Battery-powered motor control drive (25-100 V)

Thanks to the rise of powerful motors which can be driven by a heavy duty lithium battery that can be charged quickly, cordless devices are quickly replacing a whole range of mains-powered consumer and industrial equipment from power tools to vacuum cleaners. With more power comes the need for greater safety, as set by new standards such as UL2595. Our MOSFETs combine the power and packages you need, without sacrificing safety.

Block diagram

Highlighted components are Nexperia focus products

Products - Motor drive

Products

Design considerations

Trend is towards PWM driven Brushless DC motor control
Motor Drive MOSFETs must handle peak high current demands with low R_DSon and good thermal impedance
MOSFET with strong linear mode performance may be required for reverse battery protection if overload conditions reduce battery and gate voltages
MOSFETs may need to meet specific spacing requirements like UL2595
Charge balancing MOSFETs optimised for small form factor usually housed in removable battery pack – one for each cell

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