SG2524DRG4

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SG2524DRG4 Application Field and Working Principle

SG2524DRG4 is a pulse-width-modulation (PWM) controller that is classified under the Power Management Integrated Circuits (PMIC) category. It falls under the Voltage Regulators subcategory, and is further grouped as a DC-DC Switching Controller. With its simple configurable circuit, the SG2524DRG4 offers a wide range of features that make it an optimal choice for power conversion applications. This article will provide an overview of the SG2524DRG4 in terms of its features, application field and working principle.

Features

The SG2524DRG4 integrates an adjustable oscillator, latch, PWM controller, under/overshoot protection circuit and other circuits. It allows users to select either single-ended (floating) or push-pull (totem-pole) output designs. It is operated with a single 5V supply, and provides a minimum 5V drain-to-source on-state resistance (R_{DS(ON) min}). Furthermore, the single-ended output designs feature an exclusive automatic output voltage selection (VSEL) pin, and the push-pull output designs provide both the logic and current requirements. Other features of the SG2524DRG4 include but are not limited to cycle-by-cycle current limit, a power-good (OK) pin, adjustable dead-time control, and external shutdown. It also features an adjustable operating frequency up to 500kHz and is characterized for operation from -40°C to 125°C.

Application Field

The SG2524DRG4 is widely used in a variety of power conversion systems, including but not limited to DC-DC buck converters, AC-DC converters, DC-AC inverters, DC-DC boost converters and solar increase converters, among many others. These applications require it to create a voltage level biased against a desired output in order to operate with a stable level of power. In terms of its application fields, it is ideal for low-power converters as its power delivery is relatively low with a quiescent current (I_Q) of typically 5 mA.

Working Principle

The SG2524DRG4 operates using the principle of pulse-width modulation. This form of modulation involves the use of a rectangular waveform to control the level of a desired output by varying the width of the on/off pulse. The pulse width is modulated depending on the average value of the desired output, thus allowing the output voltage to be regulated. The SG2524DRG4 utilizes an internal bipolar transistor to control its on/off state, and an adjustable Oscillator to modulate the pulse width. Its user adjustable control pins further allow for further customization in terms of output voltage and frequency. When the oscillator reaches a sufficiently high frequency (around 500kHz), the transistor will rapidly switch on and off and is referred to as the “pulse-width modulation” (PWM) mode. Thus, the SG2524DRG4 allows for precise control of the output voltage.

Conclusion

In conclusion, the SG2524DRG4 is a powerful DC-DC switching controller that is ideal for a variety of power supply applications. Its versatile features, such as adjustable oscillator, latch, under/overshoot protection circuit and many more, make it an optimal choice for low-power converters. Additionally, its use of pulse-width modulation facilititates the precise control of its output voltage. All these features combined make it well suited for a variety of power conversion applications.

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