Power Integrations BridgeSwitch 系列400W三相逆变器解决方案

Power Integrations公司的BridgeSwitch™系列是高度集成的半桥集成电路,在单片小引脚封装内集成了两路具有低边和高边驱动器的高压N沟功率FREDFET.内部的600V功率FREEFET提供超软和超快二极管,非常适合硬开关逆变器驱动.两个驱动器是自供电的,不需要外接辅助电源. BridgeSwitch™系列提供独特的瞬态相电流输出信号,简化了无传感器控制方案的实现.小型紧凑占位表面安装封装提供了扩展的爬电距离,允许通过PCB把两个功率FREDFET的散热器放在一起.器件提供内部故障保护功能和外不系统级监视. 内部故障保护功能包括两个FREDFET的逐个周期的电流限制和两级热过载保护.外接系统监视包括DC总线检测,具有四个欠压电平和一个过压电平以及驱动外接传感器如NTC.双向总线单线状态接口报告所观测到的状态变化.全集成半桥级的效率高达99.2%. SOP-24C封装.主要用在1相或3相高压PM和BLDC马达驱动,高达400W逆变器输出功率,包括洗碗机和电冰箱在家用电器,高效率空调器的冷凝器风扇.本文介绍了BridgeSwitch™系列产品亮点, 典型3相逆变器电路图(BRD126X),以及BRD116x和BRD126x功能框图, BRD1265C三相逆变器电路图(DER-654)以及采用BridgeSwitchTM BRD1267C和LinkSwitchTM-TN2 LNK3204D器件的400W三相逆变器主要优势和特性,电路图,材料清单和PCB设计图.

The BridgeSwitch™ family of integrated half-bridges dramatically simplifies the development and production of high-voltage inverter driven 1 or 3-phase PM or BLDC motor drives. It incorporates two high-voltage N-channel power FREDFETs with low and high-side drivers in a single small-outline package. The internal power FREDFETs offer

ultra-soft and ultrafast diodes ideally suited for hard switched inverter drives. Both drivers are self-supplied eliminating the need for an external auxiliary power supply. BridgeSwitch provides a unique instantaneous phase current output signal simplifying implementation of sensor-less control schemes. The low-profile, compact footprint surface mount package offers extended creepage distances and allows heat sinking of both power FREDFETs through the printed circuit board. BridgeSwitch offers internal fault protection functions and external system leve...