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UCD3138 датащи(PDF) 23 Page - Texas Instruments

номер детали UCD3138
подробное описание детали  UCD3138 Highly Integrated Digital Controller for Isolated Power
PDF  99 Pages
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производитель  TI2 [Texas Instruments]
домашняя страница  https://www.ti.com
Logo TI2 - Texas Instruments

UCD3138 датащи(HTML) 23 Page - Texas Instruments

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Start of Period
Period Counter
Start of Period
Period
Sample Trigger 1
DPWM Output A
Cycle Adjust A (High Resolution)
Event 2 (High Resolution)
Event 1
Event 3 (High Resolution)
Cycle Adjust B (High Resolution)
Event 4 (High Resolution)
DPWM Output B
Blanking A Begin
Blanking A End
Blanking B Begin
Blanking B End
Phase Trigger
Sample Trigger 2
To Other
Modules
To Other
Modules
Multi Mode Open Loop
Events which change with DPWM mode:
DPWM A Rising Edge = Event 1
DPWM A Falling Edge = Event 2 + Cycle Adjust A
DPWM B Rising Edge = Event 3
DPWM B Falling Edge = Event 4 + Cycle Adjust B
Phase Trigger = Phase Trigger Register value
Events always set by their registers, regardless of mode:
Sample Trigger 1, Sample Trigger 2, Blanking A Begin , Blanking A End , Blanking B Begin,
Blanking B End
Figure 8-6. Multi Mode Open Loop
8.8.1.4 High Resolution DPWM
Unlike conventional PWM controllers where the frequency of the clock dictates the maximum resolution of PWM
edges, the UCD3138 DPWM can generate waveforms with resolutions as small as 250 ps. This is 16× the
resolution of the clock driving the DPWM module.
www.ti.com
UCD3138
SLUSAP2J – MARCH 2012 – REVISED NOVEMBER 2021
Copyright © 2021 Texas Instruments Incorporated
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Product Folder Links: UCD3138



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