Toshiba adds five miniature MOSFET gate driver ICs for portable applications
Five MOSFET gate driver ICs have been added to the TCK42xG series by Toshiba. They are suitable for a wide range of applications including battery powered, consumer and industrial equipment.
The ICs control the applied gate voltage independent of the input voltage and feature an over-voltage lockout function to protect the circuit.
The latest gate driver ICs can be selected for a gate-source voltage of 10V or 5.6V, for use with a variety of MOSFETs. There is also a choice of detection voltages for the input over-voltage lockout which allows them to operate from power lines from 5.0V to 24V.
The TCK420G is for 24V power lines, the TCK422G and TCK423G are for 12V power line, the TCK424G is for 9V and the TCK425G is for 5V power lines.
Each driver in the series features a built-in charge pump that ensures a stable gate-source voltage at the external MOSFET while the input can vary from 2.7V to 28V. This allows large currents to be switched. When used to control two N-channel MOSFETs connected back-to-back, the gate driver ICs are suitable for configuring load switch or power-multiplexer circuits with reverse current blocking.
The TCK42xG gate drivers are house in a 1.2 x 0.8mm WCSP8G package for a small footprint that allows high-density mounting in portable products. They also have a low input off current, IQ (off), of 0.5 microA (maximum, at Vin of 5.0V) that helps to prolong battery runtime.
Toshiba has also developed the Power Multiplexer Circuit reference design, which provides a design example for power multiplexers that use the functions of TCK42xG ICs.
