V72B8E150BS

DC-DC converters are devices that convert a direct current (DC) electrical charge from one voltage potential to another. They are an essential component in the design of modern electronics, allowing the delivery of power in a consistent and reliable manner regardless of the location or environment. The V72B8E150BS is a monolithic step-down 20-kHz DC-DC converter module designed for use in aviation and space applications.

As a monolithic step-down converter, the V72B8E150BS is able to convert a higher DC voltage source into a lower DC voltage output. This is achieved by synthesizing the internal switch and control electronics to provide a regulated output power. The V72B8E150BS is rated to convert at a maximum voltage input of 48V and a fixed output voltage of 5V. The module can also provide an adjustable output voltage via external resistor divider.

The V72B8E150BS is designed to operate in extreme environmental conditions, with a wide temperature range from -40°C to +150°C and a high installed altitude of up to 45,000 feet. The module is fitted with an over-voltage sense circuit for protection and has an integrated EMI filter to reduce conducted and radiated noise.

The working principle of the V72B8E150BS is based on a buck-converter topology. In a buck-converter, an internal switch is used to control the voltage and current output. A capacitor stores the incoming energy prior to the switch and the switch is toggled on and off at a constant frequency to lower the output voltage. The duty cycle of the switch is controlled by a feedback circuit, which adjusts the voltage level to a reference voltage provided by a series of resistors and capacitors.

The output voltage is divided by the feedback circuit into two voltage levels - the reference or control voltage and the output voltage, which are then compared and an error signal is generated if there is a difference between the two levels. This error signal is used to regulate the switch duty cycle, thereby controlling the output voltage of the V72B8E150BS.

Overall, the V72B8E150BS is an ideal choice for a wide variety of extreme environmental applications, with a wide temperature range, an installed altitude of up to 45,000 feet, and an adjustable output voltage. The monolithic step-down DC-DC converter module has been designed to use a buck-converter topology to provide a regulated output power with an integrated EMI filter to reduce conducted and radiated noise.