QME48T40010-NGB0G

DC DC Converters

DC-DC converters are electronic circuits that can convert an electrical power source from its initial voltage to a desired voltage level. These converters are used in various applications ranging from automotive power devices to power supplies for computers, and more. Common DC-DC converter topologies include buck, boost, flyback, and isolated full bridge. Most of these converters are designed to convert from a higher to a lower voltage than the one provided.

The QME48T40010-NGB0G DC-DC converter is a high-efficiency, non-isolated full-bridge buck-boost converter. It is designed to operate from a nominal input voltage of 48 V and a wide input voltage range of 4.5 – 64 V. The QME48T40010-NGB0G converter supports multiple output voltages and currents. It is highly efficient and is capable of delivering up to 400 Watts of output power with an efficiency of up to 97%.

The common application of the QME48T40010-NGB0G converter is to provide DC power for computers and data centers. It is also suitable for a variety of other applications including industrial automation, automotive, and consumer electronics. It is suitable for high-power density and high-load applications.

Working Principle

The QME48T40010-NGB0G DC-DC converter operates using the buck-boost topology. This converter takes advantage of the large input voltage range and the high output power to create a voltage conversion strategy that is both energy efficient and reliable. It employs an internal control loop to regulate the output voltage and current, which allows it to deliver a stable output voltage regardless of the input or load conditions.

The QME48T40010-NGB0G buck-boost converter uses two N-channel MOSFETs, an inductor and a capacitor to regulate the input current. The input voltage is connected to an input voltage rail through the two MOSFETs and the output voltage is connected to an output voltage rail with the capacitor and inductor in series with them. The output voltage will be determined by the ratio of the two resistors connected to ground.

To convert the voltage, the voltage on the inductor is increased or decreased with pulses of current. This creates a reversal of the direction of current flow, allowing the inductor to store and release energy as a voltage conversion strategy. This converter also utilizes a high-frequency pulse-width modulation (PWM) to vary the duty cycle of the MOSFETs in order to control the output voltage.

The QME48T40010-NGB0G converter also features output current and thermal protection, input under-voltage lockout and independent soft-start circuits. It also features a low-stress operation with a low output voltage ripple. The converter is rated to operate at temperatures from -40°C to +85°C, making it suitable for a wide range of applications.