MEE1S0512SC

DC-DC Converters

DC-DC converters are power management devices used to step up or step down a voltage from one DC source to another. The MEE1S0512SC DC-DC converter is a non-isolated buck synchronous switching regulator that uses high frequency switching electronics to efficiently convert the input voltage to the desired output voltage level.

MEE1S0512SC Application Field and Working Principle

The MEE1S0512SC DC-DC converter is suitable for multi-cell lithium battery powered high current application fields. It utilizes the synchronous-rectification structure and the Buck topology which contributes to the excellent conversion efficiency.

The working principle of the MEE1S0512SC is as follows: The power switch and the synchronous rectifier are driven by an oscillator to switch on and off, respectively. When the power switch is turned on, it draws current from the input voltage source and transfers it to the inductor. The current accumulates in the inductor which builds up a magnetic field. When the power switch is turned off, the current begins to flow out of the inductor and charge the output capacitor.

The synchronous rectifier acts as the drain for the inductor current and ensures that the inductor current transfer continuously from the input voltage to the output voltage. The voltage output is regulated by a feedback control loop. This loop senses the output voltage and compares it to the desired output voltage level. In order to regulate the output voltage, the feedback loop adjusts control signals to turn the power switch and synchronous rectifier on and off.

The MEE1S0512SC is designed to operate over a wide input voltage range and provide a wide regulated output voltage range. It also features an overcurrent protection circuit, adjustable soft start, selectable soft turn off time, and a power saving Sleep mode.