Renesas offers a complete solution for powering radiation hardened FPGAs. Many space-grade FPGAs require a core voltage of 1.0V, which is supplied by the ISL70002SEH, an auxiliary voltage of 2.5V, which is supplied by the ISL70001SEH, and an I/O voltage of 3.3V which is supplied by the ISL75051SRH.

The ISL70001SEH and ISL70002SEH are total dose and SEE hardened high efficiency, monolithic synchronous buck regulators with integrated MOSFETs. These single-chip power solutions operate over an input voltage range of 3V to 5.5V and provide a tightly regulated output voltage that is externally adjustable from 0.8V to ~85% of the input voltage. The ISL70001SEH can provide up to 6A (TJ ≤ +145 °C) of output current while the ISL70002SEH can provide up to 12A (TJ ≤ +150 °C) of output current.

The ISL75051SRH is a radiation hardened, low voltage, high current, single output LDO specified for up to 3.0A of continuous output current. It can operate over an input voltage range of 2.2V to 6.0V and is capable of providing output voltages of 0.8V to 5V with an external resistor divider. Dropout voltages as low as 65mV can be realized with this device.

Disclaimer: THIS MATERIAL IS PROVIDED “AS-IS” FOR EVALUATION PURPOSES ONLY. RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (collectively, “Renesas”) DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION, FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY. Renesas provides evaluation platforms and design proposals to help our customers to develop products. However, factors beyond Renesas' control, including without limitation, component variations, temperature changes, and PCB layout, could significantly affect the product performance. It is the user’s responsibility to verify the actual circuit performance.


  • Designed for SET immunity
  • Optimized to power multi-channel FPGA devices, like Xilinx’s Virtex-5 FPGA
  • Features the ISL70001SRH and ISL70002SRH, rad hard POL buck regulators along with the ISL75051RH rad hard LDO
  • Core voltage of 1.0V is supplied by the ISL70002SRH
  • Auxiliary voltage of 2.5V is supplied by the ISL70001SRH
  • I/O voltage of 3.3V is supplied by the ISL75051RH



  • FPGA power for space and harsh environments


Type Title Date
Manual - Development Tools PDF 1.32 MB
Datasheet PDF 654 KB
Datasheet PDF 1.05 MB
Datasheet PDF 947 KB
Application Note PDF 304 KB
5 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
PCB Design Files ZIP 328 KB
PCB Design Files PDF 98 KB
PCB Design Files XLS 38 KB
3 items
FPGA Reference Design for Rad Hard Applications

Josh Broline discusses the FPGA reference design featuring the ISL70001SEH, ISL70002SEH, and ISL75051SRH radiation hardened products at APEC 2013.


Hello from APEC 2013 here in Long Beach, CA. My name is Josh Broline, I'm the product marketing manager for Space and High reliability products group here at Intersil. Here we are demoing Intersil's FPGA reference design, specifically for Xilinx. We have three point-of-load regulators, the ISL70001SEH, which is a 6A regulator. Also, we have the ISL70002SEH, which has an output of 12A. It can also be powered off of a 3.3V or 5V rail. And last, we have the ISL75051, which is a 3A, low dropout regulator. It has superior dropout performance. For example, at 65mV at 1.5A, or about 225mV at 3A. I would actually put this product up specifically next to a commercial type product.

The critical thing to know about these particular products is that we did specific roundup designs to ensure that these products would survive the space and harsh environments. For example, we have single event transient immunity within plus or minus 1%. So if you have a stack up say at plus or minus 5%, that is absolutely critical very tight performance, whether it be at single event transient over radiation and all the different conditions that you would run into. For more information, you can go to the Space and Harsh Environments product page on our website. We have reference designs, application notes. You can get schematics and layout files or you can find more information on these particular products. Also, you can go to the specific product information pages for each individual product.