L6235QTR STMicroelectronics, L6235QTR Datasheet - Page 23

• 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
5
Application information
A typical application using L6235Q is shown in
application are shown in
200 nF should be placed between the power pins (VS
L6235Q to improve the high frequency filtering on the power supply and reduce high
frequency transients generated by the switching. The capacitors (C
EN input to ground sets the shutdown time when an overcurrent is detected (see
Section
to the sensing resistors R
sense resistors should be non-inductive resistors to minimize the di/dt transients across the
resistor. To increase noise immunity, unused logic pins are best connected to 5 V (high logic
level) or GND (low logic level) (see
signal ground separated on the PCB.
Table 7.
4.7). The two current sensing inputs (SENSE
Component values for typical application
R
Component
H1,
R
C
C
C
C
R
C
R
SENSE
C
R
R
R
BOOT
REF1
REF2
C
R
C
C
C
D
D
R
R
R
R
OFF
OFF
PUL
PUL
DD
EN
EN
H2,
1
2
3
P
1
2
1
2
3
4
P
Table
SENSE
R
H3
Doc ID 018997 Rev 2
7. A high quality ceramic capacitor (C
with a trace length as short as possible in the layout. The
Section
2). It is recommended to keep power ground and
Figure
A
A
23. Typical component values for the
and SENSE
and VS
B
) and ground near the
1N4148
1N4148
100 uF
100 nF
220 nF
220 nF
100 nF
100 kΩ
5.6 nF
100 Ω
33 kΩ
47 kΩ
10 kΩ
Value
10 nF
33 nF
10 nF
5K6Ω
1K8Ω
4K7Ω
Application information
1 MΩ
0.3 Ω
1 KΩ
1 nF
EN
B
2
) should be connected
) in the range of 100 to
) connected from the
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