DDR memory-termination linear regulator targets space applications

The industry’s first double-data-rate (DDR) memory linear regulator for space applications has been launched. Texas Instruments says its TPS7H3301-SP is the only DDR regulator immune to single-event effects up to 65 megaelectron volts per centimetre squared (MeV-cm2), powering space-satellite payloads including single-board computers, solid-state recorders and other memory applications.

Integrating two monolithic power field-effect transistors (FETs) for source and sink termination and an internal voltage reference, the regulator is up to 50 per cent smaller than a switch-mode regulator DDR solution.

At 0.16 square inches, the device is up to 50 percent smaller than a switch-mode regulator DDR solution, delivering critical weight and launch cost savings. The device withstands a total ionizing dose of up to 100 krad. Its stable termination power supply ensures that single-event effects do not impact read-and-write operations.

Designers can pair the TPS7H3301-SP with the TPS50601-SP buck converter to create the smallest complete power solution for DDR memory. Designers have access to a full suite of support resources, including comprehensive radiation reports, on-demand training and Simulation Program with Integrated Circuit Emphasis (SPICE) models.

The device is controlled under U.S. Department of Commerce Export Control Classification Number (ECCN) EAR99.

http://www.ti.com

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