Toshiba Releases Gate Driver IC for Automotive Brushed DC Motors that Will Contribute to ..........
Toshiba Electronic Devices &
Storage Corporation ("Toshiba") has
started mass production of "TB9103FTG," a gate driver IC[1] for automotive brushed DC motors, including the
latch motors[2] and lock motors[3] of power backdoors and power slide doors,
and the drive motors of power windows and power seats.
Formerly manually adjusted parts of automobiles are now largely
electrified, which has increased both the demand for electric motors and the
number integrated into vehicles. The number of drivers used in motors has also
increased, prompting moves to downsize and integrate overall systems. There are
also some motor applications that do not require rotational speed control, and
drivers with simple functions and performance are required for these
applications.
TB9103FTG offers streamlined gate driver functions and
performance for brushed DC motors that do not require speed-control, opening
the way to more compact design. It has a built-in charge pump circuit[4] that
ensures voltage needed to power external MOSFETs for driving motors. It also
has a gate monitoring function that prevents the generation of through-current
by automatic control of the output timing of the gate signal to the high-side
and low-side external MOSFETs. In addition, it has a sleep function, achieving
low power consumption during standby.
The new IC can also be used as one-channel H-bridge or
two-channel half-bridges. In addition to application as a motor driver, it can
be combined with an external MOSFET to replace mechanical relays and other
mechanical switches, contributing to quieter operation and higher equipment
reliability.
TB9103FTG is housed in a 4.0×4.0mm (typ.) VQFN24 package, and
contributes to equipment downsizing.
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