UCD90120ARGCR

The UCD90120ARGCR from Texas Instruments is a versatile 12-rail power supply sequencer and monitor designed for complex power management applications. This device integrates a 12-bit Analog-to-Digital Converter (ADC) capable of monitoring up to 12 distinct power-supply voltage inputs, ensuring precise oversight of system power rails.

Key electrical features include the ability to sequence based on time, rail, or pin dependencies, with four programmable undervoltage and overvoltage thresholds per monitor. It also offers non-volatile error and peak-value logging for up to 12 fault detail entries. The UCD90120ARGCR supports closed-loop margining for 10 rails, allowing the margin output to adjust rail voltage to meet user-defined thresholds. A programmable watchdog timer and system reset functionality are included for enhanced system reliability.

This sequencer operates within a temperature range of -40°C to 125°C and is housed in a 64-VQFN (9x9 mm) package. It supports flexible digital I/O configuration and pin-selected rail states. The device also features a multiphase PWM clock generator with configurable independent clock outputs for synchronizing switch-mode power supplies, with clock frequencies ranging from 15.259 kHz to 125 MHz. Communication interfaces include JTAG and I2C/SMBus/PMBus.

The UCD90120ARGCR is suitable for applications requiring sophisticated power sequencing and monitoring, such as complex computing systems, servers, and advanced power architectures where precise control and fault detection are critical.