UCD90120系列介绍资料

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UCD90120

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12 通道序列发生器和系统安全监视器

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The UCD90120 Power Supply Sequencer and System Health Monitor monitors and sequences up to 12 independent voltage rails. The device integrates a 12-bit ADC with a 2.5V internal reference for monitoring up to 13 power supply voltage, current, or temperature inputs.

26 GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading multiple UCD90120 devices, or other system functions. 12 of these pins can be used as PWM outputs for power supply margining or general-purpose PWM functions including clock generation for switch-mode power supplies.

The TI Fusion Digital Power Designer 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.

The UCD90120 has an I²C/PMBus/SMBus communication interface for pre-production and in-system configuring and monitoring and a JTAG Port for production programming.

Monitor and Sequence 12 Voltage Rails
- All Rails Sampled Every 200µs
- 12-bit ADC With 2.5V, 0.5% Internal V_REF
- Sequence Based on Time, Rail and Pin Dependencies
- Six Hardware Comparators for Power Supply Fault Response in < 80µs
- Four Programmable Under-Voltage and Over-Voltage Thresholds per Monitor
- Programmable Fault Response Including Retries, Shutdown Slaves and Resequence
Non-Volatile Error Logging
- Stores Up To 18 Faults
- Log Peak Values For All Monitor Inputs
Closed Loop Margining for 10 Rails
- Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
- Unused Margin Outputs can be Used as GPIOs or General-Purpose PWM Outputs
Watchdog Timer and System Reset
- Programmable WDT Reset and Start Times
- Configurable System Reset Pulse Widths
Flexible Digital I/O Configuration
- Boolean Logic Builder for GPO Config
- GPIOs can be Used as Enables, Resets, Power Good and Other On-Board Functions
Wide Range Single Supply (3.3V to 12V)
- Internal Temperature Sensor
- 64-Pin QFN Package
JTAG and I²C/SMBus/PMBus Interfaces
Fusion Digital Power GUI for Configuring and Monitoring Device Operation
APPLICATIONS
- Industrial / ATE
- Telecommunications and Networking Equipment
- Servers and Storage Systems
- Any System Requiring Sequencing and Monitoring of Multiple Power Rails

Supply voltage (min) (V)	3
Number of supplies monitored	13
Supply voltage (max) (V)	3.6
Iq (typ) (mA)	50
Number of sequenced outputs	12
Rating	Catalog
Operating temperature range (°C)	-40 to 125

VQFN (RGC)

81 mm² 9 x 9

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UCD90120

12 通道序列发生器和系统安全监视器

4000-306-326