LS7560 Просмотр технического описания (PDF) - LSI Corporation
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LS7560 Datasheet PDF : 8 Pages
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VM
S1
24 S1
S2,S3
25 S2
26
S3
17
OUT1
15
OUT3
20
14
TOP
DRIVER OUT4
POLARITY
SELECT
12
23
OUT6
BRAKE
(+) 10
OVERCURRENT
SENSE
(+) 11
VM
S1
S2,S3
ROTOR
1
3
VM
4
2
FIGURE 6. FOUR PHASE FULL WAVE MOTOR CONTROLLER
7560-082197-6
FIGURE 6. Four phase motor control requires only two Hall Sensor inputs spaced 90 electrical
degrees apart. S1 is connected to one sensor and S2 and S3 are tied together and connected to
the other sensor (Refer to Table 1). The BRAKE input (Pin 23) is used to control the Top Driver
Select (Pin 20) and the Top Motor Drivers. When the BRAKE input is applied, the Top Motor driv-
ers are turned off and the Top Driver Polarity Select is forced low turning on the Outputs 1 and 3.
Since Outputs 4 and 6 are also turned on, the motor windings become shorted together.
The information included herein is believed to be
accurate and reliable. However, LSI Computer Systems,
Inc. assumes no responsibilities for inaccuracies, nor for
any infringements of patent rights of others which may
result from its use.
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