SI82390AD-ISR

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The SI82390AD-ISR is an Isolator-Gate Driver, which is a small insulated-gate bipolar transistor (IGBT) driver. It is designed to drive high-power and high-speed IGBTs with low-power, high-current signals, typically in industrial applications.

The SI82390AD-ISR Isolator provides isolation between trade systems by virtue of galvanic insulation of the system side from the gate drive side. This isolation feature allows for the control of high voltages in the system side, without introducing any risk of short circuit in the gate drive side.

The SI82390AD-ISR hardware consists of four voltage level converters, four power logic-level translate circuits, four power MOSFETs, and one gate driver circuit. The voltage level converters convert a low voltage (typically below 40V) into higher voltage levels. This multiplexer technology requires fewer components and a smaller footprint than a typical IGBT gate driver.

The power logic-level translate circuits provides an interface between the higher voltage level in the system side and the lower voltage level in the gate drive side. This bridge allows the system to control the IGBT with logical voltage levels. The power MOSFETs are configured in a half-bridge configuration in order to drive the IGBT.

The gate driver circuit is the interface between the logic-level interface and the IGBT. This circuit is used to drive the IGBT gate with a low-power, high-current signal. The gate driver circuit converts these signals into voltages necessary to gate the IGBT properly.

The SI82390AD-ISR has two major benefits: it provides galvanic insulation between the system and the gate drive and it reduces the total parts count and board space required for traditional IGBT gate drivers. This makes the SI82390AD-ISR well suited to powering high-power, high-speed IGBTs in these applications.

The SI82390AD-ISR is an ideal solution for larger applications that require isolation of the system and gate driver circuits, as well as those that require smaller components and board space. It is used in industrial applications such as power delivery systems, power conversion components, electric motor drive systems, and voltage regulator circuits.

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