CS5211EDR14

PMIC - Voltage Regulators - DC DC Switching Controllers

The CS5211EDR14 is a DC-DC switching controller that delivers a wide range of application fields and working principles. The device is designed with a low-power current-mode architecture that is capable of synchronous rectification for improved efficiency. Additionally, it supports a variety of loop compensation techniques and integrated circuit (IC) self-protection features. These features make it well-suited for point-of-load (POL) and distributed power architectures.

Application Fields

The CS5211EDR14 is the preferred solution for a variety of applications such as communications, consumer, industrial, server, and embedded systems. Its application fields include policy-based power systems, distributed-power ground plane structures, and low-voltage point-of-load solutions. This device is available in the standard SOIC, SOT, and QFN packages. It is also suited for applications that require ultra-low noise, high efficiency, and ride-through capability.

Working Principle

The CS5211EDR14 utilizes constant-on-time control and uses an internal volt/amp rating (V/A) to maintain a constant frequency while providing loop response flexibility. This device operates in current-mode control with a programmable soft-start or tracking frequency. Other features of the CS5211EDR14 include an integrated error amplifier with programmable sawtooth slope compensation and a programmable current limit.

The CS5211EDR14 also features an opto-coupler for additional data isolation and two comparators for additional monitoring of the output voltage. The input and output voltages can be monitored and compared, and the input voltage range is from 3.3V to 20V. It also has a programmable UVLOr unde-voltage lockout setpoint for improved system stability. Additionally, the CS5211EDR14 has a switched-mode power converter (SMPC) and supports up to 95% efficiency.

Conclusion

The CS5211EDR14 is a versatile DC-DC switching controller that is well-suited for numerous applications including communications, consumer, industrial, server, and embedded systems. It utilizes current-mode control using an integral V/A circuit to maintain a constant frequency while providing flexible loop response and features an integrated error amplifier with programmable sawtooth compensation. This device has an opto-coupler for additional data isolation and supports up to 95% efficiency. In addition, it has a programmable UVLOr under-voltage lockout setpoint for improved system stability.