The maximum operating frequency of the IRS21844PBF is 500 kHz, but it can be operated up to 1 MHz with reduced performance.
To ensure the bootstrap capacitor is properly charged, make sure the VCC pin is powered up before the HB pin, and the bootstrap capacitor should be at least 10 times the value of the output capacitance.
The recommended layout for the IRS21844PBF is to keep the high-current paths short and wide, and to use a solid ground plane to reduce EMI. The input and output capacitors should be placed close to the IC.
To protect the IRS21844PBF from overvoltage and undervoltage conditions, use a voltage regulator or a voltage supervisor to regulate the input voltage, and consider adding overvoltage protection (OVP) and undervoltage protection (UVP) circuits.
The maximum power dissipation of the IRS21844PBF is 2.5 W, but it can be increased by using a heat sink or a thermal pad to reduce the junction temperature.
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IRS21844PBF Overview
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