Radiation Hardened and SEE Hardened 22A Synchronous Buck Regulator with Current Sharing
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概要
Description
The ISL70002SEH 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 PVIN voltage with up to 22A for a single IC at PVIN ≤ 5. 5V for TJ ≤ +125°C. Two ISL70002SEH 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 ISL70002SEH uses peak current-mode control with integrated error amp compensation and pin-selectable slope compensation. 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 ISL70002SEH 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.
特長
- 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 ISL70002SEH 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
- HDR (50-300rad(Si)/s): 100krad(Si)
- 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
アプリケーション
アプリケーション
- FPGA, CPLD, DSP, CPU core and I/O voltages
- Low-voltage, high-density distributed power systems
ドキュメント
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データシート
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アプリケーションノート
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アプリケーションノート
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カタログ
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カタログ
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マニュアル－開発ツール
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マニュアル－開発ツール
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マニュアル－開発ツール
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マニュアル－開発ツール
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その他資料
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Price Increase Notice
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レポート
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レポート
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レポート
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技術概要
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技術概要
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PDF799 KB
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設計・開発
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製品選択
Processing table
| CQFP | Tray | 1 | |||
| CQFP | Tray | 1 | |||
| CQFP | Tray | 25 | 5962R1220201VXC | ||
| CQFP | Tray | 25 | 5962R1220201VYC | ||
| DIE | 10 | 5962R1220201VYC | |||
| DIE | 5 |
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