Virtual current control loop on the Q1, Q2 channels of Root Part Number 1

AN2791

16/18

In Table 5 comparison between the mean current on the loads driven by the regulated

channels of Root Part Number 1 and the unregulated ones. These last have been trained on

the output duty-cycle of the regulated channels.

Table 5.

Results of the last operative condition under test

Input duty

(hold phase)

Unreg. ch.

output duty

(before the

manual

regulation)

Reg. ch.

output duty

Unreg. ch.

mean current

[mA]

Unreg. ch.

pk-to-pk

current [mA]

Reg. ch.

mean current

[mA]

Reg. ch.

pk-to-pk

current [mA]

0.15

0.83

0.73

500

220

400

260

0.25

0.73

0.6

730

280

670

300

0.35

0.64

0.46

1000

380

945

360

0.45

0.54

0.32

1180

440

1220

400

0.55

0.44

0.09

1400

480

1480

400

0.65

0.35

0.09

1400

480

1620

440

0.75

0.23

0.09

1400

480

1600

400