Texas Instruments DRV10964, Руководство пользователя

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Turn R5 CCW
DRV10964
Motor Phase
Connector
Power Supply
Input
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Tune Open to Close Loop Handoff Threshold
7 SLAU675 – February 2016
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Copyright © 2016, Texas Instruments Incorporated
DRV10964 Evaluation Module
Figure 3. DRV10964 EVM With Various Connections and User Interface
7 Tune Open to Close Loop Handoff Threshold
The DRV10964 has the option of changing open to close loop handoff threshold by configuring the
CONFIG pin. If there is an issue with the motor starting up, TI recommends changing the open to close
loop handoff threshold. Different levels of open to close loop threshold can be set based on the voltage
applied (percentage of supply voltage) on the CONFIG pin. The open to close loop handoff can be
changed either by changing the voltage on the CONFIG testpoint or by changing biasing resistors R2 and
R3.
Table 6 shows the available options for open to close threshold and associated configuration.
(1)
Resistor value is based on 1% tolerance. Resistor value is only recommended based on the % in the first column. Any
resistance divider value can be selected as long as the ratio meets requirements.
Table 6. CONFIG Pin Configurations for Open to Close Loop Handoff Threshold
Config Pin (% V
CC
)
Ratio of (R3/R2)
Open to Close Handoff
Threshold (Hz)
Config Pin Voltage
for V
CC
= 5 V
Suggested Resistance
Value
(1)
R3 (k Ω ) R2 (k Ω )
3.14 78 0.16 5 160
9.4 12.5 0.47 10 105
15.6 25 0.78 15 95.3
21.8 37.5 1.09 20 91
28.1 50 1.41 25 88.7
34.4 62.5 1.72 30 88.7
40.6 75 2.03 35 86.6
46.8 87.5 2.34 40 84.5
53.1 100 2.66 45 84.5