MIC2196BM

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MIC2196BM Application Field and Working Principle

The MIC2196BM is a low-cost synchronous, fixed frequency, step-down DC/DC converter controller with an input voltage range from 4V to 32V designed to operate at peak efficiency up to 8A. It offers a very low component count solution, providing a single point of regulation between the input voltage source and the output voltage load. The controller uses synchronous rectification for optimal efficiency, and it offers a wide output voltage range from 0.9V to 22V.

The MIC2196BM is ideally suited for automotive, industrial, or commercial applications needing a cost effective, small form factor, and efficient solution. It comes with integrated under-voltage, over-voltage and over current protection which further reduces component count and system cost. Applications include point-of-load (POL) regulators for processor cores, POL regulators for point-of-load regulators for secondary rails, memory rails, and other general purpose DC/DC buck applications.

Working Principle

The MIC2196BM utilizes a peak current mode control architecture with an internal reference to regulate the output voltage. It achieves fast transient response, as well as stable loop operation. An internal oscillator operates at a fixed frequency of 500Hz and controls the semiconductor switch. The IC then regulates the output voltage by sensing the peak current in the high side MOSFET, and controlling the on/off times. The output voltage can be programmed via an external resistor divider or an external voltage signal. The high frequency allows for very small external components while still achieving high efficiency.

The MIC2196BM also features a low-side MOSFET and independent under-voltage, over-voltage and over-current protections provided to ensure the reliability and safety of the system during operation. It has a programmable soft-start option which can be set to reduce inrush current during power up. Additionally, its cycle-by-cycle current limiting and pulse-by-pulse inductor peak current limit protects the MOSFETs from excessive current.

Conclusion

The MIC2196BM is an ideal choice for a range of automotive, industrial, and commercial applications due to its low cost, small size, and efficient operation. It provides an efficient and simple solution for a single point of regulation with integrated protection features that reduce component count and cost. It utilizes peak current mode control with a fixed frequency of 500Hz, enabling efficient operation and precise voltage regulation. Thanks to its outstanding features, the MIC2196BM is becoming increasingly popular in many different applications.

The specific data is subject to PDF, and the above content is for reference