Datasheet

 
SLUS318B – APRIL 1999 – REVISED JANUARY 2002
14
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APPLICATION INFORMATION
UDG–97190
0 60 120 180 240 300 360 420 480 540 600 660 720
ROTOR POSITION IN ELECTRICAL DEGREES
Code
101 100 110 010 011 001 101 100
110
010 011 001
H1
H2
H3
AHI
BHI
CHI
ALO
BLO
CLO
+
0
–
A
+
0
–
B
+
0
–
C
MOTOR
PHASE
CURRENTS
QUAD=0
LOW SIDE
OUTPUTS
QUAD=0
HIGH SIDE
OUTPUTS
QUAD=0
SENSOR
INPUTS
AHI
BHI
CHI
ALO
BLO
CLO
+
0
–
A
+
0
–
B
+
0
–
C
MOTOR
PHASE
CURRENTS
QUAD=1
LOW SIDE
OUTPUTS
QUAD=1
HIGH SIDE
OUTPUTS
QUAD=1
100% Duty Cycle PWM 50% Duty Cycle PWM
Figure 12. Motor Drive and Current Waveforms for Two-Quadrant (QUAD=0)
and Four-Quadrant (QUAD=1) Operation