參數(shù)資料
型號(hào): L6208
廠商: 意法半導(dǎo)體
英文描述: FULLY INTEGRATED STEPPER MOTOR DRIVER
中文描述: 完全集成的步進(jìn)電機(jī)驅(qū)動(dòng)器
文件頁數(shù): 13/27頁
文件大?。?/td> 453K
代理商: L6208
13/27
L6208
t
RCRISE
= 600 · C
OFF
Figure 13 shows the lower limit for the on time t
ON
for having a good PWM current regulation capacity. It has to
be said that t
ON
is always bigger than t
ON(MIN)
because the device imposes this condition, but it can be smaller
than t
RCRISE
- t
DT
. In this last case the device continues to work but the off time t
OFF
is not more constant.
So, small C
OFF
value gives more flexibility for the applications (allows smaller on time and, therefore, higher
switching frequency), but, the smaller is the value for C
OFF
, the more influential will be the noises on the circuit
performance.
Figure 12. t
OFF
versus C
OFF
and R
OFF
Figure 13. Area where t
ON
can vary maintaining the PWM regulation.
t
ON
t
ON
t
ON MIN
t
RCRISE
)
>
1.5
μ
s (typ. value)
=
t
DT
>
0.1
1
10
100
1
10
100
1.10
3
1.10
4
Coff [nF]
t
μ
s
R
off
= 100k
R
off
= 47k
R
off
= 20k
0.1
1
10
100
1
10
100
Coff [nF]
t
μ
s
1.5
μ
s (typ. value)
相關(guān)PDF資料
PDF描述
L6208D FULLY INTEGRATED STEPPER MOTOR DRIVER
L6208N FULLY INTEGRATED STEPPER MOTOR DRIVER
L6208PD FULLY INTEGRATED STEPPER MOTOR DRIVER
L6210 DUAL SCHOTTKY DIODE BRIDGE
L6213 SOLENOID DRIVER SWITCH MODE POWER SUPPLY
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