SP6669CEK-L/TRR3

A switch mode power supply (SMPS) is an electrical device that utilizes a switching topology to convert an input voltage to a desired output voltage. The SP6669CEK-L/TRR3 is a switch mode power supply (SMPS) integrated circuit, specifically designed as a DC-DC conversion regulator. This device, which is characterized by the fact that it allows reduced size and low energy losses, is ideal for voltage regulation and power management applications in both automotive and consumer applications.

The SP6669CEK-L/TRR3 comprises of an integrated voltage regulator, power-FETs, current sources, comparator, control circuits, and energy storage element, making it a complete circuit package for DC-DC conversion. The power stage of the device consists of a two phase synchronous buck converter, with a built-in synchronous rectifier, providing a current rating of up to 4 A @ V_IN=25 Vdc. The internal synchronous rectification lowers the conduction losses during the switching, and the integrated power FETs guarantee best efficiency.

The control circuit of the SP6669CEK-L/TRR3 is self-contained and includes a voltage reference with adjustable voltage. Additionally, it integrates an ultra-low dropout voltage regulator (ULVR) to supply power for internal logic circuitry. Through its programming pin, the user can select the output voltage, the operating frequency (f SW ) and the over-current protection level.

The SP6669CEK-L/TRR3 DC-DC switching regulator restricts the output current by sensing the output voltage and comparing it to an internal voltage reference. If a voltage monitoring circuit senses that the output voltage is too low, the switching current limit is reduced. This is done to prevent the SMPS from drawing too much current and damaging the output circuit.

The SP6669CEK-L/TRR3 application field widely embraced by the market is the automotive and industrial fields. The battery management system in these two fields requires strict voltage regulation for different engine functions. In automotive engines, for instance, the voltage must be converted from the electrical system battery voltage to the required voltage for each component or actuating system that must be driven. This helps maintain high efficiency and optimal performance with accurate and reliable supply of power.

In conclusion, the SP6669CEK-L/TRR3 integrated circuit is a complete switching regulator package ideal for applications that require efficient voltage conversion and high performance power supply. It is a small size component, which achieves high energy efficiency, with low power losses and active power regeneration.