The TPS40091RHDR is a versatile and efficient PWM (Pulse Width Modulation) controller from Texas Instruments, designed for non-isolated DC/DC converters. This advanced power management integrated circuit (IC) is tailored to meet the demands of a wide range of applications, from telecommunications and networking equipment to industrial systems and computing peripherals.

Key Features

• Wide Input Voltage Range: The TPS40091RHDR operates over an input voltage range of 4.5V to 28V, making it suitable for a variety of power sources and ensuring compatibility with different system architectures.
• Adjustable Switching Frequency: Users can set the switching frequency anywhere from 100 kHz to 600 kHz via an external resistor, allowing optimization for efficiency or component size depending on the application requirements.
• Synchronous Buck Controller: The device is designed to control synchronous buck power stages, which can provide higher efficiency compared to traditional non-synchronous solutions, especially at lower output voltages.
• Integrated Gate Drivers: It includes built-in gate drivers for both the high-side and low-side MOSFETs, simplifying the design and reducing external component count.
• Voltage Feed-Forward: Voltage feed-forward compensation is provided to maintain stable operation despite wide variations in input voltage, which is particularly useful in environments with fluctuating power supplies.
• Programmable Soft-Start: The TPS40091RHDR features programmable soft-start functionality to minimize inrush current during startup, enhancing system reliability.
• Protection Features: The device incorporates a range of protection features, including overvoltage, undervoltage lockout, and thermal shutdown, safeguarding the system against a variety of fault conditions.

Package and Availability

The TPS40091RHDR is offered in a 16-pin QFN package, providing a compact solution for space-constrained applications. It is part of Texas Instruments' extensive portfolio of power management solutions, known for their reliability and performance. The product is available through various distributors and directly from Texas Instruments, with options for bulk orders and sample requests to accommodate design and production needs.