AS5161

Datasheet - Detailed Descr i p ti on

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8.2.2 Application Specific Angular Range Programming

The application range can be selected by programming T1 with a related T1Y and T2 with a related T2Y into the AS5161. The clamping levels

CLL and CLH can be programmed independent from the T1 and T2 position and both levels can be separately adjusted.

Figure 5. Programming of an Individual Application Range

Figure 5 shows a simple example of the selection of the range. The mechanical starting point T1 and the mechanical end point T2 are defining

the mechanical range. A sub range of the internal Cordic output range is used and mapped to the needed output characteristic. The PWM output

signal has 12 bit, hence the level T1Y and T2Y can be adjusted with this resolution. As a result of this level and the calculated slope the clamping

region low is defined. The break point BP defines the transition between CLL and CLH. In this example the BP is set to 0 degree. The BP is also

the end point of the clamping level high CLH. This range is defined by the level CLH and the calculated slope. Both clamping levels can be set

independently form each other.

8.2.3 Application Specific Programming of the Break Point

The break point BP can be programmed as well with 14 bits. This is important when the default transition point is inside the application range. In

such a case the default transition point must be shifted out of the application range. The parameter BP defines the new position.

Figure 6. Individual Programming of the Break Point BP