TI launches the first DDR memory-termination linear regulator for space applications

Radiation-hardened power-management device integrates comprehensive functionality in an ultra-small form factor

Texas Instruments (TI) introduced the industry's first double-data-rate (DDR) memory linear regulator for space applications. The TPS7H3301-SP is 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 percent smaller than a switch-mode regulator DDR solution.

Key features and benefits:

• Small size:
  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.
   
• Superior radiation performance:
  Along with industry-leading 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.
   
• Easy design-in:
  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.
   
• Maximum export:
  The device is controlled under U.S. Department of Commerce Export Control Classification Number (ECCN) EAR99.

Tools and support to jump-start designs

Designers can reduce development time and quickly complete worst-case circuit analysis by downloading a full-capability linear regulator SPICE model.

TPS7H3301-SP DDR Termination Evaluation Module.

Package and availability

The TPS7H3301-SP is available now 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).