参数资料
型号: M51971FP
元件分类: 运动控制电子
英文描述: BRUSH DC MOTOR CONTROLLER, 0.02 A, PDSO10
封装: 10P2-C
文件页数: 13/13页
文件大小: 387K
代理商: M51971FP
MOTOR SPEED CONTROL
M51971L/FP
MITSUBISHI <CONTROL / DRIVER IC>
Application Circuit Examples
CS : Coupling capacitor for AC amplification
RS, Rf : FG amplifier gain set resistance
RNF, CNF : Filter for noise removal
R
τ, Cτ : Time constant for motor speed setup
CF1, CF2, RF : Phase compensation capacitance and resistance to
stabilize integration and speed control systems
Notes:
1. The signal amplitude of the tacho-generator for set motor
rotating speed must be set to 1 mVP-P or more.
2. FG amplifier gain
ωG : Angle frequency of tacho-generator signal
3. The CS, RS, RNF and CNF values are desirable to be selected as
follows:
(Values omitted)
1+
ω2GCS2(RS+Rf)2
1+
ω2GCS2RS2
CS
≤4.7F
ωG
2
≥ CSRS ≥ ωG
1
RNF CNF
≤ ωG
In the above three examples, the portion over Vf (0.7V) of the
output waveform at pin
is clipped in the built-in waveform clip
diode.
3
Note: The threshold voltage at pin
to GND is approx. 1.9V.
4
I. When the output impedance of the tacho-
generator is low;
III. When the signal amplitude of the tacho-
generator is large;
II. When the output impedance of the tacho-
generator is high and the signal amplitude is
small;
IV. When the input waveform is pulse shape
V. When turning the motor ON/OFF with control
signals;
7
1
8
9
2
3
4
5
6
10
M
G
7
1
8
9
3
4
5
6
10
M
2
G
RS
Rf
RNF
CNF
R
τ
VCC
CS
RF
CF2
CF1
C
τ
M51971L
M51971FP
M : Motor
G : Tacho-generator
R1
M51971L
M51971FP
RNF
CNF
R
τ
C
τ
RF
CF2
CF1
VCC
7
1
8
9
4
5
6
10
M
R
τ
VCC
RF
CF2
CF1
C
τ
M51971L
M51971FP
3
2
Input pulse signal
7
8
9
2
3
4
5
6
10
M
7
8
9
5
6
10
M
RS
Rf
RNF
CNF
R
τ
VCC
CS
RF
CF2
CF1
C
τ
M51971L
M51971FP
When Q1 is set to ON
When Q1 is set to OFF
M51971L
M51971FP
R
τ
C
τ
RF
CF2
CF1
VCC
1
G
: Stops the motor.
: Controls the motor rotating speed.
Q1
Control signal
R1
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相关代理商/技术参数
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