TB6575FNG

TOSHIBA CMOS Integrated Circuit Silicon Monolithic TB6575FNG PWM Sensorless Controller for 3-Phase Full-Wave BLDC Motors 1. Description The TB6575FNG provides sensorless commutation and PWM current control for 3-phase full-wave BLDC motors. It controls rotation speed by changing a PWM duty cycle by analog voltage. TB6575FNG 2. Features Weight: 0.14 g (Typ.) ● 3-phase full-wave sensorless drive ● PWM chopper drive ● PWM duty cycle control by analog input ● 20-mA current sink capability on PWM output pins ● Overcurrent protection ● Forward/reverse rotation ● Lead angle control (7.5 ° and 15 °) ● Overlap commutation ● Rotation speed sensing signal ● DC excitation mode to improve startup characteristic ● DC excitation time and forced commutation time for startup operation can be changed. ● Forced commutation frequency can be selected. (fXT/(6 × 216), fXT/(6 × 217), fXT/(6 × 218) ) ● Output polarity switching (P-channel + N-channel, N-channel + N-channel) © 2008-2023 1 Toshiba Electronic Devices & Storage Corporation 2023-11-27 Rev.1.1 3. Pin assignment GND 1 SC 2 OS 3 FMAX 4 VSP 5 CW_CCW 6 FG_OUT 7 START 8 IP 9 XTout 10 XTin 11 LA 12 24 FST 23 WAVE 22 OC 21 VDD 20 SEL_LAP 19 Duty 18 OUT_WN 17 OUT_WP 16 OUT_VN 15 OUT_VP 14 OUT_UN 13 OUT_UP Figure 3 Pin Assignment TB6575FNG © 2008-2023 2 Toshiba Electronic Devices & Storage Corporation 2023-11-27 Rev.1.1 4. Block diagram TB6575FNG 5 VSP 2 SC 8 START IP 9 FST 24 FMAX 4 LA 12 CW_CCW 6 20 SEL_LAP Startup time s...