The IR38165 is a synchronous buck regulator from International Rectifier (now Infineon Technologies). It's designed for high-performance, point-of-load applications requiring high efficiency and power density. This device integrates control circuitry, gate drivers, and MOSFETs into a compact package, simplifying design and reducing the overall solution size.

Applications:

• Servers: Powering core voltages and I/O rails in server systems.
• Networking Equipment: Supplying power to ASICs, FPGAs, and memory in routers, switches, and other networking devices.
• Data Storage: Providing efficient power conversion for storage devices such as SSDs and HDDs.
• Industrial Equipment: Use in industrial control systems, automation equipment, and other industrial applications needing regulated power.
• Telecommunications Equipment: Employed in telecom infrastructure for powering various electronic components.

Features:

• Integrated MOSFETs: Reduces component count and simplifies layout.
• High Efficiency: Optimizes power conversion efficiency, minimizing heat dissipation.
• Programmable Switching Frequency: Allows for flexibility in optimizing efficiency and transient response.
• Overcurrent Protection (OCP): Protects the regulator and the load from excessive current draw.
• Overtemperature Protection (OTP): Shuts down the regulator in case of overheating, preventing damage.
• Input Undervoltage Lockout (UVLO): Prevents operation at low input voltages, ensuring stable operation.
• Power Good Output: Indicates whether the output voltage is within the specified range.
• Enable Input: Allows for remote on/off control of the regulator.

Benefits:

• Reduced Board Space: Integrated design minimizes the required board area.
• Simplified Design: Fewer external components simplifies the design process.
• Improved Reliability: Protection features enhance the reliability of the system.
• High Performance: Efficient power conversion ensures stable and accurate voltage regulation.
• Lower System Cost: Integration and simplified design can contribute to lower overall system cost.

Additional Details:

The IR38165 typically operates with an input voltage range of 4.5V to 21V and can deliver output currents up to 15A. It uses a synchronous buck topology, employing two MOSFETs to achieve high efficiency. The switching frequency is typically adjustable from 200kHz to 1.6MHz, offering flexibility in optimizing performance for specific applications. The device is available in a compact PQFN package, suitable for surface-mount assembly. The internal compensation network further simplifies design and reduces the need for external components. Accurate output voltage regulation is achieved through voltage mode control.