特長
- ±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 in 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)
説明
The ISL70001SRH is a radiation hardened and Single-Event Effect (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 capacity is 6A for TJ < +145°C. High integration and class-leading radiation tolerance make the ISL70001SRH an ideal choice 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’.
パラメータ
| 属性 | 値 |
|---|---|
| Rating | Space |
| Control Mode | Peak Current Mode |
| IOUT Rail 1 (max) (A) | 6 |
| No-Load Operating Current | 40 mA |
| Outputs (#) | 1 |
| Quiescent Current | 2mA |
| Supply Voltage Rail 1 (min) (V) | 3 |
| Supply Voltage Rail 1 (max) (V) | 5.5 |
| Switching Frequency (min) (kHz) | 1000 |
| Switching Frequency (max) (kHz) | 1000 |
| VOUT Rail 1 (min) (V) | 0.6 |
| VOUT Rail 1 (max) (V) | 4.675 |
| Temp. Range (°C) | -55 to +125°C |
| TID HDR (krad(Si)) | 100 |
| DSEE (MeV·cm2/mg) | 86, 86.4 |
| Flow | RH Hermetic |
| Qualification Level | Class Q, Class V, EM |
| Die Sale Availability? | Yes |
| PROTO Availability? | Yes |
アプリケーション
- FPGA, CPLD, DSP, CPU core or I/O voltages
- Low-voltage, high-density distributed power systems
Renesas Boards & Kits
Radiation Hardened and SEE Hardened 6A Synchronous Buck Regulator with Integrated MOSFETs Evaluation Board
The ISL70001SRHEVAL1Z evaluation board is designed to demonstrate the features of the ISL70001SRH, a Total Ionizing Dose (TID) and Single-Event Effect (SEE) hardened 6A synchronous buck regulator IC with integrated MOSFETs intended for space applications.
The ISL70001SRHEVAL1Z evaluation board... 続きを読む
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 続きを読む
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... 続きを読む
