TB6571FG(O,EL) Toshiba, TB6571FG(O,EL) Datasheet - Page 18

• 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

Automatic phase lead angle correction circuit
・ The circuit corrects the lead angle using the motor current value.
Lock protection circuit
Automatic lead angle correction
Motor current
・ The circuit clamps the lead angle at 29°.
・ It logically clamps the angle between 0° and 29°, rather than clamping the input voltage.
• The circuit can advance the phase of an energization signal relative to the induced voltage for input of
• The circuit turns the output power FET off if the motor is locked.
• It turns off both upper and lower output power FETs if it detects the Ready signal with the following
• A reference oscillation waveform for lock protection is generated using an external capacitor connected
• When CLD = 0.1 µF, the oscillation frequency is approximately 25 Hz, so that the lock protection
Detected signal
Ready signal
0 to 2.5 V (16 steps).
0 V → 0°
2.5 V → 29°(29° for an input voltage higher than 2.5 V)
condition satisfied.
The circuit latched state is terminated once the TB6571FG is placed in the stop or brake state.
to the CLD pin and counted with the internal 5-bit counter.
triggering time is 5.5 seconds (typ.).
*)Gain = (R2+R3) / R2
[
RF
V
The Ready signal output remains high
for at least 5.5 seconds (typ.).
Condition for triggering lock protection
VRF
VRF
R2
5.4°
58°
29°
0°
Amp
0
R3
.
Gain x VRF
Gain x VRF
2.5 V
LA
5 V
18
R4
Peak
hold
Gain x VRF
C2
(peak)
Gain x VRF
(peak)
LA 値
T
LA value
A-D conversion
TB6571FG
2005-04-15