L6208PD View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
L6208PD Datasheet PDF : 35 Pages
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L6208
PWM current control
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Figure 13. Output current regulation waveforms
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Figure 14 shows the magnitude of the Off time tOFF versus COFF and ROFF values. It can be
approximately calculated from the equations:
Equation 1
tRCFALL = 0.6 · ROFF · COFF
tOFF = tRCFALL + tDT = 0.6 · ROFF · COFF + tDT
where ROFF and COFF are the external component values and tDT is the internally generated
deadtime with:
Equation 2
20 K ROFF 100 K
0.47 nF COFF 100 nF
tDT = 1 µs (typical value)
DocID7514 Rev 2
15/35
35
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