Texas Instruments introduces a 12-channel sequencer and system health manager with fan control and multiphase PWM clock generator. The UCD90124 integrates system power management and system thermal management into one device, while providing highly intelligent system health monitoring. The UCD90124 features power supply margining and comprehensive non-volatile error logging, allowing customers to diagnose power supply failures in their systems.
The UCD90124 has a built-in temperature control algorithm that automatically adjusts fan speed based on five configurable temperature zones. Alternatively, designers can use their own temperature control algorithm running on an external host and communicate desired fan speed via I2C commands. The UCD90124 can generate up to eight clocks with configurable frequencies from 15.259 kHz to 125 MHz and phase shift from 0 to 360 degrees, easing synchronization of switch-mode power supplies.
TI’s Fusion Digital Power Designer GUI allows the designer to configure the UCD90124 via a PMBusTM/I2C interface. The free, downloadable tool simplifies the development process allowing the designer to configure all device parameters in minutes.






Wolfgang Patelay, Editor Print & Online 