Series:	*
Part Status:	Active

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

The Application Field and Working Principles of the MP1921HQ-A-LF-Z Gate Driver

Introduction

The MP1921HQ-A-LF-Z is a gate driver developed by Monolithic Power Systems (MPS) that is commonly used in a variety of applications such as DC-DC converters, power inverters and switching power supplies. As a PMIC – Gate Drivers, the MP1921HQ-A-LF-Z is a high-speed power MOSFET driver that has the capability to operate in a wide voltage range, up to 10V, and at frequencies of up to 500kHz. The driver is highly efficient, having an operating current of only 40mA, making it suitable for use in portable and low-power devices. It also offers a low-side connected bootstrap diode, UVLO (Under Voltage Lock Out) protection and a charge-pump switching voltage for the high side of the MOSFETs. In this article, we will explore the application field and working principles of the MP1921HQ-A-LF-Z gate driver.

Applications

The MP1921HQ-A-LF-Z is designed for use in DC-DC converters, power inverters and switching power supplies. It is used to drive the high side and low side power MOSFETs of these devices. It has the capability to operate in a wide voltage range, up to 10V, and at frequencies of up to 500kHz, making it an ideal choice for these applications.In DC-DC converters, the MP1921HQ-A-LF-Z can be used to drive the MOSFETs in synchronous buck topologies. It is also suited for use in synchronous boost and sepic converters. In power inverters, the driver can be used to drive the high side and low side output MOSFETs at frequencies of up to 500kHz, allowing the switching characteristics of the MOSFETs to be optimized. In switching power supplies, the driver can be used to drive the MOSFETs in buck, boost, flyback and forward converters.

Working Principles

The MP1921HQ-A-LF-Z is a high-speed power MOSFET driver with the capability to operate at frequencies of up to 500kHz, with a maximum voltage of 10V. It has an operating current of only 40mA, making it highly efficient and suitable for portable and low-power applications.The driver has a low-side connected bootstrap diode, which helps to protect the MOSFETs from back-voltage caused by the output capacitance. It also has a UVLO (Under Voltage Lock Out) protection to protect the MOSFETs from being damaged by excessive voltage. Finally, the driver features a charge-pump switching voltage for the high side of the MOSFETs, allowing for efficient switching of the MOSFETs.

Conclusion

The MP1921HQ-A-LF-Z gate driver is a high-speed power MOSFET driver developed by MPS. It is suitable for a variety of applications such as DC-DC converters, power inverters and switching power supplies. It has the capability to operate in a wide voltage range, up to 10V, and at frequencies of up to 500kHz, making it an ideal choice for these applications. It has a low-side connected bootstrap diode and a UVLO (Under Voltage Lock Out) protection to ensure the safety of the MOSFETs. Finally, it has a charge-pump switching voltage for the high side of the MOSFETs, allowing for efficient switching of the MOSFETs.

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

Part Number	Manufacturer	Price	Quantity	Description