LTC7815HUHF#PBF

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LTC7815HUHF#PBF Application Field and Working Principle

Introduction: LTC7815HUHF#PBF is a synchronous buck controller implemented in a small QFN-20 package, with peak efficiency and transient response optimization, it provides a very powerful switch mode converter solution. It can be utilized in communications, portable devices, computing, industrial and medical applications.

PMIC - Voltage Regulators - DC DC Switching Controllers: LTC7815HUHF#PBF belongs to power management integrated circuits -- voltage regulators -- DC DC switching controllers. It’s used for high current, low voltage synchronous buck voltage regulator designs which need low power loss, peak efficiency, and fast transient response.

Features:

• Pad layout optimized for thermal performance
• Various input voltage options
• Integrated output voltage reference
• Integrated MOSFET gate drivers
• Output voltage adjustable
• Pulse-to-pulse current limit
• Programmable dual-level soft-start
• Integrated overvoltage and undervoltage protection

Working Principle: The LTC7815HUHF#PBF uses a synchronous buck architecture to efficiently step down voltage. It has an input voltage range of 6~30V and can generate an output voltage of 0.825V to 17.275V. The output power adapter has a maximum load current of 6A. The LTC7815HUHF#PBF provides programmable dual-level soft-start, overvoltage and undervoltage protection, and pulse-to-pulse current limit. The device’s main function is to control the power switches of the power converter and ensure the constant output voltage.

The main function of the module: The power converter module is composed of an inductor, a capacitor, and two high-power switches. The power switch is an MOSFET switch, which is controlled respectively by the high-side and low-side gate control signals of the controller. The LTC7815HUHF#PBF outputs the switch control signals after voltage feedback, so as to maintain the balance between the output voltage and the voltage reference. After the switch is turned on and off, the inductor is charged and discharged, and the capacitor and load are coupled, forming the AC/DC power conversion circuit. Finally, the output voltage and output current of the power converter are the average output voltage of the two switches.

Advantages: LTC7815HUHF#PBF has a peak efficiency of 98% and a fast transient response. Its main function is to control the power switches of the power converter and ensure the constant output voltage. It is suitable for high current, low voltage synchronous buck voltage regulator designs which need low power loss, peak efficiency, and fast transient response. The device is well-suited for use in communications, portable devices, computing, industrial and medical applications.

Conclusion: LTC7815HUHF#PBF is a synchronous buck controller that is suitable for high current, low voltage synchronous buck voltage regulator designs which need low power loss, peak efficiency, and fast transient response. It provides programmable dual-level soft-start, overvoltage and undervoltage protection, and pulse-to-pulse current limit, making it well-suited for use in communications, portable devices, computing, industrial and medical applications.

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