DDR memory-termination linear regulator for space applications
The TPS7H3301-SP is, TI asserts, the only DDR regulator immune to single-event effects up to 65 megaelectron volts per centimeter 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 TPS7H3301-SP is up to 50% smaller than a switch-mode regulator DDR solution. TI claims superior radiation performance: with high level of immunity, 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. As with TI’s entire space portfolio, 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.
The TPS7H3301-SP is available in a 16-pin dual-ceramic flat package that is Qualified Manufacturer List (QML) Class V and 100 krad (silicon) radiation hardness assurance (RHA) qualified (5962R1422801VXC).
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