On Semi NCP1397采用GaN HEMT器件电源参考设计
On Semi公司的NCP1397高性能电源转换控制器,集成了600V栅极驱动器,简化了PCB布局和降低外接元件数量,工作频率从50 kHz到500 kHz,开关频率精度±3%,主要用在平板显示器电源,大功率AC/DC转换器,计算机电报挂号源,工业和医疗设备电源,离线电池充电器.本文介绍了NCP1397主要特性, 内部框图, 典型应用电路图以及高压驱动器评估板NCP1397GANGEVB主要特性,电路图和材料清单.
The NCP1397 is a high performance controller that can be utilized in half bridge resonant topologies such as series resonant, parallel resonant and LLC resonant converters. It integrates 600 V gate drivers, simplifying layout and reducing external component count. With its unique architecture, including a 500 kHz Voltage Controlled Oscillator whose control mode permits flexibility when an ORing function is required, the NCP1397 delivers everything needed to build a reliable and rugged resonant mode power supply. The NCP1397 provides a suite of protection features with configurable settings to optimize any application. These include: auto-recovery or fault latch-off, brown-out, open optocoupler, soft-start and short-circuit protection. Deadtime is also adjustable to overcome shoot through current.
NCP1397主要特性:
• High−Frequency Operation from 50 kHz up to 500 kHz
• 600 V High−Voltage Floating Driver..
