QSB7548S12

DC DC converters are widely used in many different applications from aerospace, medical, and automotive industries to off-grid energy systems, including the QSB7548S12 DC-DC converter. This device is built using a synchronous buck topology and operates at continuous conduction mode (CCM). The continuous conduction mode in DC-DC converters enables lower output impedance, reduced voltage ripples, and high power efficiency for the system compared to pulse width modulation (PWM) techniques used in traditional buck regulators.

The QSB7548S12 has a wide input voltage range from 4.5V to 36V with adjustable output voltage ranging from 0.57V to 30V and up to 75W output power. The device also includes a 0.6uH integrated inductor to reduce external component count and a large output capacitance range of up to 3300uF. With its low operating current of 70A, the QSB7548S12 is well suited for applications with high power system requirements.

The working principle of the QSB7548S12 is based on a synchronous buck topology, which is a power conversion circuit that can rapidly converts a higher voltage input to a lower voltage output. This helps to reduce the power loss during transfer and increases the efficiency of the system. The core of the circuit is consisted of a power switch, an integrated inductor, and two capacitors.

The power switch is in charge of switching the input voltage on and off, while controlling the duty cycle of the converter. At a preset duty cycle, the transformer inside the inductor stores the energy and then releases it at a lower voltage to the output capacitor, which filters the voltage ripple. The output capacitor then provides a steady, low-ripple output voltage to the system load.

The QSB7548S12 is suitable for a variety of applications, such as in power supplies, battery-charging circuits, point of load (PoL) converters, and motor drives as well as industrial and automotive systems. It offers a robust feature set, wide dynamic range, high accuracy, and high power efficiency, meeting the most demanding requirements. The QSB7548S12 DC-DC converter provides reliable, energy efficient and cost-effective solutions for the most challenging systems.