E-L5970D

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The E-L5970D is a member of STMicroelectronics’ STuPID-PACK 2 family of DC-DC switching regulators. As a member of this family of regulators, the E-L5970D is a high-performance, highly reliable, integrated power regulator that can deliver up to 6A of continuous output current. This article will discuss the application field and working principle of the E-L5970D.

Applications

The E-L5970D is suitable for a wide range of applications, including wireless and power management systems, industrial automation, consumer electronics, home automation, automotive electronics, and more. It is designed to provide efficient, low-noise power regulation to ensure a consistent and reliable operation even in extreme temperature conditions. Additionally, its integrated features, such as over-temperature protection, over-current protection, and over-voltage protection, make it a great choice for cost-sensitive applications.

Working Principle

The E-L5970D is a synchronous, step-down DC-DC converter that uses a multi-phase design. It incorporates a pulse-width modulator and a MOSFET-controlled synchronous rectifier for higher efficiency compared to traditional PWM-driven solutions. At the rectifier stage, the pre-regulated input voltage is transformed into a rectified voltage by the synchronous rectifier, which is then regulated by the MOSFET-controlled switching frequency. The average output voltage is measured and compared with a reference voltage to generate an error signal, which is used as a control signal for the pulse-width modulator.

The internal logic generates a pulse-width modulation signal and a MOSFET switching signal based on the error signal. This signal is used to regulate the output voltage and the current delivered by E-L5970D. The E-L5970D also features a power-saving feature, which reduces the number of switching cycles depending on the current load, while maintaining high efficiency over a wide range of output voltages.

In addition to providing the regulating voltage, the E-L5970D also contains several different active cells to provide over-temperature, over-voltage, and over-current protection, as well as for monitoring the power supply. Its integrated capacitors can also reduce input and output ripple, which further helps ensure a stable power supply.

Conclusion

The E-L5970D represents an excellent choice for cost-sensitive applications due to its multi-phase design, active cells, and power saving features. Its integrated features and reliable, efficient performance make it the perfect choice for a wide range of applications, ranging from automotive electronics to power management systems. In short, the E-L5970D is a high-performance, low-noise DC-DC switching regulator that can help provide consistent and reliable power output in even the most extreme temperature conditions.

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