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參數(shù)資料
| 型號： | TDA5147CH |
| 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： | DISK DRIVE MOTOR CONTROLLER, PQFP64 |
| 文件頁數(shù)： | 10/32頁 |
| 文件大?。?/td> | 196K |
| 代理商： | TDA5147CH |
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1997 Jul 09
10
Philips Semiconductors
Preliminary specification
12 V Voice Coil Motor (VCM) driver and
spindle motor drive combination chip
TDA5147CH
E
NABLE
VCM
DRIVERS
When V
PCNTL
equals V
CC5
, the VCM drivers are controlled
by V
IPWMH
and V
IPWML
. Their duty factor is converted to a
voltage at pin V
FLTOUT
. At a 100% duty factor the V
FLTINP
voltage is approximately 1 V above V
refout
. At a 0% duty
factor the V
FLTINP
voltage is approximately 1 V below
V
refout
. At a 50% duty factor, the voltage level is equal to
V
refout
(typically 4 V). The V
FLTINP
voltage is amplified,
filtered and output at V
FLTOUT
. The voltage at V
FLTOUT
varies between
±
2 V about V
refout
. The V
FLTOUT
voltage, in
conjunction with the sense resistor amplifier, drives the
two VCM drivers as illustrated in Fig.4. The equation
describing the transconductance from V
FLTINP
to I
coil
is:
In a typical application:
I
V
FLTINP
V
refout
–
The transconductance is variable by selecting external
resistors R2/R1 and sense resistors RS.
G
m
I
V
VFLTINP
V
refout
–
-------------------------------------------
2I
V
VFLTOUT
V
refout
R1
–
(
)
----------------------------------------------------
2
gain
R2
RS
---1
×
×
×
=
=
=
--------------------------------------------
2
4
10 k
6.6 k
×
0.33
----1
×
1 A/V
=
=
Fig.4 Transconductance model.
handbook, full pagewidth
V1
V1
61
4R
R
R
4R
R
0.5 VCCV12
R
51
59
Vrefout
RS
60
57
Vrefout
45
R2
R1
R
4
Vrefout
BUFFER
PWM
DEC
R
3
2
1
MGG846
M
voice
coil
motor
ICOIL
VISENL
VCMN
VCMP
VISENH
VISENS1
VCMINP
VFLTINP
VIPWMH
VIPWML
VFLTOUT
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相關代理商/技術參數(shù) |
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|---|---|
| TDA5147K | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:12 V Voice Coil Motor VCM driver and spindle motor drive combination chip |
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