L6235QTR STMicroelectronics, L6235QTR Datasheet - Page 19

• 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 19. Overcurrent protection simplified schematic
Figure 20
recovering normal operation can be easily programmed by means of the accurate
thresholds of the logic inputs. It is affected by both C
reported in
overcurrent has been detected, depends only on the C
Figure
C
the value of C
delay time and the R
The resistor R
values for R
disable time.
μC or LOGIC
EN
V
DD
is also used for providing immunity to pin EN against fast transient noises. Therefore
22.
R
C
EN
EN
shows the overcurrent detection operation. The disable time t
Figure
EN
DIAG
EN
EN
EN
and C
should be chosen as big as possible according to the maximum tolerable
should be chosen in the range from 2.2 kΩ to 180 kΩ. Recommended
21. The delay time t
TO GATE
40Ω TYP.
R
LOGIC
DS(ON)
EN
EN
POWER SENSE
value should be chosen according to the desired disable time.
are respectively 100 kΩ and 5.6 nF which allow to obtain 200 µs
OPEN-DRAIN
INTERNAL
1 cell
COMPARATOR
Doc ID 018997 Rev 2
OCD
HIGH SIDE DMOS
POWER DMOS
OVER TEMPERATURE
n cells
DELAY
I
1
OUT
I
1
/ n
1
I
I
I
1
REF
REF
+I
before turning off the bridge, when an
VS
2
+
/ n
A
OUT
I
2
/ n
EN
2
POWER DMOS
I H
I
2
G
EN
H
n cells
and R
S
D I
value. Its magnitude is reported in
E
D
M
O
EN
S
POWER SENSE
values and its magnitude is
I
3
1 cell
/ n
OUT
DISABLE
Circuit description
3
POWER DMOS
I
3
VS
n cells
B
I H
G
H
before
S
D I
E
POWER SENSE
D
M
AM02563v1
O
1 cell
S
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