TDA5147CH Datasheet, PDF (20/32 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
Preliminary specification
TDA5147CH
SYMBOL
PARAMETER
CONDITIONS
MIN.
PWM one-shot; pin SPWMTC
I_sk
I_sc
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
0
one-shot off time
external network of R = 68 kΩ 8
and C = 220 pF
t_ON(min)
one-shot minimum on time external network of R = 68 kΩ 1
and C = 220 pF
Current control loop and sense amplifier; pins SISENH and SCOMP
V_i
current sense amplifier
current sense amplifier
0
common mode input
operational over range
voltage
I_SENSE
current sense amplifier
−10
input current
K_SP
voltage ratio between
over sense
4.9
SPWMFLT and SISENH resistance = 0.1 to 1 Ω
V_SENSH
B_WD
output voltage at SENSH for 100% duty factor;
0.324
R_s = 0.33 Ω
for 50% duty factor;
−
R_s = 0.33 Ω
for 5% duty factor; R_s = 0.33 Ω 0
for 0% duty factor; R_s = 0.33 Ω 0
current loop bandwidth for R_s = 0.33 Ω, L_motor = 1 mH, 3
SPWMFLT to motor current R_motor = 12.0 Ω
TYP.
850
−12
2.56
0.1
10
−
−
−
5.0
0.342
0.174
0.018
0
5
MAX.
1 100
−
3.0
0.2
12
−
3.0
−
5.1
0.36
−
0.026
1.0
−
UNIT
µA
µA
V
V
µs
µs
V
µA
V/V
V
V
V
mV
kHz
1997 Jul 09
20