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AN4539 Datasheet(PDF) 4 Page - STMicroelectronics

Part # AN4539
Description  HRTIM cookbook
PDF  33 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4539 Datasheet(HTML) 4 Page - STMicroelectronics

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List of figures
AN4539
4/33
DocID026506 Rev 1
List of figures
Figure 1.
Basic PWM generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 2.
HRTIM configuration for generating basic PWM signals . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 3.
Generation of multiple PWM signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 4.
PWM generation with the master timer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 5.
Arbitrary waveform generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6.
Voltage-mode buck converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 7.
VM buck waveforms, including ADC sampling and interrupts . . . . . . . . . . . . . . . . . . . . . . 20
Figure 8.
PWM interrupts and register update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 9.
Voltage mode buck with synchronous rectification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 10.
Buck operation with FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 11.
Non-inverting buck-boost converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 12.
Buck-boost operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 13.
Buck-boost converter operating waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 14.
Transition mode PFC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 15.
Transition mode PFC operation at Ton max and during over-current. . . . . . . . . . . . . . . . . 28
Figure 16.
Transition mode PFC operation at Toff max and Toff min . . . . . . . . . . . . . . . . . . . . . . . . . 29



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