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參數(shù)資料
| 型號(hào)： | M54687FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | Bi-DIRECTIONAL MOTOR DRIVER WITH GOVERNOR |
| 中文描述： | 雙電機(jī)驅(qū)動(dòng)器，帶有定向總督 |
| 文件頁(yè)數(shù)： | 6/6頁(yè) |
| 文件大小： | 133K |
| 代理商： | M54687FP |
Bi-DIRECTIONAL MOTOR DRIVER WITH GOVERNOR
M54687FP
MITSUBISHI <CONTROL / DRIVER IC>
CAUTIONS
(1) Oscillation may take place with the setting of RT>K
Ra. Set
R K Ra.
(2) Add a capacitor of 0.1
μ
F to the portion between PSCs to
reduce brush noise of the motor.
(3) Add a capacitor of 10
μ
F to the portion between V
CC
and GND
to reduce brush noise and back electromotive noise of the
motor.
(4) At a low temperature, RT>K
Ra is set due to temperature
characteristics of resistance Ra of the motor. When oscillation
takes place, use resistance with a temperature coefficient for
RT.
(5) When the supply voltage is low, note that saturation of the
output transistor of the IC may prevent the rotating speed for
control. Taking into account motor noise etc., set constants in
the following range.
2.0V V
CC
- (EC+Ia
Ra)
= V
CC
- {RT
IB + V
ref
(1+
)+
Ia}
When the back electromotive force is large with the brakes applied,
for example, malfunction may occur in internal parasitic Di. If
flyback current of 1A or more flows, add Schottky Di to the portion
between the output and the GND.
When the IC is used at a high speed for PWM etc., note that
switching of output results in delay of approx. 10
μ
s.
TYPICAL CHARACTERISTICS
0
P
d
Operating Temperature Ta (C)
Thermal Derating (Absolute Maximum Rating)
2.0
When mounted in board
25
50
75
100
1.5
1.0
0.5
0
RT
RS
RT
K
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