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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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L9374LF 데이터시트(PDF) 32 Page - STMicroelectronics |
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L9374LF 데이터시트(HTML) 32 Page - STMicroelectronics |
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32 / 80 page  Circuit description L9374LF 32/80 DocID025414 Rev 1 Figure 18. Channels time shift 4.4 Set-point controller The set point controller generates a PWM duty cycle based on a duty cycle value or a regulated current value from the SPI command registers for each output. This circuit is designed to generate two different PWM duty cycle / current regulation values for each output per SPI cycle. This translates to a duty cycle/current level [w(n)] for a duration [t(n)] and then a second duty cycle/current level [w(n+1)] until otherwise commanded for each output per SPI cycle. Depending on what is driving this controller (Direct SPI command (in the form of a duty cycle value) or Current Controller) the end result is either a fixed commanded PWM duty cycle or a regulated current. Figure 19. Set-point controller block diagram |
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