UCD90124A
- Monitor and sequence 12 voltage rails
- All rails sampled every 400 µs
- 12-bit ADC with 2.5-V, 0.5% internal VREF
- 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
- Clock frequencies
from 15.259 kHz to
- JTAG and I2C/SMBus/PMBus™ interfaces
- Fan control and monitoring system functions.
- Supports four fans with five user-defined speed-vs-temperature setpoints
- Supports two-, three-, and four-wire fans
The UCD90124A 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 UCD90124A offers support for fan control, 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.
最新の UCD90xxx PMBus™ コマンド リファレンスは、https://www.ti.com/fusiondocsで入手可能
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| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| VQFN (RGC) | 64 | Ultra Librarian |