Explain the HIP 4082 pwm input from the datasheet
Yes, this configuration will always be driving the H-bridge in one direction or another.  Some applications (e.g. AC inverters, VFDs) use this technique because their load is inductive and current doesn't necessarily decay to zero between switches.  Instead, the H-bridge free-wheels, and it doesn't actually matter if you are driving the IGBTs or not because the diodes are actually conducting the current (not quite the same with MOSFETs, but similar).

On the other hand, if the H-bridge is used to provide bidirectional control over a DC motor, or if you require active braking (i.e. shorting out the load by having both low sides conducting), you will need to have more than just the 2 states [AH+BL] / [BH+AL].

For more info, I'll turn you over to google: try "sign-magnitude vs. locked-antiphase".