Microchip MCP8025三相BLDC马达驱动方案
Microchip公司的MCP8025/6是三相无刷DC(BLDC)马达栅极驱动器,包括有三个能驱动三个外接NMOS/NMOS晶体管对的半桥驱动器,在12V时可提供0.5A的峰值输出电流.器件集成了比较器,降压稳压器,两个LDO稳压器,电源监测比较器,超温传感器,LIN收发器,零交叉检测器,中性模拟器和运算放大器.主要用在汽车燃料泵,水泵和通风马达,家用电器,PMSM控制,业余爱好飞机,船和卡车.本文介绍了MCP8025/6主要特性,框图和典型应用电路,以及MCP8025 TQFP BLDC马达驱动评估板主要特性,框图,电路图,材料清单和PCB设计图.
The MCP8025/6 devices are 3-phase brushless DC(BLDC) power modules containing three integratedhalf-bridge drivers capable of driving three externalNMOS/NMOS transistor pairs. The three half-bridgedrivers are capable of delivering a peak output currentof 0.5A at 12V for driving high-side and low-side NMOSMOSFET transistors. The drivers have shoot-through,overcurrent and short-circuit protection. A Sleep Modehas been added to achieve a typical “key-off” quiescentcurrent of 5 μA.
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