V375C36C150BN3

DC DC converters are widely used in electronic systems for power conversion and voltage isolation, and V375C36C150BN3 is a specific type. This paper will explain the application field and working principle of V375C36C150BN3 specifically.

V375C36C150BN3 is a kind of high frequency DC to DC converter, suggested for telecom system, automated test equipment, broadcast equipment, and other power systems applications with isolated power supplies or distributed power systems. It offers a high power density, high efficiency and low profile power solution.

It has high voltage input range, the operating input voltage between 330VAC and 400VAC or 180VDC to 600VDC. The total outputs are up to 800W with natural convection cooling. The output voltage can be adjusted from 18VDC to 36VDC. The typical no-load power consumption at 360VAC input is less than 85mW.

V375C36C150BN3 completely consists of a magnetically coupled transformer and occasionally diode bridge rectifier, following the classic isolated DC DC buck converter topology. A coil on the primary and secondary sides of the transformer provide a magnetic coupling, and there is no physical electrical connection between the two sides. The driving principle is source current, controlled by pulse width modulation (PWM). A stable signal is inputted in the PWM pin of the power conversion chip, and the duty cycle of this signal directly changes the output voltage.

The PWM signal, generated by a hysteresis comparator, is compared with reference voltage and then output to the PFC controller. The PFC controller will detect the presence of source voltage, control with the PWM signal, and adjust the duty cycle and peak current of the output voltage to reach the target voltage. This process is repeated to provide continuous regulation.

In the following brief application flow, V375C361C50BN3 can obtain a respond cycle of few microseconds at most, with DC ripple of below 200mVp-p and voltage accuracy ±0.5%. Of course, a transistor feedback output loop senses and controls output voltage, and the output voltage can be adjusted by adjusting resistor R11 in the feedback loop or no negligible temperature coefficients.

V375C36C150BN3 is a very popular choice for a range of applications. Understanding its application field and working principle can help to select the right kind of DC DC converters for specific application.