ON Semiconductor SG3525ADWR2: Pulse Width Modulator Controller

The SG3525ADWR2 is a versatile pulse width modulator (PWM) controller integrated circuit designed and manufactured by ON Semiconductor, a leader in energy-efficient innovations. This controller is ideal for a wide range of power supply and motor control applications, offering precise electrical control with a variety of features that enhance the performance and reliability of end products.

Key Features

• Adjustable Output: The device provides an adjustable output from 8% to 90%, which allows for flexible control over the power delivered to the load.
• Wide Operating Range: It operates at a supply voltage range of 8V to 35V, making it suitable for various applications, from low-power portable devices to high-power industrial equipment.
• Dual Output: The SG3525ADWR2 features dual outputs that are out of phase with each other, reducing ripple and eliminating the need for large filtering components.
• Frequency Oscillation: It comes with an oscillator whose frequency can be programmed up to 400 kHz. This high-frequency capability allows for smaller passive components, reducing size and cost.
• Soft-Start Function: The built-in soft-start function gradually increases the duty cycle, which helps to reduce stress on the power supply during startup.
• Shutdown Capability: The device includes a shutdown pin that can be used to turn off the outputs, providing a means for power-saving and safety.
• Under-Voltage Lockout: An under-voltage lockout feature ensures that the controller operates only when the supply voltage is within an acceptable range, protecting the circuit from low-voltage conditions.

Applications

The SG3525ADWR2 is suitable for a variety of applications, including:

• DC-to-DC converters
• AC-to-DC switched-mode power supplies
• Power inverters
• Battery chargers
• Motor control systems

With its comprehensive feature set and robust design, the SG3525ADWR2 from ON Semiconductor is a reliable choice for designers looking to implement PWM control in their power management and motor control systems. Its flexibility and performance make it a go-to component for engineers seeking to optimize their designs for efficiency and cost-effectiveness.