drive circuit. TDF5242T Datasheet

TDF5242T circuit. Datasheet pdf. Equivalent

Part TDF5242T
Description Brushless DC motor drive circuit
Feature INTEGRATED CIRCUITS DATA SHEET TDF5242T Brushless DC motor drive circuit Preliminary specification .
Manufacture NXP
Datasheet
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INTEGRATED CIRCUITS DATA SHEET TDF5242T Brushless DC motor TDF5242T Datasheet
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TDF5242T
INTEGRATED CIRCUITS
DATA SHEET
TDF5242T
Brushless DC motor drive circuit
Preliminary specification
Supersedes data of 1997 Apr 23
File under Integrated Circuits, IC11
1997 Sep 12



TDF5242T
Philips Semiconductors
Brushless DC motor drive circuit
Preliminary specification
TDF5242T
FEATURES
Full-wave commutation without position sensors
Built-in start-up circuitry
Six outputs that can drive three external transistor pairs:
– output current 0.2 A (typ.)
– low saturation voltage
– built-in current limiter
Thermal protection
Tacho output without extra sensor
Transconductance amplifier for an external control
transistor
Brake control input
Direction control input.
APPLICATIONS
High-power applications, for instance:
– high-end hard disk drives
– automotive applications.
GENERAL DESCRIPTION
The TDF5242T is a bipolar integrated circuit for driving
3-phase brushless DC motors in full-wave mode.
The device functions sensorless, thus saving 3 hall-effect
sensors, using the back-EMF (Electro Motive Force)
sensing technique to sense the rotor position. It includes
6 pre-drivers able to control external FETs (Field Effect
Transistors) or bipolar transistors. It offers brake and
direction control. It is ideally suited for high-power
applications such as high-end hard disk drives and
automotive applications.
QUICK REFERENCE DATA
Measured over full voltage and temperature range.
SYMBOL
VP
VVMOT
VO
PARAMETER
supply voltage
input voltage to the output
driver stages
driver output voltage
ILIM current limiting
CONDITIONS
note 1
IO = 100 mA; lower transistor
IO = 100 mA; upper transistor
VVMOT = 14.5 V; RO = 47
Note
1. An unstabilized supply can be used.
MIN.
4
3
TYP.
MAX.
18
18
UNIT
V
V
−−
1.05
150 200
0.35 V
V
250 mA
ORDERING INFORMATION
TYPE
NUMBER
TDF5242T
NUMBER
SO28
PACKAGE
DESCRIPTION
plastic small outline package; 28 leads; body width 7.5 mm
VERSION
SOT136-1
1997 Sep 12
2





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