IC DRIVER FULL BRIDGE DUAL 24DIP

L6227N

Manufacturer Part NumberL6227N
DescriptionIC DRIVER FULL BRIDGE DUAL 24DIP
ManufacturerSTMicroelectronics
TypeH Bridge
L6227N datasheet
 


Specifications of L6227N

Input TypeNon-InvertingNumber Of Outputs4
On-state Resistance730 mOhmCurrent - Output / Channel1.4A
Current - Peak Output2.8AVoltage - Supply8 V ~ 52 V
Operating Temperature-25°C ~ 125°CMounting TypeThrough Hole
Package / CasePowerSSO-24Operating Supply Voltage8 V to 52 V
Supply Current1.4 AMounting StyleThrough Hole
For Use With497-6817 - EVAL BOARD FOR L6227QLead Free Status / RoHS StatusLead free / RoHS Compliant
Other names497-3648  
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L6227
Figure 8. Output Current Regulation Waveforms
I
OUT
V
REF
R
SENSE
V
SENSE
V
REF
0
V
RC
5V
2.5V
ON
SYNCHRONOUS RECTIFICATION
OFF
D02IN1351
Figure 9 shows the magnitude of the Off Time t
culated from the equations:
t
= 0.6 · R
· C
RCFALL
OFF
OFF
t
= t
+ t
= 0.6 · R
OFF
RCFALL
DT
where R
and C
are the external component values and t
OFF
OFF
20K
R
100K
OFF
0.47nF
C
100nF
OFF
t
= 1µs (typical value)
DT
Therefore:
t
= 6.6µs
OFF(MIN)
t
= 6ms
OFF(MAX)
These values allow a sufficient range of t
The capacitor value chosen for C
Rise Time t
will only be an issue if the capacitor is not completely charged before the next time the
RCRISE
monostable is triggered. Therefore, the on time t
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t
OFF
1 s t
BLANK
Slow Decay
t
RCRISE
t
RCFALL
1 s t
DT
B
C
D
versus C
and R
OFF
OFF
· C
+ t
OFF
OFF
DT
DT
to implement the drive circuit for most motors.
OFF
also affects the Rise Time t
OFF
, which depends by motors and supply parameters, has to
ON
t
t
ON
OFF
1 s t
BLANK
Slow Decay
t
RCRISE
t
RCFALL
1 s t
DT
A
B
C
D
values. It can be approximately cal-
OFF
is the internally generated Dead Time with:
of the voltage at the pin RCOFF. The
RCRISE