VE-B44-MW-S

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

DC-DC converters are electric power source devices used to convert a direct current (DC) input to a different DC output voltage either through an AC or DC intermediary. DC-DC converters provide a regulated DC output voltage that can vary from an input voltage of around 6V up to hundreds of volts. DC-DC converters are generally divided into two types based on the intermediary used – alternating current (AC) or direct current (DC) – and offer excellent electrical efficiency, cost, and weight characteristics.

The VE-B44-MW-S is a DC-DC converter designed to convert a DC input of 4.5V to 10V to a DC output of 3.3V to 6V. It is a low quiescent current, step-down DC-DC regulator that provides a regulated output current up to 800mA. Its high switching frequency and low noise operation ensures it is suitable for applications of power sensitive devices that require low output ripple voltage and low EMI noise. The VE-B44-MW-S is most often used in applications such as automotive systems, consumer products, industrial sensors, and other electronic devices requiring a step-down voltage conversion.

The working principle of VE-B44-MW-S is based on the buck-boost or buck-boost topology, with a PFM (Pulse Frequency Modulation) control circuit to control the output voltage. Buck topology uses an N-channel MOSFET that operates as a switch between the input and the output, while the boost topology uses an N-channel MOSFET between the output and the ground to lower the voltage output. The combined operation of the MOSFETs regulates the output voltage as input voltage changes. The PFM controller controls the switching frequency of the MOSFETs based on the load, thus regulating the output voltage to a desired level. The output voltage regulation is accomplished by varying the duty cycle of the ON-time of the MOSFETs so the voltage drop across the MOSFETs is constant.

In order to provide good efficiency and low voltage drop across the MOSFETs, the VE-B44-MW-S uses a Low Quiescent Current (LQC) structure. The LQC topology operates with an ON-time of 1/3 of the total switching period, keeping the output voltage in steady state and reducing the power loss due to the conduction loss of the MOSFET. In addition, the LQC design minimizes the output voltage ripple, resulting in an increased output voltage accuracy compared to traditional buck-boost converters.

The VE-B44-MW-S is housed in a small SOT-23 package and is easy to use. It has excellent electrical performance characteristics, making it suitable for applications that require low output ripple voltage and low EMI noise. It is ideal for use in automotive systems, consumer products, industrial sensors, and other electronic devices requiring a step-down voltage conversion.

The specific data is subject to PDF, and the above content is for reference