UCD90120A Texas instruments

UCD90120A

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UCD90120A

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Описание

The UCD90120A is a 12-rail PMBus/I2C addressable power-supply sequencer and monitor. The device integrates a 12-bit ADC for monitoring up to 12 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 UCD90120A 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.

Monitor and Sequence 12 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
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 and I²C/SMBus/PMBus™ Interfaces

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