TB6572AFG*** Toshiba, TB6572AFG*** Datasheet - Page 8

• Manufacturer Part Number: TB6572AFG***
• Manufacturer: Toshiba

Specifications of TB6572AFG***

• Function: Controller
• Vopmax (vm*): 17V (30V)
• Io (lpeak): 20mA
• Sinusoidal Current Wave: yes
• Sensor-less: no
• Speed Feedback Loop: yes
• Package: QFP52
• Rohs Compatible†: yes

Line-to-line
voltage
(V
Phase-A
(inside IC)
Pin
voltage
A
− V
V
Operating Waveforms for Sine wave PWM Drive
V
V
V
B
AB
A
B
C
In addition, the TB6572AFG performs phase alignment with the modulation waveforms at each
zero-crossing in the position detection signals.
For every 60° of electrical angle, it synchronizes with the rising and falling edges of the position detection
signals (Hall amplifier output signals), thus resetting the modulation waveforms.
If zero-crossing timing is shifted in position detection signals, causing next zero-crossing to occur before 32
data items are reached for the 60° phase, the data is reset and data for the next 60° phase is started.
In that case, the modulation waveforms become discontinuous at a reset.
)
Timing charts may be simplified for explanatory purposes.
HC
HA
HB
S
B
(1)
1
Modulation signal
2
3
4
8
(2)
(1)’
28
29
Reset
30
31
1
2
Carrier frequency
3
TB6572AFG
2008-1-21
2.7 V
GND
V
GND
V
GND
V
GND
(typ.)
CC
CC
CC