GQ2540-9RG

Series:	*
Part Status:	Active

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<p>DC-DC converters are used to change a direct current (DC) voltage level, rather than just stepping current up or down like a transformer. To do this, two main types of DC converters are used; isolated and non-isolated. While isolated DC converters are primarily used in power supplies where maximum isolation from the mains is desirable, non-isolated converters are usually employed in small scale applications such as in automotive and telecommunications products. One such non-isolated DC converter is the GQ2540-9RG, a high efficiency converter designed for use in distributed power systems, such as in battery charging applications. <p>The GQ2540-9RG is a synchronous, low input voltage, non-isolated DC converter that supports an input voltage range of 6.5V to 40V. It features frequency synchronisation over a wide range, integrated soft-start and a current monitor for system protection. The converter supplies clean, well regulated output voltage signals needed for modern power applications.</p><p>The main features of the GQ2540-9RG are its high efficiency and power density, low EMI, easy synchronisation and its small package size. It is designed to ensure reliable system performance and reduces the power loss that is caused by an inefficient converter. The power conversion efficiency of the device is better than 95%. Its small size also makes it a great choice for applications where space is limited. </p><p>The GQ2540-9RG is based on a synchronous buck topology for DC-DC conversion. This means that the converter takes the input voltage, step it down to an output voltage and current while maintaining a constant frequency, with just a few external components. The duty cycle of the PWM (Pulse Width Modulation) is determined by the ratio of input and output voltages of the converter.</p><p>When the GQ2540-9RG is connected to the power source, it first checks for the input voltage and the output voltage setpoints. When the input voltage is within the specified range, the device initiates a synchronisation process, using the external clock signal connected to its SYNC pin. In this process, the device checks the input and output voltage levels and adjusts the duty cycle accordingly. Once the proper synchronisation is achieved, the device enters a stable operation mode, producing a well-regulated output voltage signal.</p><p>This device also features a built-in over current monitor, which checks the current draw from the output to determine if it is within the specified range. If the output current is too low or too high, the device will shut off the output until the current draw returns to the proper range.</p><p>The GQ2540-9RG is designed to provide reliable and cost-effective performance in a wide range of applications, such as battery charging, automotive systems and telecommunications. It is a high efficiency, cost effective and easy to use DC-DC converter solution.</p>

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