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 & Harsh Environment

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL70001SEH, ISL70001SRH Datasheet Datasheet PDF 648 KB
ISL75051SEH, ISL75051SRH Datasheet Datasheet PDF 947 KB
ISL70002SEH Datasheet Datasheet PDF 1010 KB
User Guides & Manuals
VIRTEX5MEZPWREV1Z User Guide Manual PDF 1.32 MB
Application Notes & White Papers
AN1947: Intersil's Radiation Hardened Low Power FPGA Power Solutions Application Note PDF 304 KB
Schematics for the VIRTEX5MEZPWREV1Z Evaluation Board Design File PDF 98 KB
Artwork files for the VIRTEX5MEZPWREV1Z Evaluation Board Design File ZIP 328 KB
VIRTEX5MEZPWREV1Z Bill of Materials Design File XLS 38 KB

News & Additional Resources