MP24943DS-LF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MP24943DS-LF Application Field and Working Principle

The MP24943DS-LF is a DC-DC switching regulator from the PMIC-Voltage Regulators-DC DC Switching Regulators family. This regulator is a pulse width modulated (PWM) buck regulator with a wide input voltage range of 3V to 100V. The regulator integrates a low-side power MOSFET and can operate with a maximum duty cycle of 100%. It has a 0.8V to 5V adjustable output voltage range and can operate in either continuous or pulse skip modes.

The MP24943DS-LF has a very fast transient response and is capable of accommodating a large load current of 8A. The device also has an integrated over-current, over-voltage and over-temperature protection and also features over-voltage and under-voltage lockout functions. Furthermore, the device has a power-good output signal which indicates when the output voltage is within its regulated range.

Working Principle

The MP24943DS-LF follows the typical buck DC-DC switcher topology. The input voltage is fed to the MOSFETs gate via the non-inverting driver stage and current sense resistor. This creates a switching action at the internal MOSFETs and generates a PWM output voltage at the regulator’s output. The output voltage is then fed to the error amplifier which compares the output voltage with an internally fixed reference voltage. This comparison is then fed back to the non-inverting driver stage of the PWM control circuit.

If the output voltage is lower than the reference voltage, the PWM control circuit will take corrective action to increase the duty cycle and thereby increase the output voltage. Conversely, if the output voltage is higher than the reference voltage, the PWM control circuit will decrease the duty cycle and reduce the output voltage. The output voltage is thereby constantly regulated and kept within the specified voltage range.

Features and Applications

The MP24943DS-LF is a highly integrated DC-District switcher and offers excellent performance and an efficient operation. Being a highly efficient regulator, it can operate in pulse skip mode at light load conditions, allowing it to achieve a high efficiency at all load condition. The output current can be sensed with a sense resistor and the output voltage can be adjusted via an external resistor divider. Additionally, the MP24943DS-LF also has a power-good signal, indicating the output voltage is in its regulated range, an enable signal and a soft started signal for synchronized enable.

The MP24943DS-LF DC-DC switching regulator can be used in a wide variety of applications such as power-supplies, battery chargers, portable electronics, general consumer products, computing, industrial and medical equipment. The device can also be used to step-down from a wide variety of source voltage inputs such as Li-Po, Li-Ion, and lead-acid batteries, as well as AC sources.

Conclusion

The MP24943DS-LF is a highly integrated and efficient DC-DC switching regulator ideal for a wide range of applications. Thanks to its wide input voltage range, fast transient response and integrated protection features, it can be used to easily regulate power sources and step-down voltage efficiently and reliably.

The specific data is subject to PDF, and the above content is for reference