tb6548f TOSHIBA Semiconductor CORPORATION, tb6548f Datasheet - Page 3

• Manufacturer Part Number: tb6548f
• Description: Three-phase Full-wave Pwm Sensorless Controller For Brushless Dc Motors
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Pin Description
Pin No.
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
CW_CCW
SEL_LAP
FG_OUT
OUT_UP
OUT_UN
OUT_VP
OUT_VN
Symbol
PWM
GND
V
LA0
LA1
X
NC
NC
NC
NC
NC
NC
X
Tin
DD
T
I/O










O
O
O
O
O
I
I
I
I
I
Lead angle setting signal input pin
•
•
•
•
•
PWM signal input pin
•
•
•
Rotation direction signal input pin
•
•
•
Not connected
Number of ratation detection signal output pin
•
Not connected
Lap turn-on select pin
•
•
•
Not connected
Resonator connecting pin
•
Connected to GND.
Connected to 5-V power supply.
U-phase upper turn-on signal output pin
•
•
U-phase lower turn-on signal output pin
•
•
Not connected
V-phase upper turn-on signal output pin
•
•
Not connected
V-phase lower turn-on signal output pin
•
•
Not connected
LA0 = Low, LA1 = Low: Lead angle 0 degree
LA0 = High, LA1 = Low: Lead angle 7.5 degree
LA0 = Low, LA1 = High: Lead angle 15 degree
LA0 = High, LA1 = High: Lead angle 30 degree
Built-in pull-down resistor
Inputs Low-active PWM signal
Built-in pull-up resistor
Disables input of duty-100% (Low) signal
High for 250 ns or longer is required.
High: Reverse (U → W → V)
Low, Open: Forward (U → V → W)
Built-in pull-down resistor
Equiralent to U-phase signal (except PWM)
Low: Lap turn-on
High: 120 degrees turn-on
Built-in pull-up resistor
Selects starting commutation frequency.
Starting commutation frequency f
U-phase winding wire positive ON/OFF switching pin
ON: Low, OFF: High
U-phase winding wire negative ON/OFF switching pin
ON: High, OFF: Low
V-phase winding wire positive ON/OFF switching pin
ON: Low, OFF: High
V-phase winding wire negative ON/OFF switching pin
ON: High, OFF: Low
3
st
= Resonator frequency f
Description
xt
/(6 × 2
17
)
2001-08-28
TB6548F