IR3538AMSM01TRP

Series:	*
Part Status:	Obsolete

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IR3538AMSM01TRP application field and working principle

IR3538AMSM01TRP is a current mode synchronous buck switching controller designed for low voltage, high current, high efficiency power conversion applications. This device provides maximum flexibility and design simplicity with a wide input voltage range and ultra-low quiescent current. It also has a built-in synchronous rectifier driver and internal current limiting, both of which save cost and size. IR3538AMSM01TRP is a PMIC device, categorized under Voltage Regulators -> DC-DC Switching Controllers.

Overview of IR3538AMSM01TRP

IR3538AMSM01TRP is a highly integrated synchronous buck switching controller with differential output voltage sensing. It includes all the features needed for a simple, compact, cost-effective boost converter design. It also has an integrated, low-side and high-side MOSFET driver for switching synchronous rectifiers. This device is ideal for supplying high current output from a 5V or 12V input supply, by buck-converting the input voltage to the desired output voltage.

Application Fields of IR3538AMSM01TRP

IR3538AMSM01TRP is ideal for many high current, cost-sensitive applications that require high efficiency and minimal external components. Typical applications involve powering core logic processors, memory and other system logic from a 5V or 12V source. It is also excellent for powering USB Type-C port, supplying power for Laptop, Mobile device and server up to 3A@20V.IR3538AMSM01TRP is suited for recharging batteries and powering of vehicles, especially in applications like hybrid and electric car infotainment systems, safety systems and active/passive safety systems, as it can maintain high power conversion efficiency up to 96%.

Features of IR3538AMSM01TRP

IR3538AMSM01TRP offers the following features: • Integrated high-side and low-side MOSFET drivers • Ultra-low standby current• Soft-start time programmable up to 200ms• Differential voltage sensing• Input voltage up to 80V • Fault protection for VIN undervoltage, overcurrent and over temperature• Up to 10A output current• Frequency dithering for improved EMI performance

Pinout of IR3538AMSM01TRP

The pinout of the IR3538AMSM01TRP is as follows:

Working Principle of IR3538AMSM01TRP

The working principle of the IR3538AMSM01TRP is simple and easy to understand. It uses current mode control and synchronous Rectified Buck converter topology to achieve high efficiency power conversion.When input voltage is applied to the device, the internal MOSFET driver turns on both the low-side and high-side MOSFET at the same time. This in turn brings the power stage into operation, and allows the power to be transferred from input to the output. The input current is sensed using the current sense resistor and the voltage at the output is sensed using the voltage sense resistor. Both these feedbacks are used to regulate the output voltage and current and ensure that the output is maintained at the design set point.The device has a built-in fault protection feature which monitors the input voltage, output voltage and current, in order to protect the system from any abnormalities.

Conclusion

IR3538AMSM01TRP is an integrated synchronous buck switching controller with low on-resistance internal MOSFET gate drivers. It has a wide input voltage range and ultra-low quiescent current. It is suitable for powering core logic processors, memory and other system logic from a 5V or 12V source, or powering USB Type-C port, and also suitable for use in vehicles. With its easy to implement design and low component count, it is an ideal choice for high current applications.

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