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Número de pieza TDA5149G
Descripción 12 V Voice Coil Motor VCM driver and spindle motor pre-driver combination chip
Fabricantes NXP Semiconductors 
Logotipo NXP Semiconductors Logotipo



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INTEGRATED CIRCUITS
DATA SHEET
TDA5149G
12 V Voice Coil Motor (VCM) driver
and spindle motor pre-driver
combination chip
Product specification
File under Integrated Circuits, IC11
1996 May 06

1 page




TDA5149G pdf
Philips Semiconductors
12 V Voice Coil Motor (VCM) driver and
spindle motor pre-driver combination chip
Product specification
TDA5149G
PINNING
SYMBOL
PIN I/O
DESCRIPTION
CAPY
1 I/O charge pump capacitor
MOT0
2 I motor centre tap input
H1 3 O driver output to gate of upper power FET 1
MOT1
4 I back EMF comparator input 1
L1 5 O driver output to gate of lower power FET 1
H2 6 O driver output to gate of upper power FET 2
MOT2
7 I back EMF comparator input 2
L2 8 O driver output to gate of lower power FET 2
H3 9 O driver output to gate of upper power FET 3
MOT3
10 I back EMF comparator input 3
L3 11 O driver output to gate of lower power FET 3
IDRIVE
12 I adjustment for output stage drive current
SPINSENSEH
13
I positive spindle sense amplifier input
SPINSENSEL
14
I negative spindle sense amplifier input
SISENS
15 O spindle sense amplifier output
AGND
Iref
SINTIN
16 general analog ground; note 1
17 O reference current generator output
18 I negative integrator input
ISPIN
19 I positive integrator input, average current adjustment
SICOMP
20 O integrator output
RPOS
21 I duty cycle modulator input
CSS1
22 I/O soft switching capacitor 1
CSS2
23 I/O soft switching capacitor 2
STOSC
24 I/O sawtooth oscillator capacitor
SCANOUT
25 O test output
PORDELAY
VDDA1
POR5ADJ
POR12ADJ
AMPIN
26 I/O power-on reset delay capacitor (active LOW)
27 analog supply voltage 1 (+5 V)
28 O adjustment of POR threshold (for +5 V)
29 O adjustment of POR threshold (for +12 V)
30 I negative input of the uncommitted operational amplifier
AMPIN+
31 I positive input of the uncommitted operational amplifier
PGND1
AMPOUT
32 power ground 1 for VCM DMOS; note 1
33 O uncommitted operational amplifier output
RESETP
34 O power-on reset digital output with passive pull-up resistor
RESETA
35 O power-on reset digital output with active pull-up resistor
VCM
TEMPMON
36 O negative output voltage of the VCM power stage
37 O temperature monitor output
CLAMP
38 I/O clamp capacitor used for head retraction
VDDV
VCMIN2
39 power supply for VCM DMOS driver (+12 V)
40 I switchable VCM control input voltage
1996 May 06
5

5 Page





TDA5149G arduino
Philips Semiconductors
12 V Voice Coil Motor (VCM) driver and
spindle motor pre-driver combination chip
Product specification
TDA5149G
Table 1 Serial port registers
REGISTER
ADDRESSED
Reg # 0
Reg # 1
Reg # 2
Reg # 3
Reg # 4
Reg # 5
Reg # 6
Reg # 7
DATA4
INIT
not used
not used
not used
STARTUP_4
WATCHDOG_4
not used
BLANK_4
DATA3
COMMCLCK
HARD_SW
not used
not used
STARTUP_3
WATCHDOG_3
not used
BLANK_3
DATA2
SPINMODE
LHOLD
VGAINSEL
PRESCALER_2
STARTUP_2
WATCHDOG_2
COMDELIM_2
BLANK_2
DATA1
SDISABLE
LACTIVATE
VCM_CTRL_1
PRESCALER_1
STARTUP_1
WATCHDOG_1
COMDELIM_1
BLANK_1
DATA0
SBRAKE
SLEEP
VCM_CTRL_0
PRESCALER_0
STARTUP_0
WATCHDOG_0
COMDELIM_0
BLANK_0
Table 2 REG # 0: address 000; DATA = | INIT | COMMCLK | SPINMODE | SDISABLE | SBRAKE |
DATA BIT
INIT
COMMCLK
SPINMODE
SDISABLE
SBRAKE
RESET
STATE
1
0
0
1
0
DESCRIPTION
initializes the three bits commutation shift register in state 1 (see Table 13)
commutation clock in stepper mode (one commutation every LOW-to-HIGH transition)
stepper/BEMF detection mode selection. SPINMODE = 1 means stepper motor mode
in hard-switching configuration
logic 1 sets the pre-drivers outputs LOW so that the spindle motor coils are in the
high-impedance state
logic 1 sets the lower pre-driver outputs HIGH and the upper pre-driver outputs LOW
so that the spindle motor coils are shorted to ground
Table 3 REG # 1: address 001; | not used | HARD_SW | LHOLD | LACTIVE | SLEEP |
DATA BIT
HARD_SW
LHOLD
LACTIVE
SLEEP
RESET
STATE
0
0
0
0
DESCRIPTION
logic 1 disables the soft switching circuitry, which means PWM is applied on the lower
FETs only.This mode is also forced in stepper motor mode.
logic 1 turns on the hold current supplied by VDDD through the latch. It is ignored if
LACTIVE = 1
logic 1 turns on the activate current supplied by VDD through the latch
logic 1 disables spindle, VCM and latch driver outputs. The whole analog circuitry is
turned off except the reference bandgap and the voltage monitors. The uncommitted
operational amplifier is also cut off.
Table 4 REG # 2: address 010; | not used | not used | VGAINSEL | VCM_CTRL_1 | VCM_CTRL_0 |
DATA BIT
VGAINSEL
VCM_CTRL_1
VCM_CTRL_0
RESET
STATE
1
1
1
DESCRIPTION
logic 1 turns on the switch between VCMIN1 and VCMIN2, resulting in a higher gain for the
transconductance of the VCM closed loop
see Table 5
see Table 5
1996 May 06
11

11 Page







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