双极性晶体管

二极管

ESD保护、TVS、滤波和信号调节ESD保护

MOSFET

SiC power devices

氮化镓场效应晶体管(GaN FET)

绝缘栅双极晶体管(IGBTs)

模拟和逻辑IC

汽车应用认证产品(AEC-Q100/Q101)

Low-voltage (< 48 V) bipolar stepper motor

Compared to their unipolar counterparts, low-voltage (< 48 V) bipolar stepper motors offer higher torque density and improved efficiency. By driving current in both directions through a single winding, bipolar motors deliver superior torque-to-size ratios, although this does come at the cost of a more complex H-bridge drive topology. Higher winding inductance, back-EMF at elevated speeds, and the need for precise current control across all four switching elements further increase design complexity.

  • 框图
  • Design considerations
  • Design resources
  • Product listing
  • 支持

框图

AC / DC Power management Input powerprotection Gatedriver Commsinterrface Signalprocessing Sensorinterface aaa-045214 Inverter stage CPU CAN Wired / Wireless grid Highlighted components are Nexperia focus products.

选择元件

想要查看本应用中,所使用的 Nexperia 元件的更多信息,请选择上面的元件或单击框图中的元件(蓝色突出显示的部分)。

Design considerations

  • Mismatched RDS(on) between high- and low-side devices introduces current asymmetry, degrading step accuracy and increasing audible noise
  • Inadequate dead-time control can cause shoot-through, resulting in destructive cross-conduction currents
  • With four active switching elements per phase versus two in a unipolar design, total power dissipation and switching losses are higher

Product listing