TB6571FG(O,EL) Toshiba, TB6571FG(O,EL) Datasheet - Page 7

• 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

triangular waves to generate sine wave PWM signals.
60°) and uses the time as data for the next 60° phase of the modulation waveforms.
item in a 60° phase part is 1/32 of that for the preceding 60° phase part. The modulation waveform
proceeds with that width.
within the (1)' period proceeds with a width that is 1/32 of (1). In the same way, the waveform within the
(2)' period proceeds with 1/32 of (2), which is the time between HC falling and HB rising.
the same time width until next zero-crossing occurs.
The TB6571FG uses position detection signals to create modulation waveforms, which it compares with
It counts the time between zero-crossing points for the three position detection signals (electrical angle:
A 60° phase part of a modulation waveform consists of 32 data items. The time width for a single data
In the above chart, the time between HA rising and HC falling is marked (1). The modulation waveform
If next zero-crossing does not take place appear after 32 data items, the next 32 data items proceed with
S
B
HA
HB
HC
S
S
S
A
B
C
* t = t (1) × 1/32
*t
*t
1
(5)
2
3
4
(6)
5
6
32 data item
(6)’
(1)
(1)’
(1)’
(2)
7
(2)’
(3)
30
31
32
(3)’
* HA, HB, HC: Hall amplifier
TB6571FG
2005-04-15