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TDA5147K Ver la hoja de datos (PDF) - Philips Electronics

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TDA5147K Datasheet PDF : 32 Pages
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Philips Semiconductors
12 V Voice Coil Motor (VCM) driver and
spindle motor drive combination chip
Product specification
TDA5147K
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP.
PWM one-shot; pin 15 (SPWMTC)
Isink
Isource
VthST
VthEND
toff
output sink current
Vo = 3 V
600
output source current
Vo = 1 V
threshold voltage start level voltage for discharging
2.0
threshold voltage end level voltage for charging
one-shot off time
external network of R = 68 kΩ −
and C = 220 pF
ton(min)
one-shot minimum on time external network of R = 68 k1
and C = 220 pF
850
12
2.56
0.1
10
Current control loop and sense amplifier; pins 23 and 31 (SCOMP and SISENH)
Vi
current sense amplifier
current sense amplifier
0
common mode input voltage operational over range
ISENSE
current sense amplifier input
current
10
Vratio
voltage ratio between
over sense resistance = 0.1 4.9
5.0
SPWMFLT and SISENH to 1
V31
output voltage at SENSH for 100% duty factor;
(pin 31)
Rs = 0.33 ; note 1
0.317 0.335
for 50% duty factor;
0.174
Rs = 0.33
for 5% duty factor;
0
0.018
Rs = 0.33 ; note 2
for 0% duty factor;
0
0
Rs = 0.33 ; note 3
BWD
current loop bandwidth for Rs = 0.33 , Lmotor = 1 mH,
1
SPWMFLT to motor current Rmotor = 12.0
Notes
1. Maximum current will be activated at 100% duty factor.
2. 5% duty factor guarantees current output.
3. Zero duty factor guarantees zero current output.
MAX.
1 100
3.0
0.2
3.0
5.1
0.353
0.026
1.0
UNIT
µA
µA
V
V
µs
µs
V
µA
V/V
V
V
V
mV
kHz
1996 Jul 26
17

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