Half Bridge Driver, SoftTurn-On, Single Input Plus Inverting Shut-Down, All High Voltage Pins on One Side, Separate Logic and Power Ground, Programmable 400-5000ns Deadtime in a 14-pin DIP package
The maximum junction temperature of the IRS21844PBF is 150°C, as specified in the datasheet. However, it's recommended to keep the junction temperature below 125°C for reliable operation and to prevent thermal runaway.
To calculate the power dissipation of the IRS21844PBF, you need to consider the switching losses, conduction losses, and gate drive losses. The datasheet provides formulas and graphs to help you estimate these losses. Additionally, you can use simulation tools or consult with an application engineer for more accurate calculations.
The recommended PCB layout for the IRS21844PBF involves keeping the high-frequency switching nodes (e.g., drain-source voltage) as short as possible, using a solid ground plane, and minimizing the loop area of the high-current paths. The datasheet provides some general guidelines, but it's recommended to consult with a PCB layout expert or follow established design practices for high-power switching circuits.
Yes, the IRS21844PBF can be used in a half-bridge configuration. In fact, it's a common application for this device. However, you'll need to ensure that the bootstrap capacitor is properly sized and that the dead-time between the high-side and low-side switches is sufficient to prevent shoot-through currents.
To protect the IRS21844PBF from overvoltage and overcurrent conditions, you can use external components such as TVS diodes, zener diodes, or voltage regulators. Additionally, you can implement overcurrent protection using sense resistors and comparators. The datasheet provides some guidance on these topics, but it's recommended to consult with an application engineer or follow established design practices for high-power switching circuits.
IRS21844PBF datasheet
by International Rectifier
