MPQ2122GJ-P

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MPQ2122GJ-P: Application Field and Working Principle

MPQ2122GJ-P is classified as one of the DC-DC Switching Regulators, which is a subcategory of Voltage Regulator. This component is often used as a high performance secondary side synchronous rectifying step-down DC/DC controller. As a current controller, with a peak current mode control architecture, MPQ2122GJ-P can reach high throughput efficiency of up to 95% and very low component count.

The current applications for MPQ2122GJ-P mainly range from industrial battery management systems, IT SMPS, white goods, charging and powering applications, automobiles, power adapters and AC/DC mother-boards. As a relatively new component, this product is gaining increasing recognition and also becoming a popular choice in the market.

Working Principle

MPQ2122GJ-P follows the constant on-time peak current mode control method, which can achieve fast transient response. It has an internal voltage reference block, which is comprised of an amplifier and a linear regulator. This component also has built-in over-voltage protection to further protect against any unsafe voltage level and an internal high accuracy current-sense resistor.

The control circuit works in a way that senses the sensed input current and compares it against the reference voltage generated by the voltage reference block. An error signal will be generated and sent to the control transistor, which adjusts the duty cycle for the next clock cycle. This closed-loop system is necessary for the controlled output voltage to remain steady.

The main features of this component include its high precision output voltage and very wide input voltage range. It also offers adjustable output voltage, high accuracy current sense resistors, internal high current power switch and as well as temperature protection.

Conclusion

MPQ2122GJ-P is a new and high performance secondary side synchronous rectifying step-down DC/DC controller belonging to the Voltage Regulators family. It is mainly used in the industrial battery management systems, IT SMPS, white goods, charging and powering applications, automobiles, power adapters, AC/DC mother-boards, etc. With its unique current controller and peak current mode control architecture, it can reach high throughput efficiency of up to 95% and features adjustable output voltage, internal high current power switch, and temperature protection.

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