UCD9090-Q1 Datasheet, PDF (1/48 Pages) Texas Instruments – 10-Rail Power-Supply Sequencer and Monitor With ACPI Support

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UCD9090-Q1
SLVSBH9A – JANUARY 2013 – REVISED FEBRUARY 2013
10-Rail Power-Supply Sequencer and Monitor With ACPI Support
Check for Samples: UCD9090-Q1
FEATURES
1
•2 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following
Results:
– Device Temperature Grade 1: –40°C to
125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C4B
• Monitor and Sequence 10 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 30 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
• Pin-Selected Rail States
• 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, I²C, SMBus, and PMBus™ Interfaces
APPLICATIONS
Any System Requiring Sequencing and
Monitoring of Multiple Power Rails
DESCRIPTION
The UCD9090-Q1 is a 10-rail PMBus- and I²C-
addressable power-supply sequencer and
monitor. The device integrates a 12-bit ADC for
monitoring up to 10 power-supply voltage
inputs. Twenty-three GPIO pins are usable for power-
supply enables, power-on reset signals, external
interrupts, cascading, or other system functions. Ten
of these pins offer PWM functionality. Using these
pins, the UCD9090-Q1 offers support for margining
and for general-purpose PWM functions.
One can achieve specific power states using the pin-
selected rail-states feature. This feature allows
enabling or disabling any rail by the use of up to three
GPIs. This feature is useful for implementing system
low-power modes and the Advanced Configuration
and Power Interface (ACPI) specification that is used
for hardware devices.
Use of the TI Fusion Digital Power™ designer
software assists in device configuration. This PC-
based graphical user interface (GUI) offers an
intuitive interface for configuring, storing, and
monitoring all system operating parameters.
12V
I12V _INA196
3.3V
Supply
12V OUT
TEMP12V
TEMP IC
12V OUT
3.3V OUT
1.8V OUT
0.8V OUT
I0.8V
TEMP0.8V
I12V
TEMP12V
VMON
VMON
VMON
VMON
VMON
VMON
VMON
VMON
WDI from main
processor
WDO
POWER_GOOD
WARN_OC_0.8V_
OR_12V
SYSTEM RESET
OTHER
SEQUENCER DONE
(CASCADE INPUT)
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
UCD9090
I2C/
PMBUS
GPIO
GPIO
VIN
VOUT
/EN
DC-DC 1
VFB
3.3V OUT
GPIO
GPIO
PWM ^2MHz
VIN
/EN VOUT
LDO1
1.8V OUT
TEMP0.8V
TEMP IC
VIN
VOUT
/EN
DC-DC 2
VFB
0.8V OUT
Vmarg
Closed Loop
Margining
I0.8V
INA196
JTAG
1
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.
2
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 © 2013, Texas Instruments Incorporated