High-current, 30-A, PMBus converters have integrated MOSFETs

June 24, 2014 // By Graham Prophet
20-A and 30-A SWIFT DC/DC buck converters from Texas Instruments feature voltage, current and temperature monitoring; TI says they are the first 18-V, 20-A and 30-A synchronous DC/DC buck converters with PMBus interface.

The SWIFT TPS544B20 and TPS544C20 converters feature small QFN packages and integrated MOSFETs to drive ASICs in space-constrained and power-dense applications. Used in conjunction with TI's WEBENCH online design tools, the converters simplify power conversion and speed the power supply design process.

The highly integrated converters feature 0.5% reference voltage accuracy and fully differential remote voltage sensing to meet voltage requirements of today's processors. Selectable D-CAP or D-CAP2 adaptive on-time control mode is easy to use, provides very fast load transient response and reduces external component count. Programmability, real-time monitoring of the output voltage, current and external temperature, and fault reporting via PMBus simplifies power supply design, increases reliability and reduces component count and system cost.

In a 40-pin, 5 x 7 x 1 mm QFN package, the 20-A TPS544B20 is priced at $3.70 and the 30-A TPS544C20 is priced at $3.90 (1000).

TI; www.ti.com/tps544b20-pr-eu / www.ti.com/tps544c20-pr-eu