參數(shù)資料
型號： LS7362
廠商： LSI Corporation
英文描述： BRUSHLESS DC MOTOR COMMUTATOR/CONTROLLER
中文描述： 無刷直流電機(jī)換向器/控制器
文件頁數(shù)： 3/6頁
文件大?。?/td> 92K
代理商： LS7362
MAXIMUM RATINGS:
PARAMETER
Storage Temperature
Operating Temperature
1. Plastic
2. Ceramic
Voltage (any pin to Vss)
SYMBOL
T
STG
VALUE
-65 to +150
UNIT
°C
T
A
T
A
-25 to +70
-55 to +125
-30 to +.5
°C
°C
Volts
V
MAX
DC ELECTRICAL CHARACTERISTICS:
(All Voltages Referenced to V
DD
)
SYMBOL
V
SS
MIN
5
TYP
-
MAX
28
UNIT
Volts
Supply Voltage
Supply Current
(Excluding Outputs)
I
nput Specifications
:
BRAKE, ENABLE, CS1, CS2
S1, S2, S3, FORWARD/REVERSE
Voltage (Logic "1")
(Logic "0")
OVERCURRENT SENSE (See Note)
Voltage (Logic "1")
(Logic "0")
Oscillator:
Frequency Range
External Resistor Range
I
DD
-
4.5
6
mA
R
IN
-
150
-
K
V
IH
V
IL
V
SS
-
1.5
0
-
-
V
SS
Volts
Volts
V
SS
-4.0
V
IH
V
IL
(V
SS
/2)+.25
0
-
-
V
SS
Volts
Volts
(V
SS
/2)-.25
F
osc
R
osc
0
22
1/RC
-
100
1000
kHz
k
NOTE:
Theoretical switching point of the OVERCURRENT SENSE input is one half of the power supply determined by an internal bias
network in manufacturing. Tolerances cause the switching point to vary plus or minus .25 Volts. After manufacture, the switching point
remains fixed within 10 mV over time and temperature. The input switching sensivity is a maximum of 50mV. There is no hysteresis on
the OVERCURRENT SENSE input.
TABLE I
OUTPUT CURRENT LIMITING RESISTOR SELECTION TABLE
POWER
OUTPUT CURRENT
SUPPLY
(VOLTS) 20 15 10 7.5 5 2.5 mA
6
**
**
**
9
**
**
**
12
.35 .53 .88 1.2 2.1
15
.54 .76 1.2 1.7 2.6
18
*
1.0 1.6 2.1 3.2
21
*
*
1.9 2.5 3.8
24
*
*
2.2 2.9 4.4
28
*
*
*
*causes excessive power dissipation
**exceeds max current possible for this voltage
**
.94 1.6
**
2.0
3.2
4.0
5.3 Resistance
6.5 (k
)
7.7
9.0
3.5 5.3 10.3
TABLE II
For Power Supply 5-28 Volts
R13 (K ohms) Output Voltage
10 Vss -0.5
5.1 Vss -1.0
2.7 Vss -2.0
TABLE III
OUTPUT COMMUTATION SEQUENCE
THREE PHASE OPERATION
CS1 CS2
CS1 CS2 CS1 CS2
0 0 0 1 1 0 1 1
ELECTRICAL SEPARATION
(-60°-)
(-120°-)
SENSE INPUTS
S1 S2 S3
S1 S2 S3
0 0 0
0 0 1
1 0 0
1 0 1
1 1 0
1 0 0
1 1 1
1 1 0
0 1 1
0 1 0
0 0 1
0 1 1
SEQUENCE SELECT
CS1 CS2
FORWARD/REVERSE=1
FORWARD/REVERSE=0
(-240°-)
S1 S2 S3 S1 S2 S3
0 1 0 0 1 1
1 1 0
1 0 0
1 0 1
0 0 1 0 0 0
0 1 1
(-300°-)
OUTPUTS DRIVERS
ENABLED A B C ENABLED A B C
O1, O5
+ - Off
O3, O5
Off - +
O3, O4
- Off +
O2, O4 - + Off
O2, O6
Off + -
O1, O6
+ Off -
OUTPUTS DRIVERS
O2, O4
O2, O6
O1, O6
O1, O5
O3, O5
O3, O4
- + Off
Off + -
+ Off -
+ - Off
Off - +
- Off +
1 1 1
1 1 0
1 0 0
0 0 1
0 1 0
1 0 1
0 0 0
1 1 1
0 0 0
1 1 1
0 1 0 ALL DISABLED
1 0 1
ALL DISABLED
ALL DISABLED
ALL DISABLED
The OVERCURRENT input (BRAKE low) enables external output drivers in normal sequence when more negative than Vss/2 and disables
all external output drivers when more positive than Vss/2. The OVERCURRENT is sensed continuously, and sets a flip flop which is reset
by the rising edge of the ENABLE input or the sawtooth OSCILLATOR. (See description under OVERCURRENT SENSE.)
7362-110292-3
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