TB6556F TOSHIBA [Toshiba Semiconductor], TB6556F Datasheet - Page 18

• Manufacturer Part Number: TB6556F
• Description: 3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller
• Manufacturer: TOSHIBA [Toshiba Semiconductor]

Operating Waveform When Driven by Sine-Wave PWM
Generation inside of IC
Output waveform
Inter-line voltage
Note: At startup, the motor is driven by a sine wave when the Hall signals are 5 Hz or higher (f
When driven by a sine wave, the motor is accelerated or decelerated according to the ON duty of T
the amplitude of the modulation symbol changes according to voltage V
ON duty on page 14.)
Phase W
Phase U
Phase V
motor is rotating in the same direction as the TB6556F/FG controlling it (REV = LOW).
(W-U)
(V-W)
V
(U-V)
V
V
WU
VW
UV
W
U
V
Y
X
Z
Triangular wave frequency = carrier frequency = f
Modulation signal
18
osc
/252 (Hz)
(CW/CCW = LOW, OS = HIGH)
Triangular wave (carrier frequency)
e
. (See the diagram of the output
osc
TB6556F/FG
= 4 MHz) and the
2005-01-19
ONU
as