Nippon Wireless has developed the NJW4303, a three-phase DC brushless motor control IC that is best suited for fans, blowers, air pumps, and other appliances/OA equipment equipped with three-phase DC brushless motors, and is available now. This article refers to the address: http:// Previous home appliances/OA equipment and industrial equipment mainly used brushed DC motors that were easy to control, but three-phase DCs for various purposes were caused by the wear of the brushes, which caused many problems in terms of life/reliability. The brushless motor has been advanced. In addition, the conventional fan motor using a three-phase DC brushless motor has been diversified in terms of power, automobile, and industrial equipment. Therefore, there is a strong demand for the development of a motor controller that can be used for various purposes. In order to meet the market demand, Nippon Wireless has developed a three-phase DC brushless motor control IC NJW4303. ã€product features】 Feature 1 Multi-function makes it suitable for a wide range of uses It is equipped with various functions such as soft start function, ON/OFF function, brake function, lock protection function, etc., so that it can be used not only for home appliances/OA equipment, but also for various purposes such as automobiles and industrial equipment. Feature 2 High-resistance (40V) expands its use With a high resistance to 40V, it can be used for applications requiring voltage tolerance for motors and automotive electronic components such as 24V drives. Thanks to the BCD technology*, the low current consumption of the logic section is realized, so that the heat generation of the IC itself is suppressed, and it can be mounted on an application device having a high temperature requirement. ã€application】 [product performance] Digital currency transactions allow users to convert existing digital currencies into other digital currencies. The entire transaction does not involve any legal tender. Because of the relatively loose regulation, the mainstream digital currency trading platform also opened this function.Digital Asset Exchange (DAE) is a platform for matching transactions between digital currencies, digital currencies and legal currencies. It is the main place for encrypting the circulation and price determination of digital currency transactions. Currency Exchange,Digital Currency Exchange,Virtual Digital Currency Exchange,Display Currency Exchange China youbi digital assets limited , http://www.ubcoinchina.com
The NJW4303 is a highly versatile three-phase DC brushless motor control IC. It is a totem-pole output circuit for the power MOSFET (Nch) for driving the lower arm and an open-drain for the power MOSFET (Pch) for the front-drive upper arm. It is composed of a circuit, an oscillation circuit for PWM control, and the like.
Feature 3 Low current consumption reduces heat generation
・Fan, blower, air pump, and other three-phase DC brushless motors (home appliances, OA equipment, automotive electronics, etc.)
・Maximum power supply voltage 40V
・Working voltage range 9.0V to 35V
・3-phase full-wave PWM pre-driver Corresponding high-end: Pch-FET/low-side: Nch-FET
・Low-end gate clamp voltage 18V max
・Built-in PWM control circuit Set the frequency and current limiting circuit with an external capacitor Current limit=0.25V±10%
・Low-voltage protection circuit ・Forward rotation/reverse function can be switched during rotation, and the dead time can be set. The soft start function is used for the VERR terminal external capacitor. ・The ON/OFF function S/S terminal stops operation and brakes. Function, lock protection function, overheat shutdown, Hall position sensor 120 degree / 60 degree switching function
・4 types of FG output Available in 2bit selection ・BiCDMOS structure and package SSOP32 (11.0×7.6×1.25mm typ.)
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