MAX16933CATIS/V+

MAX16933CATIS/V+ Application Field and Working Principle

The MAX16933CATIS/V+ are integrated high performance DC-DC synchronous step-down switching controllers with dynamic channel balancing capabilities. They are suitable for high-efficiency and high-current, scalar and multiphase designs with up to four independent phases with up to 25V maximum input voltage and up to 6V output voltage. The MAX16933CATIS/V+ can provide up to 200mA output current per phase.

The MAX16933CATIS/V+ integrated pre-regulated bias supply, ensures linear behavior of the core from light and heavy loads. Synchronous rectification is achieved through the use of the MAX16933CATIS/V+ chip as an integral driver for both N-Channel and P-Channel. The PWM control scheme gives the designer control over transient response and steady-state response, using a switching frequency from 400Hz up to 600kHz, enabling higher power conversion efficiency and offers superior cost-effective performance in many systems.

Application Fields

The MAX16933CATIS/V+ is supplied in a Pb-free 51-lead Thin Thin Quad Flat Pack (TQFP) package that is ideal for use in portable and distributed point-of-load applications such as laptops, mobile devices, mobile base stations, cellular handsets, E-meters, autonomous devices and automotive infotainment systems. This part is also suitable for industrial, medical, and consumer applications.

Working Principle

The MAX16933CATIS/V+ use a synchronous, fixed-frequency nonlinear Control architecture. The system features a dedicated PWM controller for each phase that measures the output voltage and compensates for any variance in the delivered power. In order to achieve maximum efficiency, the MAX16933CATIS/V+ incorporate both current and temperature sense feedback. As the load changes, compensating signals are sent by the controller to ensure maximum power delivery in each phase. It also keeps the total power consumed by all phases at a minimum level, searching for the best trade-off between delivered power and energy efficiency.

The MAX16933CATIS/V+ implements a number of features that helps to make designs more robust, such as configurable soft-start for both the output and internal components, under-voltage lockout (UVLO) for both the input and the output, and adjustable over-temperature protection for the system. The MAX16933CATIS/V+ also feature dynamic loadline and AVS sense options, thus allowing the designer to tailor the response of their system.

Conclusion

The MAX16933CATIS/V+ is a very high performance integrated DC/DC switching controller with dynamic channel balancing capabilities. It is suitable for a range of applications, such as laptops, mobile devices, E-meters and consumer electronics. It offers very high efficiency and excellent cost-effective performance, in addition to robust protection features to ensure design robustness.