參數(shù)資料
型號： TDA5147K
廠商： NXP SEMICONDUCTORS
元件分類： 運動控制電子
英文描述： 12 V Voice Coil Motor VCM driver and spindle motor drive combination chip
中文描述： VOICE COIL MOTOR CONTROLLER, PQCC52
文件頁數(shù)： 2/32頁
文件大?。?/td> 154K
代理商： TDA5147K
1996 Jul 26
2
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and
spindle motor drive combination chip
TDA5147K
FEATURES
Spindle motor driver
Internal 1 A peak current power drivers
Low R
ds(on)
1
max total for high, low and isolation
drivers
Induction sense start-up option
External current sense resistor
Soft switching on both upper and lower drivers
Programmable linear or PWM spindle mode
Provide spindle active dynamic braking mode.
Voice coil motor driver
0.8 Amp VCM power driver
Maximum of 1 V drop across the power driver at 0.8 A
External current sense resistor, with sense amplifier
External current control loop compensation
15 kHz (typ.) VCM current control loop bandwidth
Three mode operation: enable VCM, retract, and
disable.
Power monitor and retract circuit
+5 and +12 V power monitor threshold accuracy
±
2%
Hysteresis on both power monitor comparators
Precision internal voltage generator
±
2%
Buffered reference voltage output pin
Retract circuit operates down to 2 V
Internal thermal sense circuitry with an over temperature
shut down option
Internal boost voltage generator
Sleep mode.
APPLICATIONS
Hard disk drive for PC products.
GENERAL DESCRIPTION
The TDA5147K is an ASIC combination chip that includes
the following functions; spindle motor drive, voice coil
motor drive, retract, and power-on. The circuit is contained
in a 52-pin PLCC package.
The TDA5147K (see Fig.1) is controlled by a custom
digital ASIC. The custom ASIC provides the necessary
commutation sequences for the spindle drivers via the
SCNTL1, SCNTL2 and SCNTL3 inputs. Spindle speed is
monitored by comparator outputs SENU, SENV and
SENWIS. Motor speed control is accomplished by a PWM
signal (input at the SIPWM pin).
Control of the VCM circuits is via the V
IPWMH
and V
IPWML
input signals. These two inputs provide control of the coil
current. The V
ISENSE2
output signal can be used to monitor
the voice coil current.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
Supply voltage
V
CCA1
V
CCA2
analog supply voltage 1
analog supply voltage 2
4.5
10.8
5.0
12.0
5.5
13.2
V
V
Drivers
I
spin(max)
I
VCM(max)
maximum spindle current
maximum voice coil motor current
1
0.8
A
A
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA5147K
PLCC52
plastic leaded chip carrier; 52 leads
SOT238-2
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