MP6506GQ-Z

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The PMICs (Power Management ICs) provide a power supply design to control the power-on sequence and power-off sequence of the system, to switch from one power source to another power source, and to adjust the output voltage and current of each region in the system. Under specific circumstances, PMICs such as the MP6506GQ-Z can also provide motor power control functions as they provide a current drive motor control system. This article will discuss the application field and working principle of the MP6506GQ-Z.

Application Fields

The MP6506GQ-Z is a multi-phase motor driver PMIC. The chip provides six-phase driver control and supports wide input voltage range of 8V to 85V. It offers various protections such as over temperature protection, over current protection, and under voltage protection as well as failsafe functions such as pre-charge and over shoot protection. The driver of the MP6506GQ-Z supports MOSFETs on the high-side and N-channel driver on the low-side, allowing for optimal usage in motor drives.

The chip is ideal for Brushless DC motor (BLDC) drives, fan motor drives and spindle motor drives, where it will provide high efficiency and fast transient response. The chip is also suitable to drive linear motors and solenoid motors. It can be used in variety of professional and consumer applications including home appliances, surveillance systems and personal care devices.

Working Principles

The multi-phase motor driver of the MP6506GQ-Z follows a Half Module Algorithm (HMA) for the motor driving function, which provides high efficiency for BLDC applications. The HMA provides protection for the driving part by using anti-shoot-through circuit, low side and high side draining delays and soft start controlled current limits to avoid inrush current.

The chip supports PWM and Current Mode control mode, which are determined by the PMI_Ctrl[12] to [15] bits. In the PWM control mode, the motor speed is controlled by an external PWM controller. The motor speed is determined by the PWM frequency; the higher the frequency, the higher the motor speed. In current mode control, the motor speed is determined by the current that drives the motor; the higher the current, the higher the motor speed.

The chip is equipped with a built-in Smart Gate Drive that adjusts the gate resistors according to the PWM input frequency, as well as Auto-Phase adjust for an effortless implementation. The chip also features two Serial Interfaces for accurate current measurements. The chip also supports flexible thermal protection in order to protect the chip from overheating and to provide an optimal performance.

In conclusion, the MP6506GQ-Z is an ideal PMIC ULP Motor Driver in the market. It is ideal for a range of professional and consumer applications and provides an efficient and reliable power supply design. It can also provide optimal motor control with features such as the HMA, PWM and Current Mode control system.

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