A good PCB layout for the IRS2110STRPBF involves keeping the high-frequency switching nodes (e.g., VCC, VBS, and HO) as close to the IC as possible, using a solid ground plane, and minimizing the length of the bootstrap capacitor connection. A 4-layer PCB with a dedicated power plane and a separate ground plane is recommended.
The bootstrap capacitor value depends on the switching frequency, output current, and voltage. A general rule of thumb is to choose a capacitor with a value between 10nF to 100nF. A larger capacitor value can provide a more stable bootstrap voltage, but may increase the IC's turn-on time.
The maximum allowable voltage on the VBS pin is typically around 15V to 16V, depending on the specific application and operating conditions. Exceeding this voltage can damage the IC. It's essential to ensure that the bootstrap voltage is clamped to prevent overvoltage conditions.
The dead time between the high-side and low-side switches is critical to prevent shoot-through currents. A dead time of around 100ns to 200ns is typically recommended. This can be achieved using a dead-time generator circuit or by programming the gate driver IC to insert a dead time between the switching transitions.
The IRS2110STRPBF has a maximum junction temperature of 150°C. To ensure reliable operation, it's essential to provide adequate heat sinking, such as a thermal pad or heat sink, and to keep the IC away from other heat sources. A thermal interface material can also be used to improve heat transfer.
IRS2110STRPBF datasheet
by International Rectifier
