UCC27531DR

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UCC27531DR is a high-side, non-inverting 3A gate driver device, which has been developed by Texas Instruments as an ideal solution for driving larger power switches on a single chip. It is well suited for applications such as direct current (DC) to DC converters, AC/DC power supplies and automotive applications. This driver device is optimised to reduce the power losses associated with switching large MOSFETs and IGBTs, which are typically used in power converters. In this article, we shall discuss the application fields and working principles of the UCC27531DR.

Application fields of UCC27531DR

The UCC27531DR is ideal for various power switching applications, as it integrates all the features needed for driving larger power switches. It has been especially developed for supplying gate drivers for power MOSFETs and IGBTs. In addition to this, the device is also well suited for high-temperature, high-current application areas such as automotive, computing, telecom and industrial motors. In particular, the UCC27531DR is suitable for driving larger power MOSFETs and IGBTs in automotive powertrain systems for power converters, in AC/DC supplies and in DC/DC converters. The UCC 27531DR can be used as both a general-purpose gate driver and as a high-side driver in a system.

Working principle of UCC27531DR

The UCC27531DR has been designed to assist with the efficient and reliable operation of MOSFETs and IGBTs in switching applications. The device implements a non-inverting logic configuration and has integrated logic level shifting so that it can be connected to a low voltage logic control. The device also features an active Miller clamp circuit which assists in safely turning off the MOSFET or IGBT in case of a fault. The integrated level shifters and active Miller clamp circuitry also allow for a maximum crossover voltage between the source and the gate pins. Furthermore, the device also features over-temperature protection and under-voltage lockout (UVLO) protection, which prevents the device from operating at unsafe voltages.

In updating the traditional gate driver circuit, UCC27531DR simplifies the board design process by replacing multiple external discrete components (such as resistors, capacitors, diodes and inductors) with a single driver device. This reduces the overall footprint and cost of the design, as well as eliminates the need for external gate driver components. The UCC27531DR is also simpler to use than other gate drivers, as it does not require drivers to be connected to both the source and the gate. Instead, it allows for a single connection to the input logic for operating the gate driver.

In sum, the UCC 27531DR is an ideal solution for driving larger power switches. It efficiently reduces power losses associated with switching large MOSFETs and IGBTs. Moreover, the device’s ability to operate at high temperatures and high currents, ensures its suitability for a range of applications such as automotive, computing, telecom and industrial motors. Additionally, its integrated level shifting and active Miller clamp circuitry allows for a higher crossover voltage between the source and the gate pins. With such features, the UCC27531DR should prove to be an ideal choice for a cost-effective, reliable and efficient gate driver device.

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