PT7722N

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DC DC converters are used to convert a source of direct current (DC) from one voltage level to another. PT7722N is a DC DC converter module specifically designed for applications requiring high efficiency, power density, and wide voltage range. It offers high conversion efficiency and low noise output in a variety of applications.

Features

The PT7722N is a highly efficient DC DC converter module with a power density of up to 25W/ cm3. It offers a wide voltage input range (4V to 36V) and a wide voltage output range (0.9V to 19V). The module also offers a high switching frequency (up to 1kHz) for noise reduction, as well as an adjustable soft-start and output current limit for improved system protection. The PT7722N also includes an under-voltage lock-out feature to prevent accidental startup in low-voltage environments, as well as a low-power sleep mode for improved system reliability.

Applications

The PT7722N is ideal for applications requiring high efficiency, power density, and wide voltage range. It can be used for automotive, medical, industrial and transportation applications, among others. It is used in the following applications:

• Power conditioners
• Power supplies for general electronics
• Power supplies for medical equipment
• LED drivers
• Battery chargers
• Automotive infotainment systems
• Industrial control systems
• Transportation systems

Working principle

The PT7722N module is based on a step-down (Buck) DC DC converter topology. It converts a high-voltage input (4V to 36V) into a low-voltage output (0.9V to 19V) with high conversion efficiency. The module works by controlling two power switches - an N-type FET (Field-Effect Transistor) and a P-type FET - in a fixed on-time, fixed frequency regulation mode. The FETs act as switches to control the power flow into the load, while an inductor is used to store the energy within a switching cycle. The module also includes a voltage-sensing circuit to maintain a constant output voltage, regardless of input voltage variations. Adjustable soft-start and output current limit functions can be controlled via the Enable/ Shutdown (EN/SD) input pin. The PT7722N is also capable of operating in a low-power sleep mode for improved system reliability.

Conclusion

The PT7722N is a highly efficient and flexible DC DC converter module suitable for a wide range of applications. It offers a wide voltage input and output range, as well as a high switching frequency and adjustable soft-start and output current limit functions for improved system protection. The module also includes a low-power sleep mode, as well as an under-voltage lock-out feature to ensure reliable operation in low-voltage environments. The PT7722N is ideal for automotive, medical, industrial, and other applications requiring high efficiency, power density, and wide voltage range.

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