參數(shù)資料
型號(hào): IR3220S
廠商: International Rectifier
英文描述: FULLY PROTECTED H-BRIDGE FOR D.C. MOTOR
中文描述: 充分保護(hù)H型直流電橋
文件頁數(shù): 6/15頁
文件大?。?/td> 558K
代理商: IR3220S
IR3220S
6
WWW.IRF.COM
In addition, the soft-start sequence pro-
vides a smooth motion of the window.
Torque or speed controls are also
achievable without any micro-control-
ler. With a few additional components,
the IR 3220S can be the ‘ ’ power stage‘ ’
of an overall analog control loop. The
SS pin is then used as the PWM duty
cycle input (continuous switching op-
eration requires high cooling capabil-
ity)
For actuators, the PWM Soft Start sequence helps reduce the speed before reaching the end switches. There-
fore, the braking time is very short and the actuator final position is then accurate and repeatable as shown
hereunder. Mechanical stops under torque control are also possible by controlling the motor current through
the PWM duty cycle.
+Bat
-Bat
IR 3220
Dg
In1
In2
ss
IRF 7484
IRF 7484
μ
P
Shunt
When an obstacle is encountered, the uP
controls the torque thanks to the SS pin.
braking
+ Vcc
DG
D D D D
IRF7484
G
D D D D
G
S S S
S S S
IN 1
IN 2
DG
G1
G2
M2 M2 M2
M1 M1 M1
Vcc Vcc Vcc Vcc
GND
IR 3220
Rev
Fwd
100 nF
1000 uF
IRF7484
SS
Vrc
Gnd
C
R1
R2
Fwd
Rev
speed
motion
braking
Rev
Fwd
Soft-Start
( PWM )
Low Speed
( PWM )
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