QSB60048S28

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DC DC Converters

DC/DC converters are used to convert a DC voltage into another DC voltage which can be higher or lower than the input voltage. The QSB60048S28 is a power module suitable for a wide range of applications, designed to convert a regulated DC voltage from 48V into a variety of lower regulated DC voltages with the ability to provide high peak and continuous current. It is particularly suitable for industrial motor drive applications.

Working Principle

The QSB60048S28 is a non-isolated buck converter, utilizing a pulse width modulated (PWM) control topology. In a buck converter, power is transferred from the input to the output using switches and inductors. When the switch is closed, the energy stored in an inductor is transferred to the output voltage, increasing its voltage. When the switch is opened, current is no longer applied from the input and the stored energy is released as output voltage.

The efficiency of the converter is determined by the relationship between the duty cycle of the switches and the amount of power transferred. The circuit is operated in a self-oscillating mode where the oscillator switches a power switch on and off, with the duty cycle determined by the output voltage. This determines the output voltage, as higher duty cycle results in higher output voltage.

Application Field

The QSB60048S28 is designed for applications that require a precise voltage regulation of the output voltage. It is suitable for industrial motor drive applications due to its high peak and continuous current output. Its small size and low noise make it suitable for use in situations where space is a priority. Additionally, its fast transient response and excellent noise and ripple rejection capabilities make it an ideal choice for powering devices that require high levels of accuracy and reliability.

The QSB60048S28 can be used in various automation and CCTV systems where precise voltage regulation of the output voltage is required. It can also be used in the automotive sector for various applications such as power steering, electric Mirrors and engines. The converter is also suitable for chargers and adapter applications, where it is used to convert an AC voltage into a precisely regulated DC output voltage.

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