KA44370A is a gate driver IC for driving single-phase motors. The output stage, which can directly drive an external power MOSFET at 48V, is assembled in a small 4mm x 4mm QFN package, making it possible to mount the IC on a small motor despite the 48V requirement. The motor current waveform can be selected from a sinusoidal or a trapezoidal wave, which is generated by our unique Auto Phase Control technology, achieving low power consumption, low vibration and high airflow with high-speed rotation. A2PRaS (Advanced Auto Phase & Rapid Softswitch) function is also installed which allows the setting of advanced phase in order to achieve even higher speed rotation. It provides optimal motor drive control for a variety of applications. Stable and reliable motor start-up is possible even in the case of mutual interference when multiple fan motors are used, or when reverse rotation takes place due to external airflow.

Specification

Data Sheet

Item	Performance characteristics
Sub-Family Description	Single-phase BLDC motor driver
Control Method	A2PRaS, PWM Sinusoidal control
Control interface	PWM/DC
Ron (Ohm)	Pre-Dr
Operating Voltage (V)	12V / 24V / 48V
Operating ambient temperature[min](°C)	-40
Operating ambient temperature[max](°C)	105
Package	QFN32L 4x4mm Body Lead Pitch_0.4mm

Recommended Circuit

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 Evaluation Board

 Evaluation Board & Interface board

KE-K44370USB  - KA44370A single-phase PWM/VSP motor driver evaluation board & Interface board
The KE-K44370USB is an evaluation kit that unifies the evaluation board(KE-KA44370) with the interface board. It enable to set various parameters easily from PC, to support motor evaluation. User Manual