IR2117

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IR2117 is a high voltage, high speed power MOSFET and IGBT driver with independent high and low side referenced output channels. It is suitable for power control applications such as motor drives, induction heating, non-isolated dc/dc converters, and switch-mode power supplies (SMPS). IR2117 is in the PMIC - Gate Drivers classification, as it provides gate drive voltage and gate current to turn on and off power transistors.

Application Field

IR2117 is primarily used in applications where high speed switching, noise immunity, and common-mode voltage rejection are key requirements. Power devices such as MOSFETs and IGBTs can be driven by this IC in DC-DC converters, inverters, and other applications requiring high current modulation and fast switching. This can also be used in battery powered applications due to its low power consumption and wide operating temperature range (-40°C to 125°C).

Working Principle

IR2117 consists of two separate low side referenced, high and low side driver, independent output channels. The high and low side drivers provide gate drive voltage and gate current to turn on and off power transistors. The driver circuits are protected from over-voltage and reversed polarity during power on through an internal clamping device. Each output can support up to 500mA of gate current, which should be adjusted to the power device\'s gate capacitance. The power MOSFET or IGBT is turned on and off by applying appropriate gate drive voltages to the Gate terminals.

IR2117 has a fast switching time thanks to its low gate charge requirement. The low and high side outputs are synchronized to minimize voltage spike on the power devices. Additionally, the common-mode voltage is minimized to reduce EMI noise. This IC comes in a SSOP-24 package and requires a minimum number of external components for operation.

Conclusion

IR2117 is an ideal solution for motor drive, induction heating, and switch-mode power supply applications. Its independent high and low side outputs, fast switching time, and low power consumption make it a great choice for battery powered applications. Additionally, with its extended operating temperature range and protection from over-voltage, the IR2117 is a robust and reliable solution for industrial and automotive applications.

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