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UCD90120ARGCR
12-Rail Power Supply Sequencer and Monitor with ACPI Support 64-VQFN -40 to 125
Vmarg
ClosedLoop
Margining
UCD90120A
VMON
GPIO
12V
33D
GPIO
3.3VOUT VMON
1.8VOUT
0.8VOUT
I0.8V
TEMP0.8V
VMON
VMON
VMON
VMON
I12V
TEMP12V VMON
VMON
INA196
I12V
12VOUT
3.3VOUT
12VOUT
1.8VOUT
GPIO
GPIO
0.8VOUT
PWM
2MHz
INA196 I0.8V
WDIfrommain
processor GPIO
WDO GPIO
TEMPIC TEMP0.8V
TEMPIC TEMP12V
POWER_GOOD GPIO
WARN_OC_0.8V_
OR_12V GPIO
SYSTEMRESET GPIO
OTHER
SEQUENCERDONE
(CASCADEINPUT) GPIO
I2C/
PMBUS
JTAG
/EN
DC-DC1
VOUT
VFB
VIN
/EN
LDO1
VOUT
VIN
/EN
DC-DC2
VOUT
VFB
VIN
3.3V
Supply
Product
Folder
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Reference
Design
UCD90120ASLVSAN9B –APRIL 2011–REVISED DECEMBER 2015
UCD90120A 12-Rail Power Supply Sequencer and Monitor With ACPI SupportSpecific power states can be achieved using the Pin-
1 FeaturesSelected Rail States feature. This feature allows with Monitor and Sequence 12 Voltage Rails the useof upto3 GPIsto enable and disable any– All Rails Sampled Every 400μs rail. Thisis useful for implementing system low-power
modes and the Advanced Configuration and Power– 12-bit ADC With 2.5-V, 0.5% Internal VREF Interface (ACPI) specification that is used for– Sequence Basedon Time, Rail and Pin hardware devices.Dependencies
TheTI Fusion Digital Power™ designer softwareis– Four Programmable Undervoltage and provided for device configuration. This PC-basedOvervoltage Thresholds per Monitor graphical user interface (GUI) offers an intuitive• Nonvolatile Error and Peak-Value Logging per interface for configuring, storing, and monitoring allMonitor (upto12 Fault Detail Entries) system operating parameters. Closed-Loop Margining for10 Rails
Device Information(1)– Margin Output Adjusts Rail Voltageto MatchUser-Defined Margin Thresholds• Programmable Watchdog Timer and System
(1) Forall available packages, see the orderable addendumatReset
the endofthe data sheet.• Flexible Digital I/O Configuration Pin-Selected Rail States
Simplified Schematic Multiphase PWM Clock Generator Clock Frequencies From 15.259 kHzto
125 MHz Capabilityto Configure Independent Clock
Outputs for Synchronizing Switch-Mode Power
Supplies JTAG andI2 C/SMBus/PMBus™ Interfaces
Applications Industrial/ ATE Telecommunications and Networking Equipment Servers and Storage Systems Any System Requiring Sequencing and Monitoring Multiple Power Rails
DescriptionThe UCD90120Aisa 12-rail PMBus/I2C addressable and monitor. The device for monitoring up to 12 inputs. Twenty-six GPIO pins power supply enables, power-on pins offer PWM offers PWM
