TB6588FG Toshiba, TB6588FG Datasheet - Page 9

• Manufacturer Part Number: TB6588FG
• Description: IC PWM DRVR 3PH DC MOTOR 36HSOP
• Manufacturer: Toshiba
• Type: 3 Phase Full Wave PWM Driver for Sensorless DC Motorsr

Specifications of TB6588FG

• Applications: DC Motor Driver, Brushless (BLDC), 3 Phase
• Number Of Outputs: 1
• Current - Output: 1.5A
• Voltage - Load: 7 V ~ 42 V
• Voltage - Supply: 7 V ~ 42 V
• Operating Temperature: -30°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 36-HSOP
• Product: Fan / Motor Controllers / Drivers
• Operating Supply Voltage: 24 V
• Supply Current: 8 mA
• Mounting Style: SMD/SMT
• Function: Driver
• Vopmax (vm*): 24V (50V)
• Io (lpeak): 2.5A
• Sinusoidal Current Wave: no
• Sensor-less: yes
• Speed Feedback Loop: no
• Package: HSOP36
• Rohs Compatible†: yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9. Lead Angle Control
10. Overlapping Commutation Control
(1) Lead angle of 0°
(2) Lead angle of 7.5°
(3) Lead angle of 15°
(4) Lead angle of 30°
(1) Lead angle of 0°
(2) Lead angle of 7.5°
(3) Lead angle of 15°
(4) Lead angle of 30°
Induced voltage
Induced voltage
PWM signal
PWM signal
The TB6588FG runs in forced commutation mode with a lead angle of 0° at startup. After switching to
normal commutation mode, the lead angle is automatically changed to the value set by the LA1 and LA2
pins.
When SEL_LAP = High, the TB6588FG runs in 120° commutation mode; When SEL_LAP = Low, it runs in
overlapping commutation mode. In overlapping commutation mode, there occurs an overlapping period due
to the lengthened commutation time between the zero cross point and the 120° commutation timing upon
PWM signal switching as shown in the shaded areas. These periods vary depending on the lead angle
setting.
U
V
W
U
V
W
U
V
W
U
V
W
U
V
W
U
V
W
U
V
W
U
V
W
15°
15°
22.5°
22.5°
0°
0°
30°
30°
U
U
9
V
V
W
W
TB6588FG
2008-4-25