TB6588FG Toshiba, TB6588FG Datasheet - Page 8

• 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

TB6588FG
8. Motor Position Detection Error
The position detection is performed synchronizing with the PWM signal generated in the IC. Thus, a
position detection error related to the PWM signal frequency is induced. Care should be taken when the
TB6588FG is used in high-speed motor applications.
The detection is performed on the falling edge of the PWM signal. An error is recognized when the terminal
voltage exceeds the reference voltage.
Detection lag < 1/f
f
: PWM frequency = f
/256, f
/128
f
: Internal oscillating frequency
p
p
osc
osc
osc
Output: ON
Internal PWM signal
Terminal voltage
Terminal voltage
Reference voltage
Position detection
Ideal detection timing
Actual detection timing
8
2008-4-25