TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB6634FNG
3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controll...
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...