IRS21867STRPBF Integrated Circuits (ICs)

The IRS21867STRPBF is a dual current-limited non-inverting high and low side gate driver from Infineon Technologies. It features two independent channel outputs and integrated, flexible diagnostic features. It is designed to operate from a wide supply voltage range of up to 30V, and is suitable for driving a variety of Power MOSFETs and IGBTs.

The IRS21867STRPBF belongs to the PMIC – Gate Drivers family of products. This family of devices provides a low-power, low-cost solution to drive high and low side power switches, aiding in the implementation of a wide range of power management applications. They offer protection against short circuits, over-voltage, over-current, overtemperature and under-voltage conditions, simplifying the design-in process.

The main application field of the IRS21867STRPBF includes automotive, industrial, communications and consumer electronics. Its broad supply voltage range and wide selection of operating environment temperature conditions make it an ideal solution for operating in an array of industrial and consumer electronics systems.

The IRS21867STRPBF driver works in a three-phase bridge configuration for motor-driven applications such as permanent magnet synchronous motor drives and three-phase inverters. It comprises of two independent channels with high side and low side driver outputs for each phase of the bridge. The high and low side outputs can be driven independently, making it possible to implement two-level, three-level, or half-bridge operation.

The operating principle of the IRS21867STRPBF is simple. Each high side and low side output is independently configured and activated via logic input signals. A dead time between the high and low side outputs is used to prevent both outputs from conducting simultaneously and shorting the bridge phase. When disabled, the outputs remain in their last active states. In addition, the drivers feature a built-in bootstrap power supply, allowing them to switch high side drivers with any voltage level.

To protect the drivers in the event of catastrophic fault conditions such as short to energy, the drivers also have integrated fault diagnostic features such as open load detection, short to supply detection and over-voltage protection. The drivers also feature independent thermal shut down in order to limit the junctions temperature.

The IRS21867STRPBF is an advanced low-power gate driver which offers a complete solution for motor control applications. It provides comprehensive protection features and diagnostic capabilities along with a wide operating voltage range. With its simple operating principle, wide range of applications and robust protection features, the IRS21867STRPBF is a great choice for driving high and low side power switches.