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PDF TDA5147CH Data sheet ( Hoja de datos )
| Número de pieza | TDA5147CH | |
| Descripción | 12 V Voice Coil Motor VCM driver and spindle motor drive combination chip | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
TDA5147CH
12 V Voice Coil Motor (VCM) driver
and spindle motor drive
combination chip
Preliminary specification
File under Integrated Circuits, IC11
1997 Jul 09
1 page  
Philips Semiconductors
12 V Voice Coil Motor (VCM) driver and
spindle motor drive combination chip
Preliminary specification
TDA5147CH
handbook, full pagewidth
BSTCP1
41
VCC5
BSTCP2
30
TEMP
58
BSTFLT 29
UPPER
BOOSTER
to the VCM
output
stages
lcompare
SCNTL1 20
SCNTL2 21
SCNTL3 22
LOGIC
DECODER
VCC5
SMODE1 13
VCC5
U.H
U.L
V.H THERMAL
V.L SWITCH
W.H
W.L
brake
disable
TDA5147CH
SPWMTC
24
PWM/LIN
PWM
U.H
U.L
V.H
V.L
from PORN block
VCCS12
disable
DRIVER
disable
DRIVER
brake
disable
DRIVER
disable
DRIVER
brake
28 SHPWR3
5 SHPWR2
39 SDRVU
40 SHPWR1
Cclamp
23 SDRVV
SCOMP 37
COMP
PWM/LIN
Iset
Isense
control
amplifier
W.H
W.L
disable
DRIVER
disable
DRIVER
brake
10 SDRVW
SIPWM 44
SPWMFLT 38
PWM
DECODER
FILTER
Iset
Vref
SISINK1, SISINK2
COMP
SDRVU
25 SDRVN
COMP
SDRVV
SISENL 46
Isense
SISENH 45
AMP
Icompare
Rsense
COMP
multiplexer
COMP
SDRVW
27 SENV
26 SENU
18 SENWIS
19
SISINK2
42
SISINK1
6, 7
GNDSUBB
36
VCCS12
8
VCCA12
9
VCC5
54, 55, 56
GNDV
MGG844
Fig.2 Block diagram of spindle motor drivers.
1997 Jul 09
5
5 Page 
Philips Semiconductors
12 V Voice Coil Motor (VCM) driver and
spindle motor drive combination chip
Preliminary specification
TDA5147CH
DISABLE VCM DRIVERS
With the VPCNTL signal at 0.5VCC the VCM drivers are
disabled while the rest of the circuits remain enabled.
A sleep mode is initiated when the spindle and VCM are
disabled (this places the TDA5147CH in its lowest power
setting).
ACTUATOR PARK
Retracting the actuator can be accomplished by driving
VPCNTL LOW in conjunction with either the spindle turning
or a brake voltage has been applied. An adjustable retract
voltage of 1.2 V (max.) is applied between the VCMN and
VCMP outputs. The retract circuit obtains its retract current
from the spindle BEMF (pins SHPWR2 and SHPWR3).
The retract voltage is determined by two external resistors.
One end is connected to pin VCMN and the other to ground.
The common point is connected to pin RETADJ (see Fig.8
for additional information).
The calculation of VRETRACT is as follows:
VRETRACT
=
VBE
×
R-----1---R--+---1--R-----2--
+
5----0-R----k2---Ω---
VBE = 0.65 V at 25 °C and ∆VBE/∆T = −2 mV/°C, 50 kΩ
can vary by ±30%. It should be noted that R2 has to be less
than 10 kΩ.
Pin RETADJ can be pulled to ground by applying 0.7 V
(VBE) on pin BRKTC. This is used to perform spindle brake
during power down.
When pin 35 (RETADJ) is pulled to ground, no regulation of
the VCMN is taking place, but the VCMP output is still kept
LOW. In that case, the SHPWR2 and SHPWR3 lines are
loaded with the VCM motor by means of an internal MOS
transistor.
handbook, full pagewidth
Vref
VIPWMH
LEVEL
CONVERTOR
SUM
UNITY
GAIN
LOW-PASS
VFLTOUT
VIPWML
LEVEL
CONVERTOR
32 : 1
ATTENUATION
MBH019
Fig.5 Block diagram of the VCM driver PWM filter.
Table 3 Booster, spindle drivers, comparator, decoder, amplifier and filter modes
FUNCTION
Spindle enable
Spindle disable
PORN LOW
Sleep
UPPER
BOOSTER
ON
ON
OFF
OFF
UPPER
DRIVERS
ON
ON
OFF
OFF
LOWER
DRIVERS
ON
ON
ON
ON
COMPARATOR
ON
ON
ON
ON
CONTROL
AMPLIFIER
ON
ON
OFF
OFF
1997 Jul 09
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TDA5147CH.PDF ] | |
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