L6246 Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
L6246 Datasheet PDF : 12 Pages
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L6246
Typical Application Circuit
Rs 0.2
VOICE COIL
MOTOR
LL
RL
VDD
100nF
10nF
OUT_
42
SENSE_IN- SENSE_IN+
6
5
OUT+ VDD
36
18
C1
38
C2
39
19 VCC
VCC
SENSE_OUT
10
41 VCC
ERR_OUT
8
37 VCC
1K
1M 1K
22µF
100nF
VCTL
VREF
VCC/2
100nF
9
ERR-
1K
VIN_OUT
12
10K
10K
VIN-
13
10K
VIN+
14
10K
VCC/2
15
CPGND
GND
34
7,35,43
L6246
PQFP44
AE W GATE
17
MOTOR START
16
THERMAL SHTD
4
POR
20
10.5V
INT.REG.
FILTER_CAP
2
(*)
FILTER CAPACITORS TO BE SET IN APPLICATION
GATE DRV
44
27
VBEMF
40 VCP
1µF
28
R PARK
51K
21 5VREF
24 5VREFGND
(*)
26 12SEPT
(*)
25 5SSEPT
1µF
22 12SEPT
3
5SSEPT
1µF
32
30
31
29
D95IN268
G
S P322
D FROM SPINDLE
DRIVER
100nF
5VREF
GND
ENABLE
VCM PARK
SPINDLE START
W GATE
Current Control Loop Circuit
VSENSE
VIN
VCC/2 + 10VSENSE
VCC/2 + (RA/RB) (ZC/RC) VIN-10 (ZC/R1) VSENSE
20K
2K
2K
20K
-
+
SENSE
AMPL.
VCC/2
R1
VCC/2
RA
RB
RB
RA
-
+
INPUT
AMPL.
VCC/2
VCC/2 - (RA-RB) VIN
ERROR
+ AMPL.
-
R2
C
R3
RC (=R1)
TO SENSE
-AMPLIFIER +
ZC
1.1K
VCC/2
17.5K
-
RS
+
-
POWER
AMPL.
16.5K
LL
RL
-
LOAD
VL
+
+
POWER
AMPL.
1.1K
VCC/2
D95IN269B
VL=32 ( (ZC/RC) VIN - 10 (ZC/R1) VSENSE )
= ACPW * ACERR ( ACIMP * VIN - ACSENSE * VSENSE )
8/12
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