IR3563BMGB02TRP

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The IR3563BMGB02TRP is a high performance DC-DC synchronous buck switching regulator controller IC. It is a part of a two-chip solution, allowing the designer to utilize an optimal combination of offerings from both the controller IC and the power MOSFET vendors. This device offers current mode digital compensation, integrated gate driver and is designed for implementing a synchronous buck regulator solution.

Features of IR3563BMGB02TRP

• Input voltage range of 4.5V to 19V
• Maximum output current of up to 6A
• Fully integrated gate driver with pull-down outputs
• Internal gate driver with 2A peak current
• Internal 1.2A gate driver current source
• 2A low side gate driver
• Integrated undervoltage lockout
• Programmable switching frequency up to 500kHz
• Integrated overcurrent protection

Application Field

The IR3563BMGB02TRP is an excellent choice for a range of DC-DC applications such as point of load converters, communications and storage systems, motor control power supplies, and other applications requiring a high efficiency and low profile synchronous buck regulator solution.

The device is well-suited for point of load applications due to its exceptional accuracy and quick settling times, and is also well suited for higher power applications up to 6A. It can operate with or without an external current sense resistor, depending on the application needs.

The device also offers flexibility in the cell design phase allowing for reduced cell size and footprint by allowing for the use of an integrated gate driver, external MOSFETs, and internal power devices.

Working Principle

The IR3563BMGB02TRP implements a synchronous switching regulator design with a pulse width modulation (PWM) controller. In a synchronous switching regulator, the device regulates the output voltage by modulating the power MOSFET switches. The power MOSFET switches are driven by the integrated gate driver in the device.

The IR3563BMGB02TRP features a current mode control architecture, where the feedback loop detects the buck controller’s output current and compares it to a reference output voltage. When the output current is above the reference voltage, the output voltage is reduced until the current returns to the reference value. This allows for better regulation and stability of the output voltage. Additionally, the device provides current-mode overcurrent protection.

The IR3563BMGB02TRP also integrates a high-efficiency soft-start circuit. This is used to reduce the inrush current during startup and to ramp up the output voltage to its regulated level. The device also features integrated energy-saving circuity which can also be used to reduce output noise.

Conclusion

The IR3563BMGB02TRP DC-DC synchronous buck switching regulator controller IC is a high performance, low profile device offering current-mode digital compensation, integrated gate driver and protection integrated circuits. It is an excellent choice for a range of DC-DC converters and applications requiring high efficiency, such as point of load converters, communication and storage systems, motor control power supplies, and other applications.

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