ST L6470H - Table 28. PWM Frequency: Multiplication Factor; Table 29. Available PWM Frequencies [Khz]: 8 Mhz Oscillator Frequency

Programming manual L6470
48/64 Doc ID 16737 Rev 2
The F_PWM_DEC bits set the multiplication factor of PWM frequency generation.
In the following tables all available PWM frequencies are listed according to oscillator
frequency, F_PWM_INT and F_PWM_DEC values (CONFIG register OSC_SEL parameter
has to be correctly programmed).
Table 28. PWM frequency: multiplication factor
F_PWM_DEC [2..0] Multiplication factor
000 0.625
001 0.75
010 0.875
011 1
100 1.25
101 1.5
110 1.75
111 2
Table 29. Available PWM frequencies [kHz]: 8 MHz oscillator frequency
F_PWM_DEC
F_PWM_
INT
000 001 010 011 100 101 110 111
000 9.8 11.7 13.7 15.6 19.5 23.4 27.3 31.3
001 4.9 5.9 6.8 7.8 9.8 11.7 13.7 15.6
010 3.3 3.9 4.6 5.2 6.5 7.8 9.1 10.4
011 2.4 2.9 3.4 3.9 4.9 5.9 6.8 7.8
100 2.0 2.3 2.7 3.1 3.9 4.7 5.5 6.3
101 1.6 2.0 2.3 2.6 3.3 3.9 4.6 5.2
110 1.4 1.7 2.0 2.2 2.8 3.3 3.9 4.5