IR2118SPBF datasheet by International Rectifier

IR2118SPBF Frequently Asked Questions (FAQs)

• What is the maximum voltage that can be applied to the VCC pin?
  The maximum voltage that can be applied to the VCC pin is 15V, but it's recommended to keep it between 10V to 14V for optimal performance.
• How do I ensure proper bootstrap capacitor selection?
  The bootstrap capacitor should be selected based on the maximum voltage and current requirements of the high-side driver. A general rule of thumb is to choose a capacitor with a voltage rating of at least 2x the maximum voltage on the VCC pin and a capacitance value of 1-10uF.
• What is the purpose of the SD pin, and how do I use it?
  The SD (Shutdown) pin is an active-low input that allows the user to shut down the IC when pulled low. This can be useful for reducing power consumption in standby modes or during fault conditions. To use it, simply connect the SD pin to a logic low signal when you want to shut down the IC.
• How do I handle the dead time between the high-side and low-side drivers?
  The IR2118SPBF has a built-in dead time generator that ensures a minimum dead time of 540ns between the high-side and low-side drivers. However, if you need to adjust the dead time, you can use external resistors and capacitors to modify the dead time. Refer to the application note AN-978 for more information.
• What is the maximum frequency of operation for the IR2118SPBF?
  The maximum frequency of operation for the IR2118SPBF is 500kHz, but it's recommended to operate at frequencies below 200kHz for optimal performance and to minimize electromagnetic interference (EMI).