UCC3626NG4

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The UCC3626NG4 is a high-performance, low-power advanced quad half-bridge motor pre-driver IC. It is a device designed for motor control applications that require high current drive capability and highly accurate current regulation. The UCC3626NG4 is ideal for applications such as fans and motors in home appliances, HVAC, industrial and automotive applications.

The UCC3626NG4 control block consists of three main components: Internal voltage reference, over temperature detector, and current sense resistor. The internal voltage reference is used to maintain a steady voltage on the primary side of the driver. The over temperature detector is used to monitor the temperature of the driver and protect it from overheating. The current sense resistor is used to monitor the current draw of the motor being driven by the driver.

The UCC3626NG4 is designed to provide precise current limit and output control with minimal power dissipation. This is achieved by using a current regulator to continually monitor the current flowing through the motor, adjusting the output voltage to maintain the desired current level. The current regulator can be programmed to any desired current limit and output voltage. Additionally, a slew rate control feature allows for further refinement of the motor’s full-load performance. This feature helps to minimize transients and reduce motor noise.

To optimize power dissipation, the UCC3626NG4 utilizes a low-side gate driver that can be operated in either pulse width modulation or linear mode. In PWM mode, the duty cycle of the low-side gate driver is controlled by the current sense resistor and monitored signals from the over temperature detector. In linear mode, the duty cycle is adjusted by an external input such as an ADC or potentiometer. This allows for precise control over the power dissipation of the driver.

The UCC3626NG4 also provides a number of integrated safety features to ensure the safety of sensitive loads. Protective features such as short circuit protection, thermal shutdown, and under voltage lockout can be programmed to activate at user-defined thresholds. This helps to ensure that the driver is operated within safe limits at all times.

The UCC3626NG4 allows for highly accurate current regulation of motor applications by providing precise output control and minimal power dissipation. This makes it an ideal choice for a wide range of motor control applications, such as HVAC, industrial, and automotive. Its integrated safety features and flexible configuration options further enhance its usability in these applications.

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