IRDC3629A

Series:	--
Part Status:	Obsolete
Main Purpose:	DC/DC, Step Down
Outputs and Type:	1, Non-Isolated
Voltage - Output:	1.8V
Current - Output:	25A
Voltage - Input:	5 V ~ 12 V
Regulator Topology:	Buck
Frequency - Switching:	300kHz
Board Type:	Fully Populated
Supplied Contents:	Board(s)
Utilized IC / Part:	IR3629A

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The IRDC3629A is an integrated step-down converter that provides a constant current or constant voltage output from a 9-60V DC power source. It is designed for offline applications such as LED lighting, portable and industrial electronics, and automotive systems. The IRDC3629A is one of the most versatile switching power supplies in the portfolio, providing flexibility in system topology, motor control efficiency, safe operation and protection against overloads.The IRDC3629A specification includes a maximum input voltage of 60V. It employs an active PFC controller with high efficiency (> 97%). It also features a unique design that uses either current mode control or voltage mode control for stable operation. It supports both single-ended inductors and dual-ended inductors for a single device or multi-device solution. The IRDC3629A can be used with either an internal or external MOSFET for switching applications.The IRDC3629A application field includes LED lighting, industrial electronics and automotive systems. It offers a wide range of current and voltage output configurations ranging from 0.5A-4A and 12V-60V. It can also control the speed of DC motors from 40V to 70V. TheIRDC3629A can be used for a variety of applications such as point of load (POL) converters, computer accessories, automotive applications (e.g. electric vehicle auxiliary power, engine and door systems), and solar power.The IRDC3629A is a cost-effective, flexible and highly efficient non-isolated step-down DC/DC converter. It features high current and voltage capability, low EMI, fast transient response, and stable output voltage. The IRDC3629A employs constant on-time control for improved light load efficiency. It also features built-in protection against over-voltage, over-temperature, and short circuit conditions.The IRDC3629A working principle is based on a DC/DC buck converter. The input voltage is reduced to a lower regulated output voltage by using an inductor to store energy. An external MOSFET switch is used to regulate the average current flow in the inductor. When the switch (MOSFET) is turned on, the current in the inductor increases, and the voltage across the inductor decreases. When the switch is turned off, the current in the inductor decreases and the voltage across the inductor increases.The IRDC3629A features built-in current and voltage loop compensation for stability and accuracy. It also features an adjustable shunt regulator for accurate voltage regulation and fast load response. The IRDC3629A is protected against short circuit conditions, over-voltage, and over-current situations. The protection circuit is programmable and can be used to limit peak current or provide protection against over-temperature and dynamic fault conditions.The IRDC3629A is an impressive and versatile offline SMPS suitable for a variety of applications, such as LED lighting, industrial electronics, and automotive systems. It features high current and voltage capability, low EMI, fast transient response, and stable output voltage. It also features programmable protection and precise voltage regulation, making it an ideal choice for reliable and efficient operation.

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