The A and B drivers may be combined into a single driver by connecting the INA and INB inputs together and the OUTA and OUTB outputs together. Then, a single signal can control the paralleled combination as shown in Figure 8-4.

Figure 8-4 Parallel Operation of UCC27423 and UCC27424

Important consideration about paralleling two channels for UCC27423/4 include the INA and INB should be shorted in PCB layout as close to the device as possible, as well as for OUTA and OUTB, in which condition PCB layout parasitic mismatching between two channels could be minimized. The INA/B slope signal should be fast enough to avoid mismatched V_{IN_H} / V_{IN_L}, t_d1 / t_d2 between channel-A and channel-B. It is recommended to have input signal slope faster than 20 V/us.