TLE82453-3SA_15 Datasheet, PDF (26/71 Pages) Infineon Technologies AG – 3 Channel High-Side and Low-Side Linear Solenoid Driver IC

TLE82453-3SA
Current Control
+/- 1%
I_{LOAD_AVG}
(mA)
+/- 5 mA
683
Setpoint (decimal)
1365
2047
Figure 8 Output current transfer function and accuracy
8.3
Dither waveform
A triangular dither waveform can be added to the average current setpoint in order to reduce the hysteresis of the
driven solenoid valve. The dither waveform is shown in Figure 9. The frequency of the dither waveform is set by
programming the STEPS field in the DITHER register. The value of the STEPS field determines the number of
dither steps in one quarter of the dither waveform. The time duration of each step is set by programming the N and
M fields in the CLOCK-DIVIDER register. The amplitude of the signal is determined by the contents of the STEPS
field and the contents of the STEP SIZE field of the DITHER register (see Figure 9). The application software must
take care that the product of the steps and stepsize does not exceed 0x03FF hex. When dither is disabled or a
new value is entered, the current dither period will be completed.
Data Sheet
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26
Rev 1.0, 2015-03-27