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參數(shù)資料
| 型號： | L6260 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | DISK DRIVE MOTOR CONTROLLER, 1.5 A, PQFP64 |
| 封裝： | TQFP-64 |
| 文件頁數(shù)： | 19/30頁 |
| 文件大?。?/td> | 440K |
| 代理商： | L6260 |
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MATCAD ANALYSIS OF l6286 VCM CURRENT CONTROL LOOP (High Gain)
(User specified parameters)
Rc : = 240
103
Compensation resistance
Cc : = 240
10-9
Compensation capacitance
R1 : = 20
Coil resistance
L : = 1.1
10-3
Coil inductance
Cs : = 100
10-9
Snubber capacitace
Rn : = 75
Snubber resistance
Vdac : = 40
10-3
DAC Voltage
Rs : = 0.8
Sense resistance
Id : =
Vdac
Rs
Output current Id = 0.05
(Device Parameters)
gmn : = 24.2
10-6
Nulling OTA transconductance, with
± 20% variation
Ron : = 3.18
106
Nulling OTA output resistance, with
± 50% variation
Con : = 50
10-12
Nulling OTA output capacitance, with
± 10% variation
gm1 : = 1100
10-6
Main OTA transconductance, with
± 20% variation
Ro1 : = 1.773
106
Main OTA output resistance, with
± 50% variation
Co1 : = 1.6
10-12
Main OTA output capacitance, with
± 10% variation
gm2 = 0.964
√ Id
FET transconductance, with 10% variation gm2 = 0216
VA = 68.7
Early voltage of FET, with
± 5% variations
Ro2 =
VA
Id
FET output resistance Ro2 = 1.374
103
Ra : = 420
Predriver output resistance, with
± 20% variation
Csb : = 10.2
10-12
FET source-bulk capacitance, with
± 10% variation
Cdb : = 49
10-12
FET drain-bulk capacitance, with
± 10% variation
Cgd : = 11
10-12
FET gate-drain capacitance, with
± 10% variation
Cgs : = 156
10-12
FET gate source capacitance, with
± 10% variation
1ST STAGE (OTA) TRANSFER FUNCTION:
i: =
√ -1
f(n) : = 10
n
S(n) : = 2
i π 10n
n : = 2, 2.01,
7
A1: = gmn
Ron gm1 Ro1 A1 = 1.501 105
fp1
=
1
2
π Ron Con
fp1 = 1.001
103
fp2
=
1
2
π Req Co1
fp2 = 4.706
105
fz1
=
gmn
2
π Con
fz1 = 7.703
104
fzc
=
1
2
π Rc Cc
fzc = 6.631
Req
=
Ro1
Rc
Ro1
+ Rc
Req = 2.114
105
fpc
=
1
2
fpc =0.791
L6260
26/30
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