概览
描述
The ISL73847M is a synchronous buck controller that can operate as a single or dual-phase controller. It works with the ISL71441M (half-bridge GaN FET driver) to generate point-of-load voltage rails for commercial space applications.
It accepts an input voltage range of 4.5V to 19V with a programmable PWM output switching frequency between 250kHz and 1.5MHz with a single resistor. The output can regulate a voltage upwards of 600mV and is limited on the top end by the minimum off time and selected switching frequency.
The wide input voltage range makes it a suitable power supply option for a high-current FPGA core and other general-purpose power solutions. The ISL73847M uses current mode modulation, which simplifies loop compensation and provides excellent power supply rejection. Additionally, the output is remotely sensed to compensate for any voltage drop in the load conditions. Together, this results in a robust power supply solution that requires minimal components while achieving high current density.
特性
- Qualified to Renesas Rad Tolerant Screening and QCI Flow (R34TB0004EU)
- Wide operating voltage range:
- Input: 4.5V to 19V
- Output: 0.6V to V PWR_STAGE ×((TSW -120ns)/TSW)
- Programmable PWM output switching frequency
- 250kHz to 1.5MHz
- Optional droop regulation
- Current mode control provides
- Excellent power supply rejection
- Simplified control scheme
- Output differential remote sensing
- Programmable soft-start
- Enable control
- Power-good Indicator
- TID Radiation Lot Acceptance Testing (LDR: ≤0.01rad(Si)/s)
- ISL73847M30BZ: 30krad(Si)
- ISL73847M50BZ: 50krad(Si)
- SEE Characterization
- No DSEE with VDD = 25V and 43MeV•cm2/mg
- SEFI <3μm2 at 43MeV•cm2/mg
- SET <2% on VOUT at 43MeV•cm2/mg
产品对比
应用
文档
相关文档
请登录后开启订阅
|
|
|
|
|---|---|---|
| 类型 | 文档标题 | 日期 |
| 数据手册 | PDF 2.57 MB | |
| 应用说明 | PDF 391 KB | |
| 应用说明 | PDF 351 KB | |
| 技术摘要 | PDF 356 KB | |
| 应用说明 | PDF 224 KB | |
5 items
|
||
设计和开发
软件与工具
软件与工具
| Software title
|
Software type
|
公司
|
|---|---|---|
| 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。
|
Simulator | 瑞萨电子 |
1 item
|
||
开发板与套件
演示
Radiation Tolerant Compact Dual Phase 12V to 1V, 50A Capable Power Supply Demonstration Board
The ISL73847MDEMO1Z demonstration board demonstrates the performance of the ISL73847M dual-phase buck controller. The board is optimized for a 4.5V to 15V input operation to generate a 50A max, 1V output.
Recommended Documents:
演示
Radiation Tolerant Compact Single Phase 12V to 1V, 25A Capable Power Supply Demonstration Board
The ISL73847MDEMO2Z demonstration board demonstrates the performance of the ISL73847M dual-phase buck controller in single-phase mode. The board is optimized for a 4.5V to 15V input operation to generate a 25A max, 1V output.
Recommended Documents:
模型
ECAD 模块
点击产品选项表中的 CAD 模型链接，查找 SamacSys 中的原理图符号、PCB 焊盘布局和 3D CAD 模型。如果符号和模型不可用，可直接在 SamacSys 请求该符号或模型。
产品选项
当前筛选条件