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DC DC Converters

DC/DC converters are devices used to convert a DC voltage from one level to another, typically either increasing or decreasing the voltage. These converters are widely used in the telecommunications, computer, automotive, and industrial markets to power a variety of electronic equipment. One type of DC/DC converter is the 78SR114HC, an isolated polarity buck DC/DC converter module with high efficiency, low power losses, and a wide operating temperature range.

Application Field of 78SR114HC

78SR114HC DC/DC converters are often used in applications where an input voltage of up to 60 Volts needs to be stepped down or regulated such as high voltage battery operated devices, automotive or medical applications. Additionally, applications such as mobile phones, computers, digital signal processors, and industrial control systems all require reliable, efficient, and low power loss conversion of DC power. The 78SR114HC\'s wide input range coupled with ultra-low power losses makes this module suitable for practically all of these applications. Its small size and high efficiency makes it an ideal choice for applications where a compact, economical power supply is needed.

Working Principle of 78SR114HC

The 78SR114HC is an isolated, DC/DC converter module that operates on a buck (step down) voltage conversion principle. The module has an input voltage range of 3.3V to 60V and a minimum output voltage of 2.5V. Its maximum output current capability is 2.0A and its switching frequency is 200KHz. The module is designed to provide a high level of isolation between input and output using an internal transformer and circuits. This provides protection from high voltage surges and helps to maintain a stable output voltage. The built-in over-load protection circuit prevents any over-current from damaging any of the components.

The 78SR114HC uses a pulse-width modulation (PWM) method for voltage conversion. This method uses precise timing of the switches to transfer power from the input to the output in precise amounts. The PWM converter is controlled by an on-board feedback loop. This ensures reliable and stable output voltage over a wide range of input voltages and load currents. The module also utilizes synchronous rectification, which improves its efficiency by reducing discontinuous conduction losses. Synchronous rectification reduces the amount of current that flows through the power switches making them cooler and more efficient.

The 78SR114HC DC/DC converter module is a reliable and efficient solution for powering a wide range of electronic and electrical applications. With its wide input voltage range, low power losses, high efficiency, and wide operating temperature range, this module is ideal for many different applications. The built-in protection circuits provide additional safety and reliability, and its small size makes it an ideal choice for space-constrained designs.

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