TPS51124RGERG4

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TPS51124RGERG4 is a cost-effective, synchronous step-down converter of Texas Instruments integrated switch and voltage regulator. This chip can provide regulated output voltage from an input voltage range of 5.5V to 24V. With high efficiency, tight output current limits and low standby current, TPS51124RGERG4 reliably produces low output voltage solutions. It is mainly used in integrated system power delivery, and can be used in high performance personal computers, workstations and high end motherboards.

In terms of application field, TPS51124RGERG4 can be widely used in the related fields based on its features, such as high performance personal computers, workstations, server applications, USB and port replicator applications. It can also be used in multiple CPU systems, VRM auxiliary power and other 1-20A voltage regulation applications.

Working principle of TPS51124RGERG4 is quite simple to understand. In most situations, it will work in the following four stages: first is input voltage sensing, second is soft start and loading, third is pulse width modulation (PWM) control, and forth is output discharge. The input voltage sensing part is to sense the input voltage, and the output voltage of the chip is directly proportional to the input voltage. The soft start stage is to limit the inrush current when the chip is switched on, and the loading stage is to adjust the output voltage according to the Soft_on register setting. The PWM control part is to moderate the output voltage and current. The PWM principle of TPS51124RGERG4 is to compare the output voltage with an internal reference voltage, which can realize the regulation of output voltage. The output discharge stage is to reset the chip when the output voltage need to be discharged.

In conclusion, TPS51124RGERG4 is an efficient voltage regulator of Texas Instruments applicable to the fields like high performance personal computers, workstations, server applications, USB and port replicator applications. Its working principle is very simple to understand and can be divided into four parts: input voltage sensing, soft start and loading, pulse width modulation (PWM) control and output discharge.

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