These pins are connected to bootstr

These pins are connected to bootstrap capacitors for thehigh-side floating supply.In actual applications, use either of the VB1A or VB1Bpin because they are internally connected. Voltagesacross the VBx and these output pins should bemaintained within the recommended range (i.e., the LogicSupply Voltage, VBS) given in Section 2.A bootstrap capacitor, CBOOTx, should be connected ineach of the traces between the VB1A (VB1B) and U pins,the VB2 and V pins, the VB3 and W1 pins.For proper startup, turn on the low-side transistor first,then fully charge the bootstrap capacitor, CBOOTx.For the capacitance of the bootstrap capacitors, CBOOTx,choose the values that satisfy Equations (1) and (2). Notethat capacitance tolerance and DC bias characteristicsmust be taken into account when you choose appropriatevalues for CBOOTx.