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參數(shù)資料
| 型號： | PWR-82331-12 |
| 廠商： | DATA DEVICE CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 50 A, UFM26 |
| 封裝： | 3 X 2.100 INCH, 0.390 INCH HEIGHT, PACKAGE-26 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 564K |
| 代理商： | PWR-82331-12 |
9
LAYOUT AND EXTERNAL COMPONENTS
Important: The following layout guidelines and required exter-
nal components are critical to the proper operation of these
motor drives.
External connections can be easily made to the hybrid by any of
the following methods:
Solder a wire around each pin.
Use pin extenders to raise the height of each pin so a
printed circuit board can be mounted on top of the hybrid.
Use a printed circuit board with a cutout that will enable the
printed circuit board to slide over the pins.
Permanent damage will result to the motor drive if the user
does not make the following recommended ground connec-
tions that will ensure the proper orientation of the hybrid.
The Vb and logic grounds are on pins 19, 22 and 26 (GND). The
VSS connections for the output stage are on pins 1, 5, and 8
(VSS). To prevent damage to the internal drive circuitry, the
differential voltage between the GND (pins 19, 22, 26 ) and
VSS ( pins 1, 5, 8) must not exceed ± 3 V max, dc or peak. This
includes the combined voltage drop of the associated ground
paths and the voltage drop across RSENSE ( see FIGURE 12).
For example, a value for RSENSE of 0.025
will give a voltage
drop of +1.25 V at 50 A and allow enough margin for the voltage
drop in the ground conductors. Locate RSENSE 1" - 2" maximum
from the hybrid. It is critical that all ground connections be as
short, and of lowest impedance, as the system allows.
C1, C2, and C3 are 1
F, +10 V ceramic capacitors that provide
a low ac impedance between Vss pin and GND. You must use
one capacitor for each VSS pin-to-GND connection (total of three
capacitors in all ), these capacitors are independent of the type of
drive scheme used. ( i.e., Trapezoidal or Sinusoidal drive ). Since
placement of these capacitors is critical, place these capacitors
across the hybrid, if possible. Please note, on FIGURE 12, that
C1, C2, and C3 must go directly from terminal-to-terminal on the
hybrid - do not daisy chain along the ground return.
C4, C5, and C6 are the 0.1
F ceramic bypass capacitors that
suppress high frequency spiking. The voltage rating should be
two times the maximum system voltage.
These capacitors
should be located as close to the hybrid as possible.
Care must be taken to control the regenerative energy produced
by the motor in order to prevent excessive spiking on the Vcc
line. Accomplish this by placing a capacitor or clamping diode
between the Vcc and the high-power ground return.
FIGURE 12. PWR-82331/333 GROUND CONNECTIONS
GROUND CONNECTIONS
C1, C2, C3 = 1
F, 10 V CERAMIC CAPACITORS
C4, C5, C6 = 0.1
F, CERAMIC CAPACITORS
C7 = 0.01
F, 100 V CERAMIC CAPACITORS
C7 = 0.01
F, 50 V CERAMIC CAPACITORS
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