LTC4449EDCB#TRMPBF

PMIC - Gate Drivers

Gate drivers are an important component of any power management system. They provide a high current drive capability to drive external MOSFETs, IGBTs, SCRas, and other load switching devices. In basic circuits, the gate drivers are usually generated by the analog or digital input signals, while the driving capability is limited by the current source capability related to the source. The LTC4449EDCB#TRMPBF is a dual MOSFET/IGBT gate driver with a peak output current of up to 10A and a peak output voltage of up to 21V.

Features

• True high side current sensing.
• Internal 25V zener clamp.
• Independent shutdown for each driver.
• Very low supply current.

Application Field

The LTC4449EDCB#TRMPBF is an ideal gate drive solution for driving high power MOSFETS, IGBTs, and other switching devices in high power applications. Its high peak output current and peak output voltage make it suitable for large power machines, including industrial motor controllers, large power supplies, and other high current switching devices. It is also ideal for medical applications, automotive, and other high-reliability applications.

Working Principle

The LTC4449EDCB#TRMPBF is an open-loop gate driver with a peak output current of 10A and a peak output voltage of 21V. It operates by providing a current (up to 10A) to the gate of an external MOSFET or IGBT, allowing it to switch on or off. It does this using an integrated high-side push-pull driver, which can be driven from a single supply. The driver has a wide output voltage range, allowing it to be used in applications with high voltages, such as solar panels or lithium ion batteries. It also features independent shutdown for each driver, allowing it to be easily shut down in the event of an over temperature or over current condition. The gate driver also features true high side current sensing, which enables it to accurately monitor the current draw of the external device and shut it off in the event of an over-current event.

In summary, the LTC4449EDCB#TRMPBF is an ideal gate drive solution for applications requiring high peak current and voltage. Its integrated high-side push-pull driver, wide output voltage range, and independent shutdown feature make it a versatile and reliable gate driver for many applications.