TDF5140 Philips Semiconductors, TDF5140 Datasheet - Page 3
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TDF5140
Manufacturer Part Number
TDF5140
Description
Brushless DC motor drive circuit
Manufacturer
Philips Semiconductors
Datasheet
1.TDF5140.pdf
(19 pages)
Philips Semiconductors
BLOCK DIAGRAM
1999 March 15
Brushless DC motor drive circuit
CAP-DC
CAP-CD
CAP-ST
AMP IN
AMP IN
CAP-TI
PG/FG
TEST
13
14
11
10
9
2
12
6
PROTECTION
THERMAL
DETECTOR
ROTATION
POSITION
OUTPUT
SPEED
STAGE
&
TDF5140A
AMP OUT
COMMUTATION
OSCILLATOR
15
ADAPTIVE
START-UP
DETECTOR
CONDUCTANCE
POSITION
DELAY
TIMING
DIVIDE
STAGE
AMPLIFIER
BY 2
TRANS-
PGIN
5
Fig.1 Block diagram
COMMUTATION
GND2
7
LOGIC
3
GND1
18
VMOT
V P
8
4
EMF COMPARATORS
OUTPUT DRIVER
OUTPUT DRIVER
D L
STAGE 2
STAGE 3
D H
OUTPUT
STAGE 1
DRIVER
PUSH/PULL
FLYBACK
MGH313
Product specification
16
17
TDF5140A
1
3
MOT1
MOT2
MOT3
MOT0