MIC2186BQS-TR

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The MIC2186BQS-TR is a DC-DC switching controller designed to simplify the design of multi-output power supplies. It is an economical yet feature-packed device, incorporating several features to maximize efficiency and reduce circuit design time. It also provides a robust protection and monitoring feature set for high-reliability dc-dc power supplies. This article will discuss the application field and working principle of the MIC2186BQS-TR voltage regulator.

Application Field

The MIC2186BQS-TR is suitable for a wide range of applications including servers, desktops, laptops, medical devices and industrial systems; some typical examples include processor core power regulation, auxiliary regulation and portable electronics.

The MIC2186BQS-TR is also well suited to be used in automotive, industrial and communications applications where multi-output power supplies are desired. It offers a highly integrated solution with integrated protection features and can undertake the tasks of both a voltage regulator and DC-DC converter.

Working Principle

The MIC2186BQS-TR uses a two-phase synchronous PWM architecture that provides excellent efficiency over a wide voltage range. This architecture allows for both discontinuous conduction mode (DCM) and continuous conduction mode (CCM) operation. It includes several features to make design easier and provide flexibility, including adjustable current limit, over-current and over-voltage protection, as well as thermal shutdown. The MIC2186BQS-TR operates from input voltages of 4.5 V to 32 V, and can supply a load current up to 3 A.

The output voltage can be adjusted with an external voltage divider, and the internal current limit ensures the output is not overloaded. The reference voltage is pin-selectable for better flexibility and to facilitate ease of programming. The two signal pins, TRIG and FLAG, facilitate communication between the power controller and the system processor and can be used to disable the output in case of an over-current or over-voltage event.

The MIC2186BQS-TR incorporates a constant-on-time control topology, which eliminates the need for an external loop compensation component, resulting in a simpler and more reliable solution. It is also optimized for fast transient response and low EMI. The device has a wide switching frequency range from 100 kHz to 1 MHz and spread spectrum PWM control, allowing for a very low EMI profile.

Conclusion

In conclusion, the MIC2186BQS-TR is a cost-effective DC-DC switching controller that can be used in a wide range of applications including server, desktop, laptop, medical and industrial systems.

It offers a highly integrated solution with several features to maximize efficiency and reduce circuit design time. It also provides a robust protection and monitoring feature set to ensure reliable operation. The MIC2186BQS-TR is also designed with a constant-on-time control topology to eliminate the need for an external loop compensation component, resulting in a simpler and more reliable solution.

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