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    Part Img IR2155 datasheet by International Rectifier

    • Half Bridge Driver, LO In Phase with RT, Programmable Oscillating Frequency, 1.2us Deadtime in a 8-pin DIP package
    • Original
    • No
    • Unknown
    • Transferred
    • EAR99
    • 8542.39.00.01
    • 8542.39.00.00
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    IR2155 datasheet preview

    IR2155 Frequently Asked Questions (FAQs)

    • The maximum voltage that can be applied to the VCC pin is 20V, but it's recommended to keep it below 18V for reliable operation.
    • The minimum bootstrap capacitor value can be calculated using the formula: CBOOT ≥ (VCC x IPEAK) / (fSW x VBOOT), where IPEAK is the peak current, fSW is the switching frequency, and VBOOT is the bootstrap voltage.
    • The SD (Shutdown) pin is used to disable the IC and reduce power consumption. To use it, connect the SD pin to a logic low signal to shut down the IC, and connect it to a logic high signal or leave it open to enable the IC.
    • The gate resistor value depends on the gate drive current, switching frequency, and power MOSFET characteristics. A good starting point is to use a value between 10Ω to 50Ω, and then adjust it based on the actual circuit performance.
    • The IR2155 can support switching frequencies up to 500 kHz, but the actual frequency limit depends on the specific application, power MOSFET, and layout.
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