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ML4411CS 데이터시트(PDF) 2 Page - Micro Linear Corporation

부품명 ML4411CS
상세설명  Sensorless Spindle Motor Controller
PDF  14 Pages
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제조업체  MICRO-LINEAR [Micro Linear Corporation]
홈페이지  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4411CS 데이터시트(HTML) 2 Page - Micro Linear Corporation

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2
ML4411/ML4411A
PIN CONFIGURATION
1
GND
Signal and Power Ground
2
P1
Drives the external P-channel
transistor driving motor PH1
3
P2
Drives the external P-channel
transistor driving motor PH2
4VCC2
12V power and power for the
braking function
5
P3
Drives the external P-channel
transistor driving motor PH3
6COTA
Compensation capacitor for linear
motor current amplifier loop
7CBRK
Capacitor which stores energy to
charge N-channel MOSFETs for
braking with power off.
8
DIS PWR
A logic 0 on this pin turns off the N
and P outputs and causes the TACH
comparator output to appear on TACH
OUT
9-11 N1, N2 N3 Drives the external N-channel
MOSFETs for PH1, PH2, PH3
12 ISENSE
Motor current sense input
13 COS
Timing capacitor for fixed off-time
PWM current control
14 CVCO
Timing capacitor for VCO
15 VCO/TACH Logic Output from VCO or TACH
OUT
comparator
16 RESET
Input which holds VCO off and sets the
IC to the RESET condition
17 PWR FAIL
A “0” output indicates 5V or 12V is
under-voltage. This is an open
collector output with a 4.5ký pull-up
to +5V
18 ENABLE E/A A ”1” logic input enables the error
amplifier and closes the back-EMF
feedback loop
19 +5V
5V power supply input
20 RC
VCO loop filter components
21 IRAMP
Current into this pin sets the initial
acceleration rate of the VCO during
start-up
22 PH1
Motor Terminal 1
23 PH2
Motor Terminal 2
24 PH3
Motor Terminal 3
25 VCC
12V power supply. Terminal which is
sensed for power fail
26 BRAKE
A ”0” activates the braking circuit
27 ILIMIT
Sets the threshold for the PWM
comparator
28 ICMD
Current Command for Linear Current
amplifier
PIN NAME
FUNCTION
PIN NAME
FUNCTION
PIN DESCRIPTION
ML4411
28-Pin SOIC (S28W)
GND
P1
P2
VCC2
P3
COTA
CBRK
DIS PWR
N1
N2
N3
ISENSE
COS
CVCO
ICMD
ILIMIT
BRAKE
VCC
PH3
PH2
PH1
IRAMP
RC
+5V
ENABLE E/A
PWR FAIL
RESET
VCO/TACH OUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
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