TPS53640RSBT

The TPS53640RSBT from Texas Instruments is a 3-phase PWM controller with a built-in PMBus interface, compliant with Intel VR12/VR12.5 specifications. This controller is designed to power modern Intel CPUs and DDR memory in server systems, supporting advanced communication for device configurations and system telemetries.

It features the D-CAP+ control architecture with non-linear control schemes (USR and OSR) to handle stringent load transient conditions. The Auto-Phase-Balance feature ensures perfect phase current balance, enabling reduced output capacitance and higher system reliability. The device supports dynamic phase shedding for optimized efficiency across various load conditions and incorporates essential protection features like UVLO, over-current, over-voltage, under-voltage, and over-temperature.

The TPS53640RSBT operates from a 4.5V to 17V input and provides an output voltage range of 0.5V to 2.5V. It supports switching frequencies from 300 kHz to 1 MHz. The controller is housed in a space-saving and thermally enhanced 40-WQFN (5x5) package and operates within an ambient temperature range of -10°C to 105°C. It is suitable for applications requiring precise voltage regulation and high transient response.

This controller utilizes inductor DCR for current sensing and can be used with various power stage options, including TI Smart Power Stage, DrMOS, or discrete MOSFETs. The PMBus interface allows for telemetry of voltage, current, power, and temperature, along with fault condition reporting and programmable configuration.