MPQ2166GD-Z

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The MPQ2166GD-Z is a DC/DC voltage regulator with integrated field effect transistors (FETs) gate drivers. It is specially designed to drive high-side and low-side N-channel MOSFETs in switch-mode power supplies (SMPS). The device integrates all transmission function between a DC/DC controller and final, from the isolation boundary. Allowing a very high degree of flexibility to match multiple applications, the MPQ2166GD-Z provides a selectable operating frequency up to 500KHz as well as a built-in adaptive dead-time control.

The MPQ2166GD-Z is ideal for various consumer, computing, communication, industrial and automotive applications such as laptop adaptors and motor drives. .

Application Field

The MPQ2166GD-Z is a DC/DC voltage regulator that is particularly suitable for consumer, computing, communication, industrial and automotive applications. This is mainly due to the following four key features:

• Switch-Mode Power Supply: It can be used for switch-mode power supplies (SMPS) such as laptop adaptors and motor drives.
• High Speed Gate Drivers: It provides high speed gate drivers to enhance the performance of DC/DC power supply systems.
• Adaptive Dead-Time Control: It has adaptive dead-time control to adjust the driving time of the high and low side FETs. This feature provides precise operation even under varying load conditions.
• Selectable Frequency Operation: The MPQ2166GD-Z has a selectable operating frequency that can be up to 500KHz.

Working Principle

The main function of the MPQ2166GD-Z is to drive two N-channel MOSFETs: one high-side and one low-side transistor. It has three logic inputs: gate, enable and voltage detection signals. These three signals control the operation of the gate drivers. Additionally, it provides a gate drive frequency of up to 500KHz and an adjustable dead-time control to reduce current flow through both MOSFETs when they turn on or off.

The enable input is an active-low signal that is used to enable or disable the device. When the enable signal is at a low level, the gate driver is disabled and the MOSFETs remain off. When the enable signal is at a high level, the gate driver operates and the MOSFETs are enabled.

The gate input is an active-high signal. When the gate signal is at a high level, the MOSFETs are driven to full on and off. When the gate signal is at a low level, the MOSFETs remain off.

The voltage detection signal is used to detect the voltage of the output. It is an active-low signal that switches off the gate driver when the output voltage falls below a predetermined threshold. This feature helps to protect the device from overvoltage conditions.

The MPQ2166GD-Z also includes an adaptive dead-time control. This feature adjusts the driving time of the MOSFETs depending on the load conditions. When the load increases, the dead-time is increased to reduce the current flow through the MOSFETs. This feature helps to improve efficiency and protects the device from overcurrent conditions.

To sum up, the MPQ2166GD-Z is an efficient and reliable DC/DC voltage regulator with integrated FET gate drivers. It is suitable for various applications such as laptop adaptors and motor drives. Its key features include high speed gate drivers, adaptive dead-time control, and selectable frequency operation.

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