|
|
PDF TB6634FNG Data sheet ( Hoja de datos )
| Número de pieza | TB6634FNG | |
| Descripción | 3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller | |
| Fabricantes | Toshiba | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TB6634FNG (archivo pdf) en la parte inferior de esta página. Total 29 Páginas | ||
|
No Preview Available !
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
1 page  
TB6634FNG
Input/Output Equivalent Circuits
Equivalent circuit diagrams may be partially omitted or simplified for explanatory purposes.
Pin
Position signal input U
Position signal input V
Position signal input W
Symbol
Input/Output Signal
HUP
HUM
HVP
HVM
HWP
HWM
Analog
Hysteresis: ±10.5 mV (typ.)
Built-in digital filter
4 CLK@fOSC
Internal Circuit
Vrefout Vrefout
Clockwise/counterclockwise
rotation
CW/CCW
Digital
H: Vrefout -1 V (min)
L: 0.8 V (max)
H/open: Counterclockwise (CCW)
L: Clockwise (CW)
Abnormal detection
RES
Hysteresis comparator
Hysteresis ± 0.1 V (typ.)
Built-in digital filter 4 CLK@fOSC
H: 2.6 V (typ.) or more.
L: 2.4 V (typ.) or less.
H: Runs the motor
L/open: Stops the motor (The
commutation output signals are
forced Low.)
FG output signal switch input
FGC
Digital
H: Vrefout -1 V (min)
L: 0.8 V (max)
H/open: FG = 3 ppr
L: FG = 1 ppr
Vrefout Vrefout
2.0 kΩ
Vrefout
100 Ω
Vrefout Vrefout
2.0 kΩ
Voltage command signal
VSP
Analog
Input range: 0 to 10 V
100 Ω
Motor supply voltage
detection
Adjusting the number of steps
addition of the lead angle by input
voltage (2-bit AD)
Hysteresis ± 0.1 V (typ.)
Over voltage detection
Vdc Hysteresis ± 0.1 V (typ.)
Built-in digital filter4 CLK@fOSC
4.1 V (typ.) or more: Stops the
motor.
(Gate block protection)
3.9 V (typ.) or less: Runs the motor.
5
Vrefout
2015-4-3
5 Page 
TB6634FNG
Function Description
1. Basic Operation
In startup, the motor is driven by square-wave commutation signals that are generated according to the
position signals. When the position signals indicate a rotational speed (f) of 1 Hz, the TB6634FNG estimates
the rotor positions from the position signals and modulate them. The TB6634FNG then generates sine-wave
by comparing the modulated signals against a triangular waveform.
From startup to 1 Hz: square-wave drive (120° commutation); f = fOSC/(750000 × 6)
Over 1 Hz: Sine-wave PWM drive (180° commutation); f will be approximately 1 Hz when fOSC = 4.5 MHz
2. Voltage Command (VSP) Signal and Bootstrap Voltage Regulation
(1) When VSP ≤ 1.0 V:
The commutation signal outputs are disabled (i.e., gate protection is activated).
(2) When 1.0 V < VSP ≤ 2.1 V:
The low-side transistors are turned on at a regular (PWM carrier) frequency. (The conduction duty
cycle is approx. 8 %.) (Refresh)
(3) When 2.1 V < VSP ≤ 7.3 V:
During sine-wave PWM drive, the commutation signals directly appear externally. During
square-wave drive, the low-side transistors are forced on at a regular (PWM carrier) frequency. (The
conduction duty cycle is approx. 8 %.)
(4) When 8.2 V ≤ VSP ≤ 10 V (test mode):
The TB6634FNG operates in sine-wave mode at lead angle of zero. However, it operates in
square-wave mode while it detects upwind.
The drive mode switches from square-wave drive to sine-wave PWM at a VSP of 7.9 V typical.
The conduction duty cycle keeps the state as follows; 5.4 V typical ≤ VSP. It is calculated as
PWM_carrier_frequency × 92 % typical.
PWM Duty
92%
1.0 V
2.1 V
(1) (2)
5.4 V 7.3 V 8.2 V
(3) (4)
VsVp SP
10 V
3. Dead Time Insertion (cross conduction protection)
To prevent a short-circuit between external low-side and high-side power elements during sine-wave PWM
drive, a dead time is digitally inserted between the turn-on of one side and the turn-off of the other side.
(The dead time is also implemented at the full duty cycle during square-wave drive.)
TOFF = 9/fOSC
TOFF ∼− 2.0 μs when fOSC = 4.5 MHz, where fOSC is the reference clock frequency
(i.e., CR oscillator frequency).
U
(V, W)
X
(Y, Z)
11
TOFF
TOFF
2015-4-3
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet TB6634FNG.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TB6634FNG | 3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller | Toshiba |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |