UCD3138064RMHT datasheet(49/91 Pages) TI1

Part #	UCD3138064RMHT

Description	UCD3138064 Highly Integrated Digital Controller for Isolated Power With 64-kB Program Flash Memory

PDF	91 Pages

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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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

UCD3138064

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SLUSB72B – MARCH 2013 – REVISED SEPTEMBER 2014

6.4.1.2

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 6-23. Phase Shifting

Detailed Description

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UCD3138064RMHT Datasheet(PDF) 49 Page - Texas Instruments