TB6556F Datasheet, PDF (14/22 Pages) Toshiba Semiconductor – 3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller

Operation Flow
TB6556F/FG
Positional signal
Position
Phase U
U
(Hall IC)
detector
Counter
X
Phase V
V
Phase matching
Y
Voltage
instruction
Oscillator
System clock
generator
Phase _{Sine-wave pattern}
W _{(modulation signal)} ^Comparator
W
Z
Triangular wave
(carrier frequency)
(Note)
92%
Driven by square wave
2.1 V (typ.)
Voltage command signal V_e
5.0 V (typ.)
Note: Output ON time is decreased by the dead time
(carrier frequency × 92% − T_d × 2)
100%
Driven by sine wave
0
2.1 V (typ.)
5.4 V (typ.)
Voltage command signal V_e
14
2005-01-19