TB6551F

TB6551F TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic TB6551F 3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller Features · · · · · · · · Sine-wave PWM control Built-in triangular-wave generator (carrier cycle = fosc/252 (Hz)) Built-in lead angle control function (0° to 58° in 32 steps) Built-in dead time function (setting 2.6 µs or 3.8 µs) Supports bootstrap circuit Overcurrent protection signal input pin Built-in regulator (Vref = 5 V (typ.), 30 mA (max)) Operating supply voltage range: VCC = 6 V to 10 V Weight: 0.33 g (typ.) 1 2002-12-24 TB6551F Block Diagram LA 23 6-bit triangular wave generator 10 Td Comparator 9 U Comparator 6 X 8 V 5 Y 7 W 4 Z 5-bit AD 4 bits Counter Output waveform generator Data select Phase W Comparator 120/180 Charger FG Rotating direction PWM HU HV HW Comparator Phase V Phase U Xin 14 System clock generator Xout 15 HU 21 HV 20 Position detector HW 19 Internal Phase reference matching voltage Ve 22 Setting dead time VCC 1 Regulator P-GND 3 S-GND 13 Vrefout 24 12 OS Power-on reset Switching 120°/180° and gate block protection on/off 120°turn-on matrix RES 11 Idc 3 CW/CCW 18 FG 17 ST/SP Protection CW/CCW & ERR reset GB REV 16 2 2002-12-24 TB6551F Pin Description Pin No. 21 20 19 Symbol HU HV HW Description Positional signal input pin U Positional signal input pin V Positional signal input pin W Rotation direction signal input pin L: Forward H: Reverse L: Reset (Output is non-active) 11 RES Reset-signal-i...