TDA5147K Datasheet, PDF (17/32 Pages) NXP Semiconductors – 12 V Voice Coil Motor VCM driver and spindle motor drive combination chip

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)
I_sink
I_source
V_thST
V_thEND
t_off
output sink current
V_o = 3 V
600
output source current
V_o = 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
t_on(min)
one-shot minimum on time external network of R = 68 kΩ 1
and C = 220 pF
850
−12
2.56
0.1
10
−
Current control loop and sense amplifier; pins 23 and 31 (SCOMP and SISENH)
V_i
current sense amplifier
current sense amplifier
0
−
common mode input voltage operational over range
I_SENSE
current sense amplifier input
current
−10
−
V_ratio
voltage ratio between
over sense resistance = 0.1 4.9
5.0
SPWMFLT and SISENH to 1 Ω
V₃₁
output voltage at SENSH for 100% duty factor;
(pin 31)
R_s = 0.33 Ω; note 1
0.317 0.335
for 50% duty factor;
−
0.174
R_s = 0.33 Ω
for 5% duty factor;
0
0.018
R_s = 0.33 Ω; note 2
for 0% duty factor;
0
0
R_s = 0.33 Ω; note 3
B_WD
current loop bandwidth for R_s = 0.33 Ω, L_motor = 1 mH, −
1
SPWMFLT to motor current R_motor = 12.0 Ω
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