VASD1-S5-D5-DIP

DC DC Converters

A VASD1-S5-D5-DIP is an integrated DC-DC converter for local voltage transformation in the power range of 5W. It is an easy to use, cost-effective, self-contained device with excellent efficiency. It is capable of providing galvanic isolation, power factor correction, and high output accuracy. The device is particularly suitable for applications in automotive, industrial and medical systems.

Application Field

VASD1-S5-D5-DIP power input has a wide voltage range from 6V to 60V and their output voltage can be set by its internal control and feedback capacitors. It is highly suitable for DC/DC isolation applications especially in automotive, industrial and medical systems. Additionally, the limitation of current or shorten of power is designed to protect the circuit itself and its application.

Working Principle

VASD1-S5-D5-DIP devices are high-performance isolated DC/DC converters which work on the boundary conduction mode (BCM) controlled by pulse width modulation (PWM) techniques. The primary side of the device is self-oscillating, i.e., the output voltage is regulated by a built-in current-mode PWM controller. It contains two main scheming circuits: one is the quasi-resonant circuit to achieve very high efficiency. The other main scheming circuit is the auxiliary circuit that includes the compensation capacitance part and the current limiting circuit. The current limiting circuit is used to protect the device from the over-current or short-circuit situation.

The PWM controller uses high frequency (about 40-80 kHz) to switch the output voltage and regulate it according to a given output voltage. It can realize high power density, high efficiency, and a better load regulation. The working principle of VASD1-S5-D5-DIP is based on the essential non-isolated buck topology combined with advanced high-frequency converter techniques. The leak inductance works as a resonant inductor, and the output voltage of the converter is controlled by a low-frequency quasi-resonant principle.

The combination of these advanced technologies and the non-isolated buck topology enables the device to achieve high efficiency and power density, as well as a very good regulation. The internal soft start circuits can avoid the input current surge and the output voltage overshoot.

Conclusion

The VASD1-S5-D5-DIP is an ideal solution for high frequency, isolated DC/DC converters. It is highly suitable for applications in automotive, industrial and medical systems. The device is designed with excellent efficiency, high power density, and excellent load regulation characteristics. Its integrated features make it easy to use, cost-effective, and self-contained.