Overview
Description
The ISL70001SEH, ISL70001SRH are radiation hardened and SEE hardened high efficiency monolithic synchronous buck regulators with integrated MOSFETs. This single-chip power solution operates over an input voltage range of 3V to 5.5V and provides a tightly regulated output voltage that is externally adjustable from 0.8V to ~85% of the input voltage. Output load current capacity is 6A for TJ < +145 °C. High integration and class-leading radiation tolerance make the ISL70001SEH, ISL70001SRH ideal choices to power many of today’s small form factor applications. Two devices can be synchronized to provide a complete power solution for large-scale digital ICs, like field-programmable gate arrays (FPGAs) that require separate core and I/O voltages. In applications where the ENABLE input is tied high to PVIN we recommend that the input voltage ramp rate be equal to or greater than 10V/ms. This is to prevent unwanted voltage from prematurely appearing on the output. For a PVIN voltage that has a slower ramp rate or is stepped up we recommend the use of the ISL70001ASEH. Ensuring that the ENABLE input is held low until the chosen VINPOR is satisfied will prevent this ‘false start’.
Features
- ±1% reference voltage over line, load, temperature and radiation
- Current mode control for excellent dynamic response
- Full Mil-temp range operation (TA = -55 °C to +125 °C)
- High efficiency >90%
- Fixed 1MHz operating frequency
- Available in a thermally enhanced heatsink package - R48.B
- Operates from 3V to 5.5V supply
- Adjustable output voltage
- Two external resistors set VOUT from 0.8V to ~85% of VIN
- Bidirectional SYNC pin allows two devices to be synchronized 180° out-of-phase
- Starts into prebiased load
- Power-good output voltage monitor
- Adjustable analog soft-start
- Input undervoltage, output undervoltage and output overcurrent protection
- Electrically screened to DLA SMD 5962-09225
- QML qualified per MIL-PRF-38535 requirements
- EH version is wafer-by-wafer acceptance tested for ELDRS
- Radiation hardness
- Total dose [50-300rad(Si)/s]: 100krad(Si) (min)
- Total dose [<10mrad(Si)/s]: 50krad(Si) (min)
- SEE hardness
- SEL and SEB LETeff: 86.4MeV/mg/cm2 (min)
- SEFI X-section (LETeff = 86.4MeV/mg/cm2) 1.4 x 10-6 cm2 (max)
- SET LETeff (<1 pulse perturbation) 86.4MeV/mg/cm2 (min)
Comparison
Applications
Design & Development
Software & Tools
Software & Tools
| Software title
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Software type
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Company
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|---|---|---|
| iSim:PE Offline Simulation Tool iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
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Simulator | Renesas |
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Boards & Kits
Reference Designs
Rad Hard Vitex 5 FPGA Power Solution Reference Design
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
Evaluation
ISL70001SRHEVAL1Z
Active
Rad Hard & SEE Hard 6A Synchronous Buck Regulator Evaluation Board
The ISL70001SRHEVAL1Z evaluation board is designed to demonstrate the features of the ISL70001SRH, a TID and SEE hardened 6A synchronous buck regulator IC with integrated MOSFETs intended for space applications.
The ISL70001SRHEVAL1Z evaluation board accepts a nominal 3V to 5.5V input voltage...
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Reference Designs
ISLKU060DEMO1Z
Active
Renesas Rad Hard Power Management Reference Design for AMD's Space Grade XQRKU060
Over the last decade, satellites and spacecraft have seen an exponential increase in the need for onboard data processing and storage demands. Additionally, major satellite manufacturers have recently announced their latest satellites to be modular, fully digital, and capable of in-orbit...
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Product Options
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