DC MOTOR CONTROL/BRUSHLESS MOTOR DRIVE
KEY APPLICATIONS
Fairchild products provide solutions for driving DC motors efficiently over a wide range load in full- and half-bridge
configurations. For higher currents, half-bridge gate drivers like the FAN7080 and FAN7190 can be used with discrete
MOSFETs and IGBTs to control motors operating from 12V to 600V DC . For 12V DC motors, operating in the ~30A range,
the FAN7093 provides full- and half-bridge control, with current sensing and diagnostic feedback common in load
sensing applications such as seat tracks, window lift, powered lift gate, cooling fan and reversing wipers.
Design Advantages Include:
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High efficiency over wide PWM range
Solutions for all load ranges in ICE, HV and EV vehicle applications
Up to 50kHz operation typically capable
V DC
V CC
V DD
V B
HO
T1
V DD
V B
HO
T3
V A
PHA
PHB
SD
DC Motor
Controller
IN
FAN7080
DT/SD LO
GND
T2
V A
IN
FAN7080
DT/SD LO
GND
T4
Forward
M
Reverse
Discrete HVIC Based Full-Bridge
Smart Power P/N Based Full-Bridge
Brushless Motor Drive
Three-phase motor control, both from low voltage and HV supply are used for driving variable speed powered systems.
Design Advantages Include:
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HVIC gate drivers combine to drive each half-bridge providing bootstrap gate drive
Planar MOSFETs available for HV application robustness
L1
C1
C2
Driver 1
T1
Driver 3
T2
Driver 5
T3
Bus Interface
VR1
Driver 2
T4
Driver 4
T5
Driver 6
T6
M
M1
Sensor Signals
Microcontroller
Driver Signals
HPH
Sensor
Three-Phase Motor Control
f a i rc hi l d s e mi.c o m
5
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