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HVAC (Air conditioning)

Heating, Ventilation and Air Conditioning (HVAC) systems have become increasingly commonplace. However there has been a clear drive towards greater efficiency to meet the demand for more sustainable and eco-friendly units. Improving overall system efficiency and thermal performance is fundamental to this change through variable speed compressors or inverter technology. In addition, smart HVAC systems are increasingly interconnected and draw data from both internal and external sensors including external temperature, humidity, brightness, and even the position of the sun.

Block diagram

Highlighted components are Nexperia focus products

设计考虑因素

  • 开始采用PWM驱动无刷直流电机控制
  • 电机驱动MOSFET必须以低RDSon和良好的热阻抗来满足峰值高电流需求
  • 如果过载情况会降低电池和栅极电压，则可能需要具有强线性模式性能的MOSFET来提供反向电池保护
  • MOSFET可能需要满足UL2595等的具体间距要求
  • 为小尺寸优化的电荷平衡MOSFET，通常装在可移动电池组中——每个电池一个
High current 3-phase BLDC motor drive application

High current 3-phase BLDC motor drive application

Power engineers are often presented with new, smaller package options. Here we look at Nexperia’s LFPAK 8 x 8 MOSFETs demonstrating their ability of both the high current performance and the thermal characteristics.

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MOSFET and GaN FET Handbook

Drawing on over 20 years’ of experience, the MOSFET and GaN FET Application Handbook: A Power Design Engineer’s Guide brings together a comprehensive set of learning and reference materials relating to the use of MOSFETs and GaN FETs in real world systems.

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