TB6575FNG Toshiba, TB6575FNG Datasheet - Page 9

• Manufacturer Part Number: TB6575FNG
• Manufacturer: Toshiba

Specifications of TB6575FNG

• Function: Controller
• Vopmax (vm*): 5.0V (5.5V)
• Io (lpeak): 20mA
• Sinusoidal Current Wave: no
• Sensor-less: yes
• Speed Feedback Loop: no
• Package: SSOP24
• Rohs Compatible†: yes

9. Lead angle control
10. Overlap commutation
PWM signal
PWM signal
Back-EMF
Back-EMF
(1) Lead angle of 0°
(2) Lead angle of 7.5°
(3) Lead angle of 15°
(1) Lead angle of 7.5°
(2) Lead angle of 15°
commutation, the lead angle automatically changes to the value set by the LA pin.
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
low, it is configured to allow for overlap commutation. In overlap commutation, there is an overlap period
during which both the outgoing transistor and incoming transistor are conducting (as shown in the shaded
areas). This period varies according to the lead angle.
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 motor runs with a lead angle of 0° in forced commutation mode at startup. After switching to natural
When SEL_LAP = high, the TB6575FNG is configured to allow for 120° commutation. When SEL_LAP =
15°
22.5°
30°
U
U
9
V
V
W
W
TB6575FNG
*OS = High
*OS = High
2008-9-11