TDF5140 Philips Semiconductors, TDF5140 Datasheet - Page 11

• Manufacturer Part Number: TDF5140
• Description: Brushless DC motor drive circuit
• Manufacturer: Philips Semiconductors

handbook, full pagewidth
Philips Semiconductors
1999 March 15
Brushless DC motor drive circuit
processor
GND2
GND1
micro-
FG to
from
DAC
47 k
220 nF
18 nF
18 nF
10 nF
5 V
TEST
4.7
k
V P
Fig.5 Typical application of the TDF5140A as a scanner driver, with use of OTA.
14 V
14
11
10
9
2
12
6
8
PROTECTION
THERMAL
DETECTOR
ROTATION
OUTPUT
SPEED/
STAGE
TDF5140A
47 nF
680
BD434
15
COMMUTATION
470
OSCILLATOR
ADAPTIVE
START-UP
DETECTOR
POSITION
120
DELAY
TIMING
DIVIDE
STAGE
BY 2
39 k
7
13
47 nF
10 k
5
COMMUTATION
LOGIC
11
1 F
4
EMF COMPARATORS
TP
TP
TP
TN
TN
TN
TN
TN
TN
D
D
D
D
D
D
18
17
16
1
3
SCANNER
MOTOR
Product specification
MBK986
TDF5140A
POSITION
COIL