tb6539f TOSHIBA Semiconductor CORPORATION, tb6539f Datasheet - Page 14
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tb6539f
Manufacturer Part Number
tb6539f
Description
3-phase Full-wave Sine-wave Pwm Brushless Motor Control
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TB6539F.pdf
(20 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
tb6539fG
Manufacturer:
TOSHIBA/东芝
Quantity:
20 000
Operating Waveform When Driven by Square Wave
Hall signal
Output waveform
Note: At startup, the motor is driven by a square wave when the Hall signals are 5 Hz or lower (fosc = 4 MHz) and
even during off time. At that time, the upper outputs (U, V, and W) are assigned dead time and turned off
at the timing when the lower outputs are turned on. (T
When the motor is driven by a square wave, acceleration/deceleration is determined by voltage V
motor accelerates/decelerates according to the On duty of T
page 11).
To stabilize the bootstrap voltage, the lower outputs (X, Y, and Z) are always turned on at the carrier cycle
the motor is rotating in the reverse direction as the TB6551F controls it (REV = High).
H
H
H
W
W
U
X
V
Y
U
V
Z
Carrier cycle = f
T
ONL
W
Z
= carrier cycle ´ 8% (s) (Uniformity)
osc
/252 (Hz)
T
ONU
waveform
Enlarged
T
d
14
T
ONL
T
Dead time: T
d
d
varies with input V
ONU
(CW/CCW = = = = Low, OS = = = = High)
(see the diagram of output On duty on
d
= 16/f
osc
e
)
(s) (In more than V
TB6539N/F
2002-06-12
e
e
. The
= 4.6 V)