TB6571FG(O,EL) Toshiba, TB6571FG(O,EL) Datasheet - Page 8

• Manufacturer Part Number: TB6571FG(O,EL)
• Description: IC DC MOTOR CTRLR BRUSHLSS 52QFP
• Manufacturer: Toshiba

Specifications of TB6571FG(O,EL)

• Applications: DC Motor Controller, Brushless (BLDC), 3 Phase
• Number Of Outputs: 1
• Voltage - Supply: 10 V ~ 28 V
• Operating Temperature: -30°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 52-QFP
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: TB6571FGTR

Line-to-line
voltage
(V
Phase-A
(inside IC)
Pin
voltage
A
− V
V
V
V
V
Operating Waveforms for Sine wave PWM Drive
B
AB
A
B
C
)
In addition, the TB6571FG 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.
HA
HB
HC
S
B
(1)
1
Modulation signal
2
3
4
8
(2)
(1)’
28
29
Reset
30
31
1
2
Carrier frequency
3
TB6571FG
2005-04-15
2.7 V
GND
V
GND
V
GND
V
GND
(typ.)
CC
CC
CC