SG2524DRE4

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SG2524DRE4 is a Pulse Width Modulation (PWM) controller designed in CMOS process technology that is suitable for low power applications. It is part of Microchip’s 1.8V SG2524 family of devices and is designed for 12V DC-DC voltage conversion, specifically intended for the Power Management IC (PMIC) market.SG2524DRE4 is a synchronous (buck) voltage regulator controller that operates over a wide range of input and output voltages. It is ideal for applications that require a wide input/output voltage range, such as computer motherboard power supplies, notebook power supplies, and printer power supplies. It also has an integrated sleep mode that enables low power consumption. Other features include built-in protection mechanisms such as a UVLO (Under Voltage Lock Out) protection, over-voltage protection and over-current protection circuit.

The SG2524DRE4 device provides excellent stability and regulation of bipolar regulated outputs. Using it, the output is usually adjusted by varying the duty cycle of the pulse width modulated signal. The device allows for high current applications, as well as low noise due to its high efficiency and low minimum on-time. Additionally, its wide input/output voltage range makes it suitable for many applications.

The SG2524DRE4 device has an integrated Control Logic circuit that enables simple ON/OFF control and the generation of an enable signal. An internal voltage reference allows for an external resistor divider to be used to adjust the output voltage. Additionally, a Loop Compensation pin allows for the external compensation of the voltage loop.

In a buck configuration, the SG2524DRE4 device is used to change a source of higher voltage and current to a lower voltage and current. Using a Schottky diode (or MOSFET) as a rectifier, a high current capacitor helps to store energy during the switching cycle, and a low pass filter (L-C) converts the rectified voltage to an output voltage. During the switching cycle, the SG2524DRE4 device charges the main inductor and the high current capacitor. The process continues until a constant voltage is provided to the load at a predetermined frequency and duty cycle. The selection of the components used for filtering and ripple control determines the characteristics of the output voltage. The SG2524DRE4 device is usually powered from an external 12V voltage source, however, if a higher voltage is needed, the device can be paralleled with other SG2524DRE4 devices.

The SG2524DRE4 device has been designed to be used for a variety of DC-DC voltage conversion applications. It is ideal for the cost-sensitive segment of the Power Management IC (PMIC) market. Its wide input/output voltage range and its low power consumption, make it attractive for applications such as notebook power supplies, printer power supplies and computer motherboards. Its integrated control logic as well as its protection circuits, makes it suitable for most applications.

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