UCD9090 Texas instruments

UCD9090

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UCD9090

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Описание

The UCD9090 is a 10-rail PMBus/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 can be used 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 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 provides device configuration. This PC-based user interface (UI) offers an intuitive interface for configuring, storing, and monitoring all system operating parameters.

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
Cascading multiple devices
Multi-phase 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	11
Supply voltage (max) (V)	3.6
Iq (typ) (mA)	50
Number of sequenced outputs	10
Rating	Catalog
Operating temperature range (°C)	-40 to 125