LM2591HVT-5.0/NOPB

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The LM2591HVT-5.0/NOPB is a high voltage DC/DC converter integrated circuit (IC) from the voltage regulator family of Texas Instruments. It is designed to deliver up to 5A of output current, and can be used in a wide range of applications, with options for switching frequency, output current limit, and compensation setup.

The LM2591HVT-5.0/NOPB is part of the DC/DC switching regulators product family from Texas Instruments. This product family consists of integrated high-voltage, high-efficiency switching regulator ICs that offer constant current, constant voltage, and constant power output for a variety of applications. The device is housed in a special VQFN package that provides maximum output current and thermal performance, and also contains a fixed 5V internal low-drop voltage regulator ideal for powering logic circuits, microcontrollers and other digital components.

The LM2591HVT-5.0/NOPB is used in a wide range of applications that require a high voltage DC/DC converter, such as in solar energy harvesting systems, medical equipment, automotive systems, industrial motor controls, and Defibrillators. It features an adjustable frequency range of 110 kHz to 1.3 MHz, allowing for efficient use of space, higher efficiency, and reduced magnetics and thermal losses.

The LM2591HVT-5.0/NOPB integrated circuit has several important features and protection modes, such as adjustable current limit, thermal shutdown, input under-voltage protection, and overload protection. It also provides a low-dropout voltage regulation option, which ensures that the output voltage is maintained within a regulated range for an extended input voltage range. The device also includes a programmable soft-start option, which allows the output voltage to be controlled accurately during startup.

The working principle of the LM2591HVT-5.0/NOPB is based on the switching regulator concept. The device is an advanced design that improves the efficiency of power delivery to the load by utilizing synchronous rectification. In this configuration, two transistors, one for the high-side and one for the low-side, are used to switch the current flowing in the winding of the inductor. The chip also features a current-mode control architecture, which allows the device to continuously sense the output current and adjust the switching duty cycle to maintain the required output voltage.

In summary, the LM2591HVT-5.0/NOPB is a high voltage DC/DC converter integrated circuit from the voltage regulator family of Texas Instruments. It is used in a wide range of applications that require a high voltage DC/DC converter and features an adjustable frequency range of 110 kHz to 1.3 MHz, adjustable current limit, thermal shutdown, input under-voltage protection, and overload protection. The working principle is based on the switching regulator concept and utilizes a current-mode control architecture.

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