TI Offers TPS54x80 Series SWIFT DC/DC Converters
Texas Instruments Inc. (TI, Dallas, TX) announced a synchronous buck dc/dc converter family that addresses critical power supply sequencing requirements in low-voltage, high-density, point-of-load systems that use digital signal processors and field-programmable gate arrays. The TPS54x80 Series of SWIFT dc/dc converters contain two internal MOSFETs capable of supplying up to 9A of continuous output current over the entire operating temperature range. The converters regulate to a voltage as low as 0.891V, and use a TRACKIN pin with a multiplexer to implement three different sequencing methods: simultaneous, sequential or ratio-metric sequencing.
In addition to the TPS54x80, TI introduced its TPS54x73 dc/dc converters for applications that require a pre-bias output condition. The TPS54x73 devices provide reliable power-up when the core and I/O voltages of a processor are required to track each other within a certain voltage differential during startup. The core’s voltage supply output is connected to the output of the I/O voltage supply with a series of diodes. The core voltage level is equal to the I/O voltage minus the diode voltage drop during startup. With the disable current sinking during startup feature, the pre-biased load cannot be pulled to ground.
The TPS54x80 and TPS54x73 SWIFT converters are available in volume through TI and its authorized distributors. Each device is packaged in 20-pin or 28-pin PowerPAD, thin-shrink, small-outline packages for thermal enhancement and space savings. Suggested resale pricing starts at $3.45 per 1,000 units.
