tb6551f TOSHIBA Semiconductor CORPORATION, tb6551f Datasheet - Page 11

• Manufacturer Part Number: tb6551f
• Description: 3-phase Full-wave Sine-wave Pwm Brushless Motor Controller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Operation Flow
Positional signal
(Hall IC)
Voltage
instruction
Oscillator
System clock
generator
Position
detector
(Note)
100%
92%
0
Phase matching
0.2 V (typ.)
0.2 V (typ.)
Counter
Driven by square wave
Voltage instruction V
Voltage instruction V
Driven by sine wave
11
Phase U
Phase
Phase V
W
Note: Output ON time is decreased by the dead time.
(carrier frequency)
(modulation signal)
Sine-wave pattern
Triangular wave
(carrier frequency ´ 92% - T
e
e
5 V (V refout )
4.6 V
Comparator
d
´ 2)
2002-12-24
TB6551F
U
X
V
Y
W
Z