TB6537P TOSHIBA [Toshiba Semiconductor], TB6537P Datasheet - Page 9

• Manufacturer Part Number: TB6537P
• Description: 3-PHASE FULL-WAVE SENSORLESS CONTROLLER FOR BRUSHLESS DC MOTORS
• Manufacturer: TOSHIBA [Toshiba Semiconductor]

Induced voltage
Turn-on signal
(1) Lead angle: 0 degree
(2) Lead angle: 7.5 degrees
(3) Lead angle: 15 degree
(4) Lead angle: 30 degree
Induced voltage
Turn-on signal
(1) Lead angle: 0 degree
(2) Lead angle: 7.5 degrees
(3) Lead angle: 15 degree
(4) Lead angle: 30 degree
7. Lead Angle Control
8. Lap Turn-on Control
automatically changes to the lead angle that was set using LA0 and LA1. However, if both LA0 and LA1
are set for High, the lead angle is 30
commutation.
the shaded area in the chart below) so as to create some overlap when switching turn-on signals. The lap
time differs depending on the lead angle setting.
OUT_UP
OUT_UN
OUT_VP
OUT_VN
OUT_WP
OUT_WN
OUT_UP
OUT_UN
OUT_VP
OUT_VN
OUT_WP
OUT_WN
OUT_UP
OUT_UN
OUT_VP
OUT_VN
OUT_WP
OUT_WN
OUT_UP
OUT_UN
OUT_VP
OUT_VN
OUT_WP
OUT_WN
OUT_UP
OUT_UN
OUT_VP
OUT_VN
OUT_WP
OUT_WN
OUT_UP
OUT_UN
OUT_VP
OUT_VN
OUT_WP
OUT_WN
OUT_UP
OUT_UN
OUT_VP
OUT_VN
OUT_WP
OUT_WN
OUT_UP
OUT_UN
OUT_VP
OUT_VN
OUT_WP
OUT_WN
The lead angle is 0
When SEL_LAP = High, the turn-on angle is 120
In Lap Turn-on Mode, the time between zero-cross point and the 120
°
during the starting forcible commutation and, when normal commutation is started,
30 degrees
15 degrees
22.5 degrees
°
in the starting forcible commutation as well as in normal
U
U
9
°
. When SEL_LAP = Low, the Lap Turn-on Mode starts.
V
V
°
turn-on timing becomes longer (see
TB6537P/PG/F/FG
W
W
2006-3-6