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L6229Q Fiches technique(PDF) 23 Page - STMicroelectronics

No de pièce L6229Q
Description  DMOS driver for three-phase brushless DC motor
PDF  28 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6229Q Fiches technique(HTML) 23 Page - STMicroelectronics

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L6229Q
Application information
Doc ID 15209 Rev 3
23/28
Figure 23.
Typical application
6.1
Output current capability and ic power dissipation
In Figure 24 is shown the approximate relation between the output current and the IC power
dissipation using PWM current control.
For a given output current the power dissipated by the IC can be easily evaluated, in order to
establish which package should be used and how large must be the on-board copper
dissipating area to guarantee a safe operating junction temperature (125 °C maximum).
Figure 24.
IC power dissipation versus output power
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
9
10111213141516
32
31
30
29
28
27
26
25
GND
NC
H1 H2 H3
H1
H2
H3
NC
NC
NC
NC
NC
NC
Cp
D1
D2
Vs
8 ÷ 52 VDC
POWER
GROUND
SIGNAL
GROUND
+
_
M
COFF
ROFF
CPUL
RPUL
C3
R4
R2
R3
RDD
ENABLE
CREF1
CREF1
REN
R1
CEN
VREF
Cboot
C1
C2
VCP
OUT2
VSA
GND
VSB
OUT3
NC
VBOOT
to SENSEB
to EN
HALL
SENSOR
THREE-PHASE MOTOR
RH1
RH2
RH3
+5V
+5V
No PWM
f
SW = 30 kHz (slow decay)
Test Condition s:
Supply Voltage = 24 V
0
0.25
0.5 0.75
1
1.25
1.5
0
2
4
6
8
10
P
I
OUT
[A]
D [W]
IOUT
I1
I3
I2
IOUT
IOUT



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