SG1524J

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SG1524J is a datasheet-programmable DC dc switching controller, specially designed for regulating and controlling the stepped-up voltage, current, and power output for switching power supplies.
This device is independent of temperature and process variations, allowing the operator to program the device during production. As a result, this IC can be used in applications where the load voltage, current, and power must be accurately controlled, such as in power amplifiers and systems with high efficiency.

Application Field

SG1524J can be used as a controller in various regulated power supplies such as telephone switching, computer graphical cards, and solarcell charging systems. It can be used in a range of power applications, such as adjustable voltage supplies, isolated switching dc/dc converters, low-dropout regulators, PFC pre-regulators, and many others. It can be implemented in a range of high-efficiency applications with minimal output voltage ripple and low noise.

Working Principle

The SG1524J is based on the Pulse Width Modulation (PWM) principle. It regulates output voltage and current with complex formulas thereby controlling the ON and OFF times of the power switch according to the input data and feedback signals. Basically, it controls the length of the ON-time of the power switch, and this pulse width is compared with the triangle wave voltage (used as reference) to generate PWM signals. In a nutshell, the SG1524J PWM converter works like a feedback loop. It monitors the output voltage and current and compares them with the desired values set by the user. If the actual values differ from the set values, the ON-time of the power switch is adjusted to bring it back in line with the desired values. The ON-time is adjusted until the desired set values are achieved and the loop is broken.

Conclusion

In conclusion, the SG1524J is a datasheet-programmable DC/DC switching controller which can be used to regulate and control the voltage, current, and power output of various regulated power supplies. It is based on the Pulse Width Modulation (PWM) principle and works like a feedback loop where the output voltage and current are monitored and compared with the desired values. It is an integral part of any high-performance and high efficiency power application, allowing more accurate control and more efficient operation.

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