Features
- DLA SMD 5962-12202
- Maximum output current (single-phase):
- 22A with external Schottky (TJ ≤ 125°C, PVIN ≤ 5.5V)
- 18A (TJ ≤ 125 °C, PVIN ≤ 5.5V)
- 14A (TJ ≤ 125 °C, PVIN ≤ 6.2V)
- 12A (TJ ≤ 150 °C, PVIN ≤ 6.2V)
- Maximum output current (dual-phase)
- 38A (27% worst case current sharing)
- 1MHz or 500kHz switching frequency
- 3V to 6.2V supply voltage range
- ±1% reference voltage (line, load, temperature, and rad)
- Redundancy/Junction isolation: Exceptional SET performance
- Excellent transient response
- High efficiency >90%
- Two ISL73002SEH synchronization, inverted-phase
- Comparator input for enable and power-good
- Input undervoltage, output undervoltage, and adjustable output overcurrent protection
- QML qualified per MIL-PRF-38535
- Full military temperature range operation (-55°C to +125°C)
- Radiation environment
- LDR (0.01rad(Si)/s): 50krad(Si)
- SEE hardness
- SEL and SEB LETTH 86.4MeV/mg/cm2
- SEFI LETTH 43MeV/mg/cm2
- SET LETTH 86.4MeV/mg/cm2
Description
The ISL73002SEH is a radiation hardened and SEE hardened high-efficiency monolithic synchronous buck regulator 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 capability is primarily determined by the PVIN voltage, with up to 22A for a single IC at PVIN ≤ 5.5V for TJ ≤ +125°C. Two ISL73002SEH devices, configured to current share, can provide up to 38A of total output current at PVIN ≤ 5.5V for TJ ≤ +125°C, assuming ±27% worst-case current share accuracy. The ISL73002SEH uses peak current-mode control with integrated error amp compensation and pin-selectable slope compensation. The switching frequency is also pin selectable to either 1MHz or 500kHz. Two devices can be synchronized 180° out-of-phase to reduce input RMS ripple current. High integration makes the ISL73002SEH an ideal choice to power 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.
Parameters
| Attributes | Value |
|---|---|
| Rating | Space |
| Control Mode | Peak Current Mode |
| IOUT Rail 1 (max) (A) | 22 |
| No-Load Operating Current | 70 mA |
| Outputs (#) | 1 |
| Quiescent Current | 2.5mA |
| Supply Voltage Rail 1 (min) (V) | 3 |
| Supply Voltage Rail 1 (max) (V) | 6.2 |
| Switching Frequency (min) (kHz) | 500kHz, 1000kHz |
| Switching Frequency (max) (kHz) | 500kHz, 1000kHz |
| VOUT Rail 1 (min) (V) | 0.6 |
| VOUT Rail 1 (max) (V) | 4.675 |
| Temp. Range (°C) | -40 to +85°C, -40 to +105°C, -40 to +125°C, -55 to +125°C |
| TID HDR (krad(Si)) | 100 |
| TID LDR (krad(Si)) | 100 |
| DSEE (MeV·cm2/mg) | 86, 86.4 |
| Flow | RH Hermetic |
| Qualification Level | Class V, EM |
| Die Sale Availability? | Yes |
| PROTO Availability? | Yes |
Applications
- FPGA, CPLD, DSP, CPU core, and I/O voltages
- Low-voltage, high-density distributed power systems
Renesas Boards & Kits
Differential Remote Sensing Evaluation Board
The ISL70002SEHEVAL3Z evaluation board is designed to demonstrate the features of the ISL70002SEH or ISL73002SEH, Total Ionizing Dose (TID) and Single-Event Effects (SEE) hardened 22A synchronous buck regulator ICs with integrated MOSFETs intended for space applications.
The ISL70002SEHEVAL3Z is... Read More
Power Management Reference Design for AMD Versal XQRVC1902
The ISLVERSALDEMO2Z board provides power management for the AMD Xilinx Space Grade Versal ACAP AI Core VC1902 using Renesas' radiation hardened power management devices. The Versal ACAP system requires various supply rails, including the core, digital, analog, and DDR memory. The ISLVERSALDEMO2Z... Read More
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... Read More
Radiation Hardened Power Solution for RTG4 FPGA
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... Read More
Rad Hard Virtex 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 Read More
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