Philips Semiconductors
12 V Voice Coil Motor (VCM) driver and
spindle motor pre-driver combination chip
Product specification
TDA5149G
Table 13 Configuration of the six commutation states in hard-switching mode
STATE
1(3)
2
3
4
5
6
SHIFT REGISTER
111
011
001
000
100
110
H1(1)
ON
ON
−
−
−
−
H2(1)
−
−
ON
ON
−
−
H3(1)
−
−
−
−
ON
ON
L1(2)
−
−
−
PWM
PWM
−
L2(2)
PWM
−
−
−
−
PWM
Note
1. H1, H2 and H3 are the upper power FETs connected to MOT1, MOT2 and MOT3 respectively.
2. L1, L2 and L3 are the lower power FETs connected to MOT1, MOT2 and MOT3 respectively.
3. INIT = 1 means ‘state 1’ situation with PWM stuck in OFF on L2.
L3(2)
−
PWM
PWM
−
−
−
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
VDD
general supply voltage
indefinite time period
VDDD
digital supply voltage
indefinite time period
VDDA
analog supply voltage
indefinite time period
VDDV
supply for VCM DMOS driver
indefinite time period
VCM+
VCM−
ICM+
ICM−
VMOT
Vn
Tstg
Tj(max)
output voltage of the VCM power
stage
output voltage of the VCM power
stage
output current of the VCM power
stage
output current of the VCM power
stage
BEMF comparator input voltage
(pins 4, 7 and 10)
input voltages on other pins
IC storage temperature
maximum junction temperature
current peak <0.5 s
current peak <0.5 s
MIN.
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
−0.7
−0.7
−
−
−0.7
−0.3
−55
−
MAX.
+13.5
+15
+6.0
+7.0
+6.0
+7.0
+13.5
+15
+15
UNIT
V
V
V
V
V
V
V
V
V
+15
V
2.5
A
2.5
A
−
V
−
V
+125
°C
150
°C
1996 May 06
14