Nuvoton’s motor driver IC incorporates A2PRaS (Auto Advanced Phase & Rapid Softswitch) technology. Advanced phase function is generally adopted for motor driving applications with high-speed rotation. However, this technique alone is not enough to achieve high efficiency. By implementing auto-advanced phase control together with rapid soft switching, our IC realizes high efficiency at a wide speed range and in each operating condition.

• Features
  

  -	Using a 4mm2 package with die capable of 48V direct input to realize a 40mm2 fan motor
  -	Wide range of operation suitable for 12/24/48V single phase motors
  -	Various setting for A2PRaS and other parameters is possible via the dedicated built in OTM(One-Time Memory)

• Specifications
  

  -	Motor Driver IC (KA44370A)
  -	Operating voltage: 8.0V to 76V
  -	Absolute max capability of gate driver ±100mA (NN drive)
  -	Small 4mm2 HQFN-32 Package

• System Block Diagram