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UCD3138128PFC Datasheet(PDF) 46 Page - Texas Instruments |
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UCD3138128PFC Datasheet(HTML) 46 Page - Texas Instruments |
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46 / 80 page  Phase Shift Phase Trigger = Phase Trigger Register value or Filter Duty DPWM0 Start of Period Period Counter DPWM0 Start of Period DPWM1 Start of Period Period Counter DPWM1 Start of Period UCD3138128, UCD3138A64 SLUSBZ8A – JUNE 2014 – REVISED SEPTEMBER 2014 www.ti.com Device Functional Modes (continued) Cycle Adjust B has no effect in Normal Mode. 9.4.1.2 Phase Shifting In most modes, it is possible to synchronize multiple DPWM modules using the phase shift signal. The phase shift signal has two possible sources. It can come from the Phase Trigger Register. This provides a fixed value, which is useful for an application like interleaved PFC. The phase shift value can also come from the filter output. In this case, the changes in the filter output causes changes in the phase relationship of two DPWM modules. This is useful for phase shifted full bridge topologies. The following figure shows the mechanism of phase shift: Figure 30. Phase Shifting 46 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Product Folder Links: UCD3138128 UCD3138A64 |
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