UCD90160 Datasheet, PDF (1/41 Pages) Texas Instruments – 16-Rail Power Supply Sequencer and Monitor with ACPI Support

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UCD90160
SLVSAC8A – NOVEMBER 2010 – REVISED APRIL 2011
16-Rail Power Supply Sequencer and Monitor with ACPI Support
Check for Samples: UCD90160
FEATURES
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•2 Monitor and Sequence 16 Voltage Rails
– All Rails Sampled Every 400 μs
– 12-bit ADC With 2.5-V, 0.5% Internal V_REF
– 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
DESCRIPTION
The UCD90160 is a 16-rail PMBus/I²C addressable
power-supply sequencer and 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.
12V
12V OUT
3.3V OUT
1.8V OUT
0.8V OUT
3.3V
Supply
VMON
VMON
VMON
VMON
VMON
VMON
VMON
VMON
12V OUT
GPIO
GPIO
GPIO
VIN
VOUT
/EN
DC-DC 1
VFB
3.3V OUT
VIN
/EN VOUT
LDO1
1.8V OUT
WDI from main
processor
WDO
POWER_GOOD
WARN_OV_0.8V_
OR_12V
SYSTEM RESET
OTHER
SEQUENCER DONE
(CASCADE INPUT)
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
UCD90160
I2C/
PMBUS
GPIO
2MHz
PWM
VIN
VOUT
/EN
DC-DC 2
VFB
0.8V OUT
Vmarg
Closed Loop
Margining
JTAG
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PMBus, Fusion Digital Power are trademarks of Texas Instruments.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2011, Texas Instruments Incorporated