SLA7075MPR

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Power Management IC (PMIC) is an important component in modern electronic systems. It supplies power to the components of the system, controls the voltage level, and distributes the current among the different components. In addition, PMICs are also used to provide power to motors and control their operation. A good example of a PMIC suitable for these applications is the SLA7075MPR. This article will discuss the application field and working principle of the SLA7075MPR.

The SLA7075MPR is a current-mode motor controller designed to drive 3-phase brush-type motors. It consists of a MOSFET bridge driver, overvoltage protection circuitry, and a PWM driver. It can operate at up to 15A output current, and its operating temperature range is -40°C to 85°C. It has a wide adjustable range of currents, so it is suitable for multiple motor types. The SLA7075MPR has a wide range of application fields, such as motor control and robotics. It is also suitable for controlling the speed of fans, pumps and other general purpose 3-phase brush-type motors.

To understand the working principle of the SLA7075MPR, it is important to first understand how a brush-type motor works. The rotating part of the motor is called the rotor and it is connected to three separate coils or windings. The windings are energised by a three-phase power source and the resulting magnetic field causes the rotor to rotate. The speed of rotation is dependant on how much power is supplied to the windings, or in other words, the frequency and amplitude of the three-phase current. The SLA7075MPR controls the supply of power to these three windings by means of Pulse Width Modulation (PWM), in order to reduce the output current.

The SLA7075MPR has three inputs (one for each phase) and one output. The inputs receive the three-phase current and the output receives the PWM signal. This PWM signal is generated using a current-mode approach. In this approach, the current levels of each phase are compared to a reference current. If the current of one phase is higher than the reference current, the corresponding output is set to zero, thus reducing the power to that phase and effectively limiting the output current. If the current of one phase is less than the reference current, the corresponding output is set to maximum, thus increasing the power to that phase and increasing the output current.

The SLA7075MPR is a very versatile motor controller that can be used in a variety of motor control applications. It has a wide range of adjustable current levels, making it suitable for controlling a wide variety of motors. It also has an overvoltage protection circuit, making it suitable for harsh environments. In addition, it uses a current-mode approach, which provides accurate and reliable control of the output current.

In summary, the SLA7075MPR is a current-mode motor controller with 3-phase input, suitable for controlling brush-type motors. It has a wide adjustable range and overvoltage protection, making it suitable for a variety of motor control applications. It uses a current-mode approach to control the output current, making it an ideal choice for reliable and accurate motor control.

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