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BD63731EFV Datasheet(Fiches technique) 11 Page - Rohm

Numéro de pièce BD63731EFV
Description  36 V High-performance, High-reliability Withstand Voltage Stepping Motor Driver
Télécharger  31 Pages
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Fabricant  ROHM [Rohm]
Site Internet  http://www.rohm.com
Logo ROHM - Rohm

BD63731EFV Datasheet(HTML) 11 Page - Rohm

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BD63731EFV
TSZ02201-0P1P0C702140-1-2
© 2019 ROHM Co., Ltd. All rights reserved.
21.Jun.2019 Rev.001
www.rohm.com
TSZ22111
• 15 • 001
3
CR Timer
– continued
CR Voltage
Output current
RNFx
(Note 1) Voltage
Current Detection Value
0 mA
GND
VCRH(1.0 V Typ)
Spike noise
Minimum ON Time Chopping Period
tONMIN
tCHOP
VCRL(0.4 V Typ)
Current Detection Value
GND
Discharge
time
tDISCHARGE
(Note 1) x=1 or 2
Figure 2. Timing Chart of CR Voltage, RNFx Voltage and Output Current
Attach a resistor of at least 10 kΩ to the CR Pin (10 kΩ to 200 kΩ recommended) as lower values may keep the CR
from reaching the VCRH voltage level. A capacitor in the range of 470 pF to 1500 pF is also recommended. Using
capacitance value of several thousand pF or more, however, the noise-masking period (tONMIN) also increases, and
there is a risk that the output current may exceed the setting value due to the internal L and R components of the
output motor coil. Also, ensure that the chopping period (tCHOP) is not set longer than necessary, as doing so will
increase the output ripple, thereby decreasing the average output current and yielding lower output rotation efficiency.
Select optimal value so that motor drive sound, and distortion of output current waveform can be minimized.


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