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Revision 1.4

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AS5132

Datasheet - Detailed Descri p ti on

Figure 18. Block Diagram of the Pre-Commutation Function

Note:

The dynamic pre-commutation is set to zero always if the direction is changed over the pin DIR. A new value PRE_COM_DYN must be

written again. The static pre-commutation is always enabled and will shift the output.

7.3.4 Commutation Output UVW

The pre-commutation function is used only at the U,V,W output. Figure 19 shows the transition on the outputs U,V,W in case of a two pole pair

configuration. The static pre-commutation value was set to 12 degrees.

Figure 19. UVW Output Transitions with Pre-Commutation

PC Adder stat.

Dir

PC Adder dyn.

Dir

Tracking ADC

ANGLE<8:0>

DIR

SSI value

PRE_COM_DYN<6:0>

Zero Angle

Adder

OTP value

zero_ang<8:0>

+/-

+/-

SSI Read Angle

PWM

PWM ENC

U, V, W

ABI ENC

A, B, Index

UVW ENC

OTP value

PRE_COM_STAT<2:0>

0° mech.

0° electr.

30° mech.

60° electr.

60° mech.

120° electr.

90° mech.

180° electr.

120° mech.

240° electr.

150° mech.

300° electr.

180° mech.

0° electr.

210° mech.

60° electr.

240° mech.

120° electr.

270° mech.

180° electr.

300° mech.

240° electr.

330° mech.

300° electr.

-12° mech.

0° electr.

18° mech.

60° electr.

48° mech.

120° electr.

78° mech.

180° electr.

108° mech.

240° electr.

138° mech.

300° electr.

168° mech.

0° electr.

198° mech.

60° electr.

228° mech.

120° electr.

258° mech.

180° electr.

318° mech.

300° electr.

288° mech.

240° electr.

Counter Clockwise rotation

12° static pre-commutation

Clockwise rotation

12° static pre-commutation

0° mech.

0° electr.

30° mech.

60° electr.

60° mech.

120° electr.

90° mech.

180° electr.

120° mech.

240° electr.

150° mech.

300° electr.

180° mech.

0° electr.

210° mech.

60° electr.

240° mech.

120° electr.

270° mech.

180° electr.

300° mech.

240° electr.

330° mech.

300° electr.

12° mech.

0° electr.

42° mech.

60° electr.

72° mech.

120° electr.

102° mech.

180° electr.

132° mech.

240° electr.

162° mech.

300° electr.

192° mech.

0° electr.

222° mech.

60° electr.

252° mech.

120° electr.

282° mech.

180° electr.

342° mech.

300° electr.

312° mech.

240° electr.

-12°

+12°