UCD9090ARGZT  Description

The UCD9090A is a 10-track PMBus/I2C addressable power sequencer and monitor. The device integrates a 12-bit ADC to monitor up to 10 power supply voltage inputs. 23 GPIO pins can be used for power-on, power-on reset signals, external interrupts, cascading or other system functions. Ten of the pins provide pulse width modulation. With these pins, UCD9090A supports margin adjustment and regular PWM functions. By using the track state function selected by the pin, a specific power state can be achieved. This feature allows you to enable and disable any track using up to 3 GPI. This is very useful for implementing the low power mode of the system and the advanced configuration and power interface (ACPI) specification of hardware devices. 0ATTI Fusion digital power designer software is used for device configuration. This PC-based graphical user interface (GUI) provides an intuitive interface for configuring, storing and monitoring all system operating parameters

UCD9090ARGZT  Features

?Easily cascade multiple power sequencers and take coordinated fault responses

?Pin-selected rail states
?Cascading multiple devices
?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

?Monitor and sequence 10 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 26 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
?Flexible digital I/O configuration
?Response and monitor to GPI-triggered fault

UCD9090ARGZT  Applications

? Industrial and ATE, Telecommunications 

? networking equipment

? Servers 

? storage systems

? any system requiring sequencing 

? monitoring of multiple power rails