L6260 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
L6260 Datasheet PDF : 30 Pages
| |||
L6260
MATCAD ANALYSIS OF l6286 VCM CURRENT CONTROL LOOP (High Gain)
(User specified parameters)
Rc : = 240 ⋅ 103
Cc : = 240 ⋅ 10-9
R1 : = 20
L : = 1.1 ⋅ 10-3
Cs : = 100 ⋅ 10-9
Rn : = 75
Vdac : = 40 ⋅ 10-3
Rs : = 0.8
Id
:
=
Vdac
Rs
(Device Parameters)
Compensation resistance
Compensation capacitance
Coil resistance
Coil inductance
Snubber capacitace
Snubber resistance
DAC Voltage
Sense resistance
Output current Id = 0.05
gmn : = 24.2 ⋅ 10-6
Ron : = 3.18 ⋅ 106
Con : = 50 ⋅ 10-12
gm1 : = 1100 ⋅ 10-6
Ro1 : = 1.773 ⋅ 106
Co1 : = 1.6 ⋅ 10-12
gm2 = 0.964 √ Id
VA = 68.7
Ro2
=
VA
Id
Ra : = 420
Csb : = 10.2 ⋅ 10-12
Cdb : = 49 ⋅ 10-12
Cgd : = 11 ⋅ 10-12
Cgs : = 156 ⋅ 10-12
Nulling OTA transconductance, with ± 20% variation
Nulling OTA output resistance, with ± 50% variation
Nulling OTA output capacitance, with ± 10% variation
Main OTA transconductance, with ± 20% variation
Main OTA output resistance, with ± 50% variation
Main OTA output capacitance, with ± 10% variation
FET transconductance, with æ 10% variation gm2 = 0216
Early voltage of FET, with ± 5% variations
FET output resistance Ro2 = 1.374 ⋅ 103
Predriver output resistance, with ± 20% variation
FET source-bulk capacitance, with ± 10% variation
FET drain-bulk capacitance, with ± 10% variation
FET gate-drain capacitance, with ± 10% variation
FET gate source capacitance, with ± 10% variation
1ST STAGE (OTA) TRANSFER FUNCTION:
i: = √ -1
f(n) : = 10n
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
=
2⋅
π
⋅
1
Req
⋅
Co1
fp2 = 4.706 ⋅ 105
fz1 = gmn
2⋅ π ⋅ Con
fz1 = 7.703 ⋅ 104
fzc
=
2⋅
π
⋅
1
Rc
⋅
Cc
fzc = 6.631
Req = Ro1 ⋅ Rc
Ro1 + Rc
Req = 2.114 ⋅ 105
fpc
=
2⋅
π
⋅
(Rc
1
+
Ro1)
⋅
Cc
fpc =0.791
26/30
|
|
Share Link: 