TB6634FNG

TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic TB6634FNG 3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller TB6634FNG The TB6634FNG is designed for motor fan applications for three-phase brushless DC (BLDC) motors. Features Sine-wave PWM control Triangular-wave generator (with a carrier frequency of fOSC/252 Hz) Lead angle control (0° to 58° in 32 separate steps) Lead angle external setting or automatic internal control Current-limiting input pin Voltage regulator (Vrefout = 5 V (typ.), 30 mA (max)) Operating supply voltage range: VCC = 6 V to 16.5 V Motor restrained detection Motor supply voltage detection Weight: 0.17 g (typ.) © 2014 TOSHIBA Corporation 1 2015-4-3 Block Diagram OSC/C OSC/R HUP HUM HVP HVM HWP HWM VSP VCC GND Vrefout RES Idc CW/CCW FGC FG Vdc TR Gin Gout PH LPF/LA UL Peak hold + System clock generator Position estimation 5-bit ADC Counter Voltage regulat or Internal ref. voltage Phase alignment Power-on reset FG Rotation direction Protection & Reset ST/SP CW/CCW ERR GB Lowpass filter Output waveform generator Upper limit 6-bit triangular wave generator Phase U Data Phase V seletor Phase W Comparator Comparator Comparator Comparator 120/180 Charger PWM HU HV 120° HW commutation matrix 120/180 select & gate block 2-bit ADC & Over voltage detection Restraint detection Dead time control In the above block diagram, part of the functional blocks or constants may be omitted or simplified for explanato...