MP1924AHS-LF

PMIC (Power management integrated circuit) gate drivers are integrated circuit components specifically designed to control the operations of field effect transistors (FET) and IGBT (insulated gate bipolar transistor). Their features typically include switch driving capability, adjustable gate thresholds, protection and signal buffering, spike suppression and failure indication. The MP1924AHS-LF is a PMIC gate driver typically used in the automotive, industrial, communication and consumer applications.

MP1924AHS-LF Application Field

The MP1924AHS-LF is a 1 channel high-side power MOSFET driver specifically designed to work with P-Channel MOSFETs and IGBTs. It is capable of driving up to 80V and 25A of continuous output current, making it suitable for a variety of automotive and industrial applications such as sensor switching, motor control and brushless DC motor applications. It is also ideal for low-side switch applications, eliminating the need for an external flyback diode. The device is designed to work with logic level inputs and contains an embedded charge pump and ESD protection, making it ideal for automotive and industrial applications.

The MP1924AHS-LF also has a wide operating temperature range of -40°C to +150°C, making it suitable for high temperature applications. Additionally, the device features a fast switching time of 1µs, a low offset voltage of 5mV and a low quiescent current of just 18mA. The device also has a short-circuit protection circuit, enabling it to protect the load in the case of a short-circuit condition.

MP1924AHS-LF Working Principle

The working principle of the MP1924AHS-LF device is quite simple. It consists of two MOSFETs (Metal-Oxide-Semiconductor Field Effect Transistor), one connected to the logic input, the other connected to the output. The logic input is connected to the drain of the first FET and the source of the second FET.

When the logic input is low, the first FET is off, the drain-source connection is open, and the second FET is also off. When the logic input is high, the first FET is turned on, the drain-source connection is closed, and the second FET is turned on. This connection allows the current to flow from the output to the load.

In order to protect both the load and the device, a protection circuit is present in the device that monitors the current through the device. If the current exceeds a certain limit, the protection circuit will turn off the device and isolate the load from the supply.

The MP1924AHS-LF is an ideal device for high-side switch applications, reducing the need for external flyback diodes or secondary FETs. It is capable of driving up to 80V and 25A of continuous output current, making it suitable for a variety of automotive and industrial applications.