ADP3050-BL1-EVZ

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ADP3050-BL1-EVZ application field and working principle

Introduction

The ADP3050-BL1-EVZ is a synchronous step down DC-DC converter evaluation board from Texas Instruments, primarily designed for applications such as notebook PCs, automotive, and industrial solutions. ADP3050-BL1-EVZ board includes the ADP3050 step down DC-DC converter, a 4.7uH inductor, and a set of selectable input and output capacitors. This board has some unique features such as low start-up current of 200mA, and wide range of input voltage from 6V to 40V. It also offers two frequency mode selection for optimized efficiency.

Application field

The ADP3050-BL1-EVZ is a power efficient and cost effective solution for multiple applications. This board is ideally suitable for notebook PCs, automotive, and industrial solutions. Notebook PCs have fundamental battery power through wide input voltage which the ADP3050-BL1-EVZ supports. Since the efficiency is one of the most important part of automotive application, the ADP3050-BL1-EVZ offers high efficiency for engine starter and ignition coils.

At the same time, ADP3050-BL1-EVZ can support a broad range of open and closed loop control external systems. Moreover, the paired external sense resistor per phase saves the design of a bulky sense PCBs and reduce the cost and space.

Working principle

The ADP3050-BL1-EVZ contains the synchronous step down DC-DC converter as the core, which is an all-in-one IC for non-isolated DC-DC converters. The DC-DC converter features a high-side MOSFET and a low-side MOSFET for transient response and low input current. The integrated Slope Compensation circuit provides stable operation during moderate load transients for applications without an external compensation network of other compensation components.

To adjust the output voltage, an external resistor divider is used to set the output voltage. The output voltage is sensed across the output connection terminals and a voltage regulated feedback loop is then adjusted to the desired output voltage level. The output voltage will remain steady as long as the input voltage is sufficient for the output voltage.

Conclusion

In conclusion, the ADP3050-BL1-EVZ is a cost effective and power efficient evaluation board designed for applications such as notebook PCs, automotive, and industrial solutions. It is based on a synchronous step down DC-DC converter and offers a wide range of input and output voltages. This board offers two frequency modes for optimized efficiency and features a high-side and low-side MOSFET for transient response and low input current.

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