L6235N STMicroelectronics, L6235N Datasheet - Page 10
![IC DRIVER 3PHASE MOTOR 24-PWRDIP](/photos/7/45/74572/l6235n_sml.jpg)
L6235N
Manufacturer Part Number
L6235N
Description
IC DRIVER 3PHASE MOTOR 24-PWRDIP
Manufacturer
STMicroelectronics
Type
Driverr
Datasheet
1.L6235D013TR.pdf
(25 pages)
Specifications of L6235N
Applications
DC Motor Driver, Brushless (BLDC), 3 Phase
Number Of Outputs
1
Current - Output
5.6A
Voltage - Supply
12 V ~ 52 V
Operating Temperature
-25°C ~ 125°C
Mounting Type
Through Hole
Package / Case
24-DIP (0.300", 7.62mm)
Operating Supply Voltage
7 V to 52 V
Supply Current
0.006 A
Mounting Style
Through Hole
Motor Type
Three Phase DC Brushless
No. Of Outputs
3
Output Current
7.1A
Output Voltage
52V
Supply Voltage Range
8V To 52V
Driver Case Style
DIP
No. Of Pins
24
Rohs Compliant
Yes
For Use With
497-4935 - BOARD MOTOR BRUSHLESS DC L6235
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-5353-5
L6235N
L6235N
L6235
Figure 8. Output Current Regulation Waveforms
Figure 9 shows the magnitude of the Off Time t
culated from the equations:
where R
Therefore:
These values allow a sufficient range of t
The capacitor value chosen for C
Rise Time t
monostable is triggered. Therefore, the On Time t
be bigger than t
can not be smaller than the minimum on time t
10/25
t
t
20K
0.47nF
t
t
t
t
RCFALL
OFF
DT
OFF(MIN)
OFF(MAX)
RCRISE
t
t
R
V
ON
OFF
ON
V
SENSE
SENSE
I
= 1µs (typical value)
OUT
V
REF
2.5V
OFF
V
= t
ON
5V
REF
0
RC
RCRISE
and C
RCFALL
t
t
= 600 · C
= 0.6 · R
R
ON MI N
RCRISE
= 6.6µs
RCRISE
C
OFF
= 6ms
SYNCHRONOUS RECTIFICATION
OFF
D02IN1351
OFF
will only be an issue if the capacitor is not completely charged before the next time the
+ t
100K
–
OFF
are the external component values and t
for allowing a good current regulation by the PWM stage. Furthermore, the On Time t
OFF
100nF
DT
=
t
DT
1.5 s (typ. value)
= 0.6 · R
· C
OFF
OFF
OFF
also affects the Rise Time t
· C
OFF
OFF
B
to implement the drive circuit for most motors.
ON(MIN)
+ t
OFF
Slow Decay
t
DT
RCFALL
ON
1 s t
t
versus C
1 s t
t
RCRISE
OFF
, which depends by motors and supply parameters, has to
C
.
BLANK
DT
OFF
D
DT
and R
RCRISE
t
ON
is the internally generated Dead Time with:
A
OFF
B
of the voltage at the pin RCOFF. The
values. It can be approximately cal-
Slow Decay
t
RCFALL
1 s t
t
1 s t
t
RCRISE
OFF
C
BLANK
DT
D
ON