SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
Topologies that require control of multiple switching elements can also be addressed with these same ePWM modules. It is possible to control a Half-H bridge stage with a single ePWM module. This control can be extended to multiple stages. Figure 22-94 shows control of two synchronized Half-H bridge stages where stage 2 can operate at integer multiple (N) frequencies of stage 1. Figure 22-95 shows the waveforms generated by the configuration shown in Figure 22-94.
ePWM module 2 (sync receiver) is configured for Sync flow-through; if required, this configuration allows for a third Half-H bridge to be controlled by ePWM module 3 and also, most importantly, to remain in synchronization with sync source ePWM module 1.