L6235QTR STMicroelectronics, L6235QTR Datasheet - Page 13

• Manufacturer Part Number: L6235QTR
• Description: Motor / Motion / Ignition Controllers & Drivers DMOS 3-Phase Brushless DC Motor
• Manufacturer: STMicroelectronics

Specifications of L6235QTR

• Product Category: Motor / Motion / Ignition Controllers & Drivers
• Rohs: yes

L6235Q
Figure 12
regulation capacity. It should be mentioned that t
the device imposes this condition, but it can be smaller than t
the device continues to work but the OFF time t
Therefore, a small C
time and, therefore, higher switching frequency), but, the smaller the value for C
more influential the noises on the circuit performance.
Figure 11. t
shows the lower limit for the ON time t
OFF
vs. C
1 . 10
1 . 10
100
OFF
10
1
4
3
0.1
OFF
value gives more flexibility to the applications (allows smaller ON
and R
⎧
⎪
⎨
⎪
⎩
Doc ID 018997 Rev 2
t
t
ON
ON
OFF
>
>
R
t
off
RCRISE
t
t
ON MIN
RCRISE
= 20kΩ
(
1
R
)
=
–
off
Coff [nF]
t
600 C
DT
= 47kΩ
OFF
ON
ON
⋅
=
for having a good PWM current
is not more constant.
is always bigger than t
R
1.5μs typ
OFF
off
= 100kΩ
10
(
RCRISE
)
- t
DT
Circuit description
. In this last case
100
ON(MIN)
OFF
because
, the
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