Single Phase Solution Capable of 12A Max Load Current
The ISL70002SEHEVAL1Z evaluation board is used to evaluate the features of the ISL70002SEH radiation hardened and SEE hardened 22A synchronous buck regulator IC with...
概览
描述
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.
特性
- 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
产品对比
应用
- FPGA, CPLD, DSP, CPU core and I/O voltages
- Low-voltage, high-density distributed power systems
设计和开发
软件与工具
软件与工具
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Software type
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公司
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| iSim:PE 离线模拟工具 iSim Personal Edition（iSim:PE ）可加快设计周期并降低项目早期风险，确定可用于当前和下一代设计的部件。
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Simulator | 瑞萨电子 |
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