The maximum operating frequency of the IR2128SPBF is 500 kHz, but it can be used up to 1 MHz with some limitations. However, it's recommended to consult the application notes and design guidelines for specific use cases.
The bootstrap capacitor should be sized based on the maximum voltage and current requirements of the high-side driver. A general rule of thumb is to use a capacitor with a value of at least 10nF to 22nF, and a voltage rating of 1.5 to 2 times the maximum voltage of the high-side driver.
The recommended dead time between the high-side and low-side drivers is typically around 100-200 ns, but this can vary depending on the specific application and switching frequency. It's essential to ensure that the dead time is sufficient to prevent shoot-through currents and reduce EMI.
The IR2128SPBF has built-in undervoltage lockout (UVLO) protection, but it's still recommended to use external overvoltage protection (OVP) and undervoltage protection (UVP) circuits to ensure the device operates within the recommended voltage range.
The maximum power dissipation of the IR2128SPBF is dependent on the package type and thermal design. For the SPBF package, the maximum power dissipation is around 1.5W, but this can be increased with proper thermal design and heat sinking.
IR2128SPBF datasheet
by International Rectifier
