VE-B3V-MX-S

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DC-DC converters are a type of power supply that converts a direct current (DC) from one voltage level to another. They are commonly used in a variety of applications and come in a wide variety of designs, sizes, and shapes. Some of the most common DC-DC converters are the VE-B3V-MX-S converters.

The VE-B3V-MX-S DC converter is a step-down, monolithic integrated circuit that converts an input voltage of up to 40 VDC into an output voltage of 3.3 VDC with up to 3A continuous output current. The device features 38 V maximum input voltage, 22 kHz switching frequency, 1300 V/µs transconductance, 2 MOhm maximum on-resistance per switch, and a wide input voltage range from 3.0 V to 38 V.

The VE-B3V-MX-S offers the ability to operate over a wide input voltage range, allowing the converter to maintain a constant output voltage despite variations in input voltage. It also has an internal soft start, which ensures low inrush current during start-up and allows for smooth operation of connected loads. The device has an output voltage range of 0.6V to 3.3V and features thermal shutdown and overvoltage protection.

The VE-B3V-MX-S is an ideal DC-DC converter solution for space-constrained applications, such as medical systems, automotive electronics, industrial systems, and consumer electronics. Its onboard shunt regulator provides a means to monitor the output voltage, and its built-in protections make it reliable and safe for use in a variety of operating environments. The device is also RoHS compliant and can be used in lead-free soldering processes.

The working principle of the VE-B3V-MX-S is based on switch-mode power conversion, which involves the input voltage being stepped down at a predetermined frequency via an inductor-capacitor (LC) network. The frequency of the converter is determined by the frequency of the oscillator, which is programmable via external control. The output voltage is controlled by varying the duty-cycle of the switches.

The device utilizes a constant-on-time (COT) topology to accurately regulate the output voltage. The COT topology is different from the conventional constant-frequency methodology as it does not require an external compensation capacitor and instead relies on a simple control loop to ensure accurate output voltage regulation. This approach results in a highly reliable and efficient converter.

The VE-B3V-MX-S is a reliable, low-cost solution for applications requiring tight output voltage regulation over wide input voltage ranges. Its simple, cost-effective design makes it an ideal choice for many applications including automotive, consumer, and industrial design.

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