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
• JTAG and I2C/SMBus/PMBus Interfaces
• APPLICATIONS
  • Industrial / ATE
  • Telecommunications and Networking Equipment
  • Servers and Storage Systems
  • Any System Requiring Sequencing and Monitoring of Multiple Power Rails