Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LTC1517ES5-5#TRPBF application field and working principle

The LTC1517ES5-5#TRPBF is a Dual Buck Switching DC/DC Regulator, which is ideal for providing power to high current semiconductor devices such as CPUs and FPGAs. It can be used with a wide input range, up to 18V and generating two independently adjustable outputs of 5V and 3V with a slew rate of up to 12A/µsec.

The regulator features a wide die operating temperature range of up to 165°C. In addition, it includes an active voltage positioning for improving the dynamic voltage regulation, which provides better load duty cycle performance. Its current sensing circuit utilizes a resistor in the output path for creating the feedback for transient protection.

The LTC1517ES5-5#TRPBF has a quiescent current of 75µA and an output current up to 13A. It is optimised to provide low dropout and low output voltage ripple while continuously delivering up to 13A of output current. Its dual channel current sensing ensures accurate current limitation and fault protection.

Application Field

The LTC1517ES5-5#TRPBF can be used in a variety of high power applications, such as CPU, FPGA and ASIC power supplies, storage drives and motor controls. Its high switching frequency of up to 3.3MHz makes it ideal for these power supplies, as it allows for small size solutions. Its wide operating temperature range makes it suitable for applications in intense temperatures, such as industrial and power supply electronics.

It can also be used in DC/DC converter applications and LED lighting applications, as it can be set up to output two different and independently adjustable outputs. Its accurate current limiting, high efficiency, and fast loading performance make it ideal for these types of applications.

Working Principle

The LTC1517ES5-5#TRPBF works by using a switching regulator topology. This topology works by taking an unregulated DC input voltage and converting it into a regulated DC voltage. In the case of the LTC1517ES5-5#TRPBF, this conversion is performed by a pair of 1.8V NPN transistors, an internal power MOSFET, and an internal voltage reference. As the input voltage level varies, the internal transistors will open and close in order to maintain the desired output voltage.

The transistors in the regulator are controlled by comparing the output voltage to a preset reference voltage, known as the error amplifier. If the output voltage is too low, the transistors will open, allowing more current to flow. Once the output voltage reaches the desired value, the transistor will close, reducing the current. This process is repeated continually in order to maintain a constant output voltage.

The LTC1517ES5-5#TRPBF also has an internal power MOSFET. This MOSFET will function similar to the transistors, but instead of opening and closing, it will alternately transfer current from the input to the output at high frequency. The high speed switching of the MOSFET will reduce the size of the converter, and also reduce the amount of current and heat generated.

In addition, the LTC1517ES5-5#TRPBF includes an active voltage positioning system. This system will detect fluctuations in the output voltage and automatically adjust the load duty cycle in order to maintain the desired output voltage. This feature provides improved load duty cycle performance and helps to reduce the amount of power lost in the conversion process.

Conclusion

The LTC1517ES5-5#TRPBF DC/DC Regulator is an efficient and reliable solution for providing power to high power applications. Its high switching frequency and wide operating temperature range make it well suited for these applications. In addition, its active voltage positioning system helps to improve load duty cycle performance, making it an ideal choice for high power applications.

The specific data is subject to PDF, and the above content is for reference