Texas Instruments DRV2605LEVM-MD, Руководство пользователя

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From DRV2605L
Measurement and Analysis—Waveform Sequences
www.ti.com
4 Measurement and Analysis—Waveform Sequences
The DRV2605L device uses PWM modulation to create the output signal for both ERM and LRA
actuators. To measure and observe the DRV2605L output waveform, connect an oscilloscope or other
measurement equipment to the filtered output test points,
OUT+ and OUT– . Figure 5 shows the setup of
the terminal block and test points used to connect external actuators and measure waveforms.
Figure 5. Terminal Block and Test Points
4.1 TripleClick and StrongClick Example Waveforms
Figure 6 displays the tripleClick waveform output for an LRA (trace C1 and C2) and the strongClick
waveform for an ERM (trace C3 and C4) the same time. The differential output (trace Math) is trace C1-
CT the ERM was operated in open-loop mode while the LRA was operated in auto-resonance (closed
loop) mode.
Figure 6. TripleClick and StrongClick Waveform Played at the Same Time
6 DRV2605L Multi-Driver ERM, LRA Haptic Driver Evaluation Kit User’s Guide SLOU400 – September 2014
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