MLX90316KDC-BDG Datasheet, PDF (18/45 Pages) Melexis Microelectronic Systems – Rotary Position Sensor IC

MLX90316
Rotary Position Sensor IC
The PWM frequency is selected by the PWMT parameter.
PWM Frequency Code (based on typical main clock frequency)
Oscillator Mode
Pulse-Width Modulation Frequency (Hz)
100
200
500
1000
Low Speed
~35000
~17500
~7000
~3500
High Speed
-
~50000
~20000
~10000
For instance, in Low Speed Mode, set PWMT=7000 (decimal) to set the PWM frequency around
500Hz⁽²¹⁾.
14.1.3. Serial Protocol Output Mode
The MLX90316 features a digital Serial Protocol mode. The MLX90316 is considered as a Slave node.
See the dedicated Serial Protocol section for a full description (Section 16).
14.1.4. Switch Out
Parameter
KD
KDHYST
Value
Unit
0…359.9999
deg
0 … 1.4
deg
The switch is activated (Sw_lo) when the digital angle is greater than the value stored in the KD
parameter. This angle refers to the internal angular reference linked to the parameter DP and not to the
absolute physical 0°angle.
The KDHYST defines the hysteresis amplitude around the Switch point. The switch is actually activated if
the digital angle is greater than KD+KDHYST. It is deactivated if the digital angle is less than
KD-KDHYST.
The mandatory application diagram to use this feature is depicted in the Figure 9. See section 7 for the
electrical characteristic.
If the Switch feature is not used in the application, the output pin needs to be connected to the ground.
MLX90316
175 Ω
SWITCH
OUT
5V
1k5
to uC
I/O
Port
ECU
Figure 9 – Application Diagram for the Switch Out
21 _{In order to compensate the lot to lot variation of the main clock frequency (Ck), Melexis strongly recommends trimming the}
PWM frequency during EOL programming (see the PTC-04 documentation).
3901090316
Rev10
Page 18 of 45
Jul/13