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參數(shù)資料
| 型號(hào)： | LS7560-TS |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項(xiàng)-數(shù)據(jù)表參考 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 86K |
| 代理商： | LS7560-TS |
BRUSHLESS DC MOTOR CONTROLLER
FEATURES
Open loop motor control
Tachometer output for closed loop motor control
Error Amplifier and PWM Speed Comparator with full accessibility
High noise immunity Schmitt Triggers on Sensor inputs
5.5V Reference Supply for external sensors
Cycle-by-cycle current sensing
Static, or current limited dynamic, motor braking
Output enable delay on speed direction reversal
Enable input with fault sensing capability
Fault Indicator output
60°/300° or 120°/240° electrical sensor spacing selection
Selectable PWM of top and bottom drivers or bottom drivers only
CMOS compatible motor outputs with drive capability
Selectable top driver polarity
Low power dissipation
+10V to +18V Power Supply (V
DD
-Vss)
28 Pin Plastic DIP (300 mil, 600 mil), 28 Pin SOIC
GENERAL DESCRIPTION
The LS7560/LS7561 are CMOS integrated circuits designed to
control three or four phase brushless DC motors in a closed or
open loop configuration. The IC consists of a decoder which
provides proper commutation sequencing, a frequency-to-
pulse width converter and error amplifier for closed loop motor
speed control, a PWM comparator and sawtooth oscillator for
external driver power control and a 5.5V reference generator
for supplying power to motor sensors. Also included is Fault
detection and indication, overcurrent sensing, dynamic motor
braking, forward/reverse input, sensor spacing selections and
an enable input control. The overcurrent sense condition will
disable all output drivers when using the LS7560 and only the
bottom drivers when using the LS7561.
The IC operates from 10V to 18V and provides CMOS com-
patible outputs for interfacing with external power devices.
Operating below 10V will activate a Fault Indication Output
and disable all Output Drivers.
INPUT/OUTPUT DESCRIPTION
: (See Figure 2)
SEQUENCE SELECT Input
(Pin 1 )
A High on this input selects 60°/300° and a Low selects 120°/
240° electrical sensor separation. Use of a 300° or 240° motor
will cause opposite direction rotation as compared to a 60° or
120° motor.
F/R Input
(Pin 27)
A High on this input selects Forward direction and a Low se-
lects Reverse direction. The motor drive outputs are disabled
for 2 clock cycles at the onset of a direction change.
March 1999
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
FIGURE 1. PIN CONNECTION DIAGRAM
TOP VIEW
L
SEQUENCE SELECT
ENABLE
FAULT INDICATOR
RC
TACHOMETER OUT
ERROR AMP (+)
ERROR AMP (-)
OSCILLATOR
ERROR AMP OUT
CURRENT SENSE (+)
CURRENT SENSE (-)
OUT 6
OUT 5
OUT 4
OUT 3
OUT 2
OUT 1
V
SS
(-V)
V
R
TOP DRIVER POLARITY SELECT
PWM CONTROL
BRAKE SELECT
BRAKE
S1
S2
S3
F/R
V
DD
(+V)
HALL
SENSORS
S1, S2, S3 Inputs
(Pins 24, 25, 26)
Hall Sensor inputs which are decoded to determine the Motor
Commutation Sequence. An invalid input code disables all motor
outputs. Inputs have Schmitt Trigger buffers for noise immunity.
BRAKE Input
(Pin 23)
With the BRAKE SELECT input Low, a High on the BRAKE input
forces the Top Drivers to an OFF condition and the Bottom Drivers
to a PWM ON condition. If the Motor is under Closed Loop control,
the Loop is automatically opened and the error amplifier output is
connected to the Error Amp (-) input. By controlling the voltage at
teh Error Amp (+) input, the PWM duty cycle is controlled during
braking. This manner of braking prevents the Bottom Motor Drivers
from drawing excessive current, a condition which can occur during
normal braking, when the Bottom Drivers are turned ON un-
conditionally. With the BRAKE SELECT input High, a High on the
BRAKE input unconditionally causes the Top Drivers to turn OFF
and the Bottom Drivers to turn ON. The BRAKE function has prior-
ity over all other functions.
BRAKE SELECT Input
(Pin 22)
A Low on this input selects PWM control of braking and a High se-
lects unconditional braking.
ENABLE Input
(Pin 2)
When the ENABLE input is above V
R
/2, all Output Drivers are en-
abled and when it is below V
R
/2.2, all Output Drivers are disabled.
This input has a nominal hysteresis of .05V
R
, where V
R
is the inter-
nally generated Reference Voltage available on Pin 19. Because
the ENABLE input is level sensitive, it can easily be used to control
operation of the IC based on an Analog Fault Condition.
LSI/CSI
LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (516) 271-0400 FAX (516) 271-0405
LS7560/7561
UL
A3800
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LS7561-S | Controller Miscellaneous - Datasheet Reference |
| LS7561-TS | Controller Miscellaneous - Datasheet Reference |
| LS7631-S | Analog Miscellaneous |
| LS7632-S | Analog Miscellaneous |
| LS8025M | Analog IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LS7561 | 制造商:LSI 制造商全稱:LSI 功能描述:BRUSHLESS DC MOTOR CONTROLLER |
| LS7561N | 制造商:LSI 制造商全稱:LSI 功能描述:BRUSHLESS DC MOTOR CONTROLLER |
| LS7561-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Controller Miscellaneous - Datasheet Reference |
| LS7561-TS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Controller Miscellaneous - Datasheet Reference |
| LS7566 | 制造商:LSI 制造商全稱:LSI 功能描述:24-BIT FOUR-AXES QUADRATURE COUNTER |
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