Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

ML4411 Datasheet(PDF) 11 Page - Micro Linear Corporation

No. de pieza ML4411
Descripción Electrónicos  Sensorless Spindle Motor Controller
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  MICRO-LINEAR [Micro Linear Corporation]
Página de inicio  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4411 Datasheet(HTML) 11 Page - Micro Linear Corporation

Back Button ML4411 Datasheet HTML 6Page - Micro Linear Corporation ML4411 Datasheet HTML 7Page - Micro Linear Corporation ML4411 Datasheet HTML 8Page - Micro Linear Corporation ML4411 Datasheet HTML 9Page - Micro Linear Corporation ML4411 Datasheet HTML 10Page - Micro Linear Corporation ML4411 Datasheet HTML 11Page - Micro Linear Corporation ML4411 Datasheet HTML 12Page - Micro Linear Corporation ML4411 Datasheet HTML 13Page - Micro Linear Corporation ML4411 Datasheet HTML 14Page - Micro Linear Corporation  
Zoom Inzoom in Zoom Outzoom out
 11 / 14 page
background image
11
ML4411/ML4411A
+5V
D1
TO ML4411
PIN 16
R2
R1
IC1
IC1
IC1
TO ML4411
PIN 18
D2
C2
1/6
1/6
1/6
ML4411
PIN 17
C1
Figure 11. Analog Start-up Circuit
TO ML4411
PIN 28
R3
+
A1
+
A1
C3
R4
+12V
R5
R6
TO ML4411
PIN 20
SYMBOL
VALUE
A1
LM358
IC1
74HC14
D1, D2
IN4148
R1
1Mý
R2
1Mý
R3
100Ký
SYMBOL
VALUE
R4
100Ký
R5
50Ký
R6
50Ký
C1
3.3µF
C2
3.3µF
C3
0.47µF
Figure 12. Analog Speed Control
In Condition 2 above, the P-Channel MOSFET is pulled up
inside the ML4411 with a 16Ký resistor. If the current
through C(CGp) is greater than VTH Þ 16K when the
N-FET turns on, the P-FET could turn on simultaneously,
causing cross-conduction. Adding R1 as shown in Figure
14 eliminates this. The size of R1 will depend on the fall
time of the phase voltage, and the size of the C(DGp). D1
may be needed for high power applications to limit the
negative current pulled (through C(DGn)) out of the
substrate diode in the ML4411 when P-FET turns off.
P
N
D1
C(DGn)
C(DGp)
RG(P)
RG(N)
R1
VCC2
Figure 14. Causes of Cross-conduction
Adding a series damping resistor to the N-FET gate (RGn)
will slow the fall time. The damping resistor should be
low enough to:
Avoid turning on the N-Channel gate when the PNP
turns on via the same mechanism outlined in condition
2 above
Not severely increase the switching losses in the N-FET
UNIPOLAR OPERATION
Unipolar mode offers the potential advantage of lower
motor drive cost by only requiring the use of 3 transistors
to drive the motor. The ML4411 will operate in unipolar
mode (Figure 15) provided the following precautions are
taken:
1. The IC supplies should not exceed 12V + 10%.
2. The phase pins on the IC should not exceed the
supply voltage.
VCC2
1K
P
5
4
INHIBIT N3
Q2
+
A6
ML4411A ONLY
P3
16K
Figure 13. Alternate cross-conduction prevention for
ML4411A
1. When transitioning from mode 0 to mode A (see table
1) P3 goes from on to off at the same time N3 goes
from off to on. If the P3 turns off slowly and N3 turns
on quickly, cross-conduction may occur. This condition
has been prevented inside the IC on the ML4411A
through the addition of comparator A6 on the P3
output (Figure 9). This comparator may cause an
oscillation when the N3 switches on due to the
capacitive coupling effect described below pulling the
P3 pin below VCC2-1.4V. To avoid this, use the circuit
in Figure 13.
2. When the MOSFET in the same phase switches on gate
current flows due to capacitive coupling of current
through the MOSFET’s drain to gate capacitance. This
could cause the device that was off to be turned on.


Número de pieza similar - ML4411

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Mitsubishi Electric Sem...
ML44126N MITSUBISHI-ML44126N Datasheet
51Kb / 4P
   FOR OPTICAL INFORMATION SYSTEMS
ML44126R MITSUBISHI-ML44126R Datasheet
51Kb / 4P
   FOR OPTICAL INFORMATION SYSTEMS
More results

Descripción similar - ML4411

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
STMicroelectronics
L6238 STMICROELECTRONICS-L6238 Datasheet
402Kb / 35P
   SENSORLESS SPINDLE MOTOR CONTROLLER
L6238S STMICROELECTRONICS-L6238S Datasheet
324Kb / 31P
   12V SENSORLESS SPINDLE MOTOR CONTROLLER
logo
Rohm
BA6966FV ROHM-BA6966FV Datasheet
182Kb / 6P
   1ch Sensorless Spindle Motor Driver for MD
logo
Fairchild Semiconductor
ML4425 FAIRCHILD-ML4425 Datasheet
167Kb / 16P
   Sensorless BLDC Motor Controller
logo
Micro Linear Corporatio...
ML4425 MICRO-LINEAR-ML4425 Datasheet
353Kb / 16P
   Sensorless BLDC Motor Controller
ML4435 MICRO-LINEAR-ML4435 Datasheet
576Kb / 14P
   Sensorless BLDC Motor Controller
ML4420 MICRO-LINEAR-ML4420 Datasheet
2Mb / 14P
   ENHANCED SENSORLESS BLDC MOTOR CONTROLLER
ML4426 MICRO-LINEAR-ML4426 Datasheet
353Kb / 16P
   Bi-directional Sensorless BLDC Motor Controller
logo
Princeton Technology Co...
PT2434 PTC-PT2434 Datasheet
412Kb / 5P
   3-Phase Sensorless BLDC Motor Controller
logo
ATMEL Corporation
AT78C7015 ATMEL-AT78C7015 Datasheet
134Kb / 5P
   Spindle/VCM Motor Controller/Drivers AT78C7015 Summary
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com