方案
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Controllers | NCP81147
概览
NCP81147 是一款单相方案，带有差分相电流感应、同步输入、远程接地节电运行和门极驱动器，可提供准确调节的功率。自适应非覆盖门极驱动器和节电运行电路可为服务器、笔记本电脑和台式机系统提供低开关损耗和高能效方案。提供高性能运行误差放大器，简化了系统的补偿。NCP81147 特性还包括软启动序列、准确过电压和过电流保护、用于电源轨的 UVLO，以及高温关断。
- Desktop and Server Systems
- Internal High Performance Operational Amplifier
- Supports 5.0 V to 19 V input
- 5.0 V to 12 v operation
- Chip enable feature through the OSC pin
- Integrated MOSFET drivers
- Guaranteed startup into pre-charged loads
- Thermal shutdown protection
- Overvoltage and over current protection
- Internal softstart / stop
- Oscillator frequency range of 100 kHz to 1000 kHz
- Power Saving Mode
- OCP accuracy, Four re-entry times before latch
- Lossless differential inductor current sensing
- Internal High precision current sensing amplifier
- 20ns Adaptive FET non-overlap time of internal Gate Driver
- Vout from 0.8V to 3.3V (5V with 12V VCC)
- Thermally compensated current monitoring
- Integrated Boost diode with internal Rbst=2.2
- Load Operation
- Sync Function
- Remote Ground Sensing
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