NJM2670D2

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NJM2670D2 is a three-phase brushless DC motor driver and controller IC integrated circuit intended for use with PMICs (Power Management Integrator Circuits). It is mainly intended for three-phase brushless DC motor applications, such as air conditioner fans, pumps, compressors, blowers and general industrial motors. It supports a wide input voltage range from 10V to 60V, and features an integrated linear current regulator with soft start and stall detection for added reliability and safety.

The NJM2670D2 is designed for use with PMICs in order to reduce component count and maximize system efficiency. By using a PMIC, the fundamental components needed for a three-phase brushless DC motor system are condensed into a single package which requires few additional external components. The PMIC eases the development of a motor driver and controller system, while delivering excellent system performance and reliability.

The NJM2670D2 IC is composed of an input section and an output section. The input section has two comparators and one timer circuit, while the output section is composed of 10 FET drivers. The input section contains two comparators that compare the motor voltage to a reference voltage, and a timer circuit that sets the motor speed and the zero-crossing points in the PWM waveform. The output section contains 10 FET drivers which drive the three-phase brushless DC motor.

The control circuit of the NJM2670D2 is designed for efficient and reliable operation. The PWM comparator constantly maintains a fixed wide range of motor speed. The system will also monitor the voltage of the motor to assure safe operation. In addition, the IC has a current limit circuit to protect the motor from sudden overloads. The NJM2670D2 includes a stall detect circuit which will detect open or short-circuits in the motor and immediately shut down the motor if necessary.

The NJM2670D2 IC is part of a complete suite of PMICs for three-phase brushless DC motor systems. It is designed to reduce circuit complexity, providing excellent system performance, reliability and safety in the most demanding motor applications. It is ideal for a variety of brushless DC motor applications, such as air conditioner fans, pumps, compressors, blowers and general industrial motors.

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