TB6556FG Toshiba, TB6556FG Datasheet - Page 18

• Manufacturer Part Number: TB6556FG
• Manufacturer: Toshiba

Specifications of TB6556FG

• Function: Controller
• Vopmax (vm*): 7V (12V)
• Io (lpeak): 2mA
• Sinusoidal Current Wave: yes
• Sensor-less: no
• Speed Feedback Loop: no
• Package: SSOP24
• Rohs Compatible†: yes

Operating Waveform When Driven by Sine-Wave PWM
= High)
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 TB6556FG 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, SS
Triangular wave (carrier frequency)
e
. (See the diagram of the output
osc
= 4 MHz) and the
TB6556FG
2009-02-10
ONU
as