MP2158AGQH-P

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The MP2158AGQH-P is a Synchronous Step-Down DC-DC Converter with Internal MOSFETS, part of the voltage regulators range of DC-DC switching regulators. Its design makes it ideal for a wide range of applications, supporting an input voltage range of 2.6V to 10V, and a 1.5A continuous output current capability. With a maximum operating frequency of 2MHz, this device is suitable for a variety of power management systems, from supplying application microcontrollers, FPGAs and modems, to safely charging Li-Ion batteries.

Features

The MP2158AGQH-P’s most notable features and benefits include the following:

• Integrated FETs, reducing external component count
• High efficiency step-down voltage conversion
• 3.3V to 5V support, with optional EN# pin
• Soft-start/precharge, overload and thermal protection
• High switching frequencies up to 2MHz
• Power on reset
• Small form factor

The MP2158AGQH-P’s wide input voltage range and high switching frequency makes it suitable for different types of power management application, such as battery charging, general-purpose power supplies, automotive, and industrial.

Overview of Working Principle

In terms of the MP2158AGQH-P’s working principle, when the enable pin (EN#) is active, the device switches start operating. The inductor current value is first limited by the output capacitor and then is ramped up at the switching frequency. The peak current increases along with the input voltage until it reaches the current limit setting point. The internal power MOSFETs alternate between active and standby, and a synchronous rectifier MOSFETs is used to maintain efficiency. As the inductor current reaches the current limit point, it is supplied to the output filter capacitor until the voltage reaches the reference voltage. This controls the output voltage, and the device continues operating at this frequency as long as the input voltage remains above the minimum operating voltage.

Applications

The MP2158AGQH-P is an ideal solution for a wide range of applications requiring efficient, high power step-down power conversion. These applications include, but are not limited to:

• Portable medical device power supplies
• Set-top box power supplies
• Digital audio amplifiers
• Industrial electronics, automotive and battery charging
• Sensors and metering equipment
• Point-of-Load power converters

The MP2158AGQH-P is a perfect solution for most power management needs and with the EN# pin provides additional flexibility in terms of output voltage control.

Conclusion

For advanced power management in a wide range of applications, the MP2158AGQH-P synchronous step-down DC-DC voltage converter is an excellent choice. Its compact design and high efficiency make it suitable for a variety of systems, and it is very easy to set up and use. With a wide input voltage range spanning from 2.6V to 10V, and frequencies of up to 2MHz, the MP2158AGQH-P provides a great solution for many different power management applications.

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