參數(shù)資料
型號(hào)： LV8057GR
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： STEPPER MOTOR CONTROLLER, 0.6 A, QCC28
封裝： 3.50 X 3.50 MM, VCT-28
文件頁(yè)數(shù)： 8/25頁(yè)
文件大?。?/td> 258K
代理商： LV8057GR
LV8057GR
No.A1027-16/25
The PWM Frequency Setting
This IC outputs the PWM signal formed by internal oscillator between the pins OUT3 and OUT6.
The frequency of this PWM signal can be selected from four stages of 60kHz, 85kHz, 120kHz and 170kHz.
Select the frequency in consideration of the motor characteristics, the resonant frequency of the set and so on.
The PWM mode Setting
When the PWM signal is output, either between Charge and Brake (Slow Decay) or between Charge and Standby (Fast
Decay) is repeated.
The output transistor function is shown by the following FIG when the direction of current is defined from OUTA to
OUTB as Charge.
[Reference Data]
The coil current value is shown in the following graph. The measurement condition is as follows.
● VB1 is 5.0V.
● The coil resistance RL is 20Ω.
0
200
150
100
50
250
50
70
80
90
60
100
PWM duty – %
Coil
current
–
m
A
Slow
decay
Fast
decay
VB1
ON
OFF
L1
U1
OUTA
L2
U2
OUTB
VB1
OFF
L1
U1
OUTA
L2
U2
OUTB
VB1
ON
OFF
L1
U1
OUTA
L2
U2
OUTB
(Charge)
(Slow Decay)
(Fast Decay)
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